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Masaya Tamaru
2006 Volume 69 Issue Suppliment Pages
2-3
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The image processing technology has played an important part in the history of digital still cameras. The technology which is used in cameras has realized wider dinamic range, lower noise, etc. That has provided camera users with the benefit of higher picture-quality and more successful shooting. Also in the phase of camera design, the image processing technology which simulates undeveloped cameras has indicated the expected picture-quality and has contributed to decision of camera specifications. This report introduces these image processing technology which realizes the present high picture-quality of digital still cameras.
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Naotaka Obara, Shoji Yamamoto, Maiko Tsuruse, Norimichi Tsumura, Toshi ...
2006 Volume 69 Issue Suppliment Pages
4-5
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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An appearance-based display system has been developed to reproduce the accurate gloss appearance of real object. For the reproduction of the gloss appearance, BTF (Bi-directional Texture Function) rendering is thought to be used in this system. However, efficient compression and reproduction methods are required for real-time rendering. In this paper, we propose an efficient approach of BTF compression based on dichromatic reflection model. The proposed method separates the reflected light to the specular, the cast shadow and the invariant diffuse elements. By applying the LPCA (Local Principal Component Analysis) to the specular and the cast shadow images, the proposed method performs accurate reproduction by fewer principal components in comparison with the conventional method. As the result of demonstration on the appearance-based display, BTF rendering with proposed method was two times faster than the conventional method.
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Keiichi Ochiai, Takahiro Takiguchi, Norimichi Tsumura, Toshiya Nakaguc ...
2006 Volume 69 Issue Suppliment Pages
6-7
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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In this research, we propose an alignment method for three-dimensional shape and texture using pattern projection. Pattern projected object is captured by low resolution 3D scanner and high resolution digital camera, and both images are aligned based on the projected pattern. An appearance of the object is accurately reproduced by applying this alignment to the normal map and the gloss map.
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Ryusuke Honma, Koichi Takase, Daisuke Kawazoe, Norimichi Tsumura, Tosh ...
2006 Volume 69 Issue Suppliment Pages
8-9
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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In conventional methods for measuring bidirectional reflectance distribution function (BRDF), exposure time is determined empirically. If photographs are taken with incorrect exposure time, we can't estimate BRDF accurately due to the saturation of charged coupled devices (CCD) or the influence of noise. In this paper, we present a method for determining suitable exposure time dynamically from previous taken photographs even if the position of a light source is moved. The accuracy of the proposed method is evaluated to measure diffuse reflectance of a real object.
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Hiroshi KOUNO, Hideaki HANEISHI, Masaru TSUCHIDA
2006 Volume 69 Issue Suppliment Pages
10-11
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Many of old Asian paintings have been drawn with natural mineral pigments. The digital archive of those paintings, the identification of pigments used in the paintings and the retrieval of color fading are strongly desired. The multispectral image acquisition of those paintings allows the digital archive of accurate color information of objects. Moreover, it has potential of identification of used pigments and leads to the possibility of the retrieval of color fading. This pa1per describes our first trial of statistical analysis of the reflectance spectra of natural mineral pigments, image acquisition of those paintings by a multispectral camera and the construction of the GUI based segmentation tool for the aid of analysis of paintings
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Tatsuo Mishima, Hideaki Haneishi, Takeyuki Ajito, Takeshi Yamazaki
2006 Volume 69 Issue Suppliment Pages
12-13
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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A technique for acquisition and synthesis of pictures with high resolution and wide angle is presented for projection onto dome screen. A camera calibration technique for the multiple camera system is proposed for preserving right direction from the viewing point to the object. A preliminary experiment with a digital camera was performed and images were synthesized within three degrees as error in direction and within three pixels as error in stitching processing.
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Shinichi Yasukawa, Hideaki Haneishi, Takeyuki Ajito, Takeshi Yamazaki
2006 Volume 69 Issue Suppliment Pages
14-15
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Seamless stitching of image projected from multiple projectors onto a spherical screen allows very high-resolution image display and brings observers a highly realistic feeling. An optimum arrangement of such projectors is desired from the cost-performance point of view. As a preliminary experiment for such consideration, the relationship between the viewing angle and the ratio that an observer's gazing point is within the viewing angle was investigated and the subjective evaluation with images in which the resolution was reduced in the peripheral region was performed.
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T. Fujii, M. Iwasaki
2006 Volume 69 Issue Suppliment Pages
16-17
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Historical paintings on paper sliding-doors are in poor conditions for conservation, because they are parts of buildings. It is very important in several aspects to conserve the cultural properties. Because of deterioration, cyclic recording of such historical paintings should be performed. And the exhibition of their digital data for education and studying are desired very much. When the recording of historical paintings is performed, the objective recording is needed, and the scanner for cultural properties has several advantages for the purpose. In this paper, the abilities of scanner for cultural properties have been discussed in comparison with conventional cameras.
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Haruki Kamiyama
2006 Volume 69 Issue Suppliment Pages
18-19
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The biggest problem of digital camera to capture very faint image is the heat noise generated from the exposure device itself. When you take images of celestial objects, this heat noise makes bad S/N rate. If you remove it, you can improve the S/N ratio of the image greatly. To realize it, you need to process the raw data captured by digital camera directly. This article describes the way of image processing and the result.
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Yasuteru Yamano
2006 Volume 69 Issue Suppliment Pages
20-21
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Slideshow which contains BGM is a new way of presentation. Sophisticated slideshow wove us like photograph exhibition. The points of making it are music selection, order of slides, interval time and transition effects.
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Focusing on the Latest B & W Prints
Yoshihiro Matsuda, Norihide Takahashi, Masato Hara
2006 Volume 69 Issue Suppliment Pages
22-23
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The latest digital ink-jet prints have achieved excellent image quality, not only of color photographs, but also monochrome images, of which many photographers still think as important media for fine art and creative photography. In this presentation, discussed is the image stability of those digital ink-jet B & W prints. To evaluate the stabilities, used for accelerated aging are xenon and fluorescent light test, thermal chamber test and ozone exposure test. Through those aging test, the latest ink-jet prints are evaluated as having exceedingly improved image stability.
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TATUYA HIRABAYASHI, HIDEKI SUGIMOTO
2006 Volume 69 Issue Suppliment Pages
24-25
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Color images recorded on photographic films are inherently vulnerable to aging regardless of their highly cultural or historic values. Their colors inescapably fade away in storage. A totally analogue method utilizing the masking technique of tri-color separation is developed and proposed here in below to perfectly restore faded original color film images.
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Daisuke Yokoyama, Yasushi Araki, Tetsuro Mitsui, Masayuki Hayashi, Shu ...
2006 Volume 69 Issue Suppliment Pages
26-27
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The research on the application of organic semiconductors to the use for electronic devices has become of much interest since the success of organic photoconductive (OPC) materials. In this study, we tried to apply an organic semiconductor having narrow absorption band to the use for a solid-state sensor device and examined the capabilities of the image capturing. The thin layer of quinacridone with a sharp absorption band in green region was stacked on CMOS read-out circuit as the photoelectric conversion layer, and we succeeded for the first time in the world in capturing still and moving images by the solid-state image sensor with an organic semiconductor.
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Akihiro Kojima, Kenjiro Teshima, Ryouhei Yaegashi, Tsutomu Miyasaka, Y ...
2006 Volume 69 Issue Suppliment Pages
28-29
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Lead-halide perovskite compounds are known to construct self-organized semiconductor crystal structure. In this study, we attempt to form the self-organized perovskite type crystal structure in mesoporous TiO
2 electrode and discuss about the compounds as the sensitizer of photovoltaic solar cell. As a result, the cell showed photovoltaic performance by visible light irradiation.
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Mitsuo Kawasaki, Shuki Mine
2006 Volume 69 Issue Suppliment Pages
30-31
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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When a relatively thick (-10μm or more) polymer film doped with laser dyes was coated on a thick Ag island film (TAIF) cosisting of large psedudotabular nanoparticles and pumped by a nanosecond laser pulse, the extremely enhanced radiative rate (much faster emission) achieved very near the metal surface triggered an avalanch of stimulated emission from the dye-doped polymer film, producing a single sharp laser-like emision with bandwidth as small as 2.5nm. This does not need any special feeback mechanism, not to mention an external cavity. The fact that this novel lasing action was induced by the surface-enhanced fluoresence was verified by the fact that the separation of TAIF and the dye-doped polymer film by a molecularly thin spacer only -10 Å thick was sufficient to suprress the lasing action.
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Hiroaki Iino, Jun-ichi Hanna
2006 Volume 69 Issue Suppliment Pages
32-33
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We have investigated crystallographic features and charge carrier transport properties in the polycrystals fabricated by phase transition from oriented liquid crystalline phases of triphenylene and terthiophene derivatives, which are representative materials of discotic (disk-like) and calamitic (rod-like) liquid crystals. It was found that the liquid crystalline molecules aligned in a particular orientation where the grain boundaries exhibited no devastating effect on charge carrier transport in the resulting polycrystalline thin films. The present results indicate that the liquid crystalline material is a good candidate for organic polycrystalline semiconductor thin films.
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Tohru Toda, Jun-ichi Hanna, Tadaaki Tani
2006 Volume 69 Issue Suppliment Pages
34-35
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The current voltage characteristics of a liquid-crystalline semiconductor 2-(4'-Octyphenyl)-6-dodecyloxynaphthalene (8-PNP-012) with various electrodes was measured and analyzed to study the positive hole injection from the electrodes to 8-PNP-012. It was found that the positive hole injection was depressed by the dipoles formed at the interfaces between electrodes and 8-PNP-O12 when they were in contact with each other. The modification of the surface of an Au electrode with a dipolar self-assembled monolayer (4-nitrophenylthiolate) could significantly enhance the positive hole injection.
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Kenjiro Teshima, Jun Suzuki, Takurou N. Murakami, Tsutomu Miyasaka
2006 Volume 69 Issue Suppliment Pages
36-37
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Energy output by the solar-electric energy conversion which achieved by the dye sensitized solar cells (DSC) is greatly influenced by luminance depending on weather, time, and so on. Photocapacitor which combined DSC and electric double layer capacitor (EDLC) is the novel device having photoelectric generation and electric charge-discharge abilities, and it expected to improve the problems about steady electric power supplements by the solar energy conversion. We have first constructed a high-voltage photocapacitor of three-electrode configuration. As the three-electrode system has advantage to improve the storage and electric generation layer, respectively, we try to improve photocharging-discharging properties from both construction method of carbon layer and optimization of electrolyte solutions. The improvements of inner resistance and capacitance make the output electric power five times larger, and the methods were applied for construction of the modules with large size three-electrode system.
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S. Miura, M. Nishimura, N. Kobayashi
2006 Volume 69 Issue Suppliment Pages
38-39
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We studied organic electrochromic materials, which showed vivid color change to cyan, magenta or yellow upon electrochemical stimulation, from a view point of a new class of color electronic paper. Coloring and bleaching could be repeated without any decay over 500 cycles. Further, flexible electrochromic cell with gel polymer electrolyte has also been demonstrated.
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Kohei TANIGUCHI, Ken'ichi KOSEKI
2006 Volume 69 Issue Suppliment Pages
40-41
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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OCB (Optically Compensated Bend) mode is the most promising LCD mode, because of its fast response and wide viewing angle. But OCB requires transition from splay alignment to bend alignment, and that takes long time. So, the method, that stabilizing bend alignment by polymer walls is proposed. In this study, polymer walls were formed by photopolymerization of acrylate monomer and the transition behavior was observed with the aid of microscope. In the cell with polymer walls, transition from splay alignment to bend alignment was not able to observe. But the cell with polymer walls was keeping fast response time peculiar to OCB mode. Therefore, an initial state was found to be bend alignment state was maintained bend alignment state from an initial state.
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Yu Kimura, Katsumi Yamada, Junji Sone, Jun Chen, Shigeharu Urabe
2006 Volume 69 Issue Suppliment Pages
42-43
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The photo-polymerization of pyrrole and its pattern formations using tris (2, 2'-bipyridyl) ruthenium complex were realized by multiphoton absorption process. Polypyrrole deposition on to the substrate was improved by using the polymer layer as the binder. The resulting line patterns were very fine exceeding the diffraction limit of the optical system.
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Ryuji Shiraishi, Koji Seya, Katsumi Yamada, Shigeharu Urabe
2006 Volume 69 Issue Suppliment Pages
44-45
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We have a great interest in the application of nano-brush film as the working electrode for electrochromic device. To improve the response and the life cycle of the electrochromic device, polythiophenes films were prepared on Au nano-brush electrode by template synthesis. And, their electrochemical characteristics were compared with polythiophenes film electropolymerized on Au planar electrode.
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[in Japanese], [in Japanese], [in Japanese]
2006 Volume 69 Issue Suppliment Pages
46-47
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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High reliability is essential for the industrial inkjet inks for textile printing.Much amount of dyestuff is incorporated and it makes more difficult to stabilize ink properties than inks for home-printing. We studied about factors for the reliability, particularly for the firing reliability. The results are reported in this paper.
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Hiroshi Yamamoto, [in Japanese]
2006 Volume 69 Issue Suppliment Pages
48-49
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Inkjet Photo Glossy Paper with resin coated paper is now main medium for photographic inkjet printing because of its whiteness and smooth surface, which resembles to conventional AgX photo print. We developed Premium Photographic Inkjet Printing Paper which has unprecedentedly high glossiness, high Dmax (wide color gamut) and excellent stiffness.
In this report, we describe the techniques that we developed for its high glossiness and high Dmax (wide color gamut).
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Hajime Kusano, Eitarou Hikasa, Hirofumi Mitekura, Toshio Kawata, Fumio ...
2006 Volume 69 Issue Suppliment Pages
50-51
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The improved method for a development which is free from any harmful liquid waste was developed fromthe usual “Wet-Process.”
“Developer Stamps” were prepared from the mixture of gelatin and carrageenan by casting it on the sheet of polyethylene terephthalate. The stamps kept the chemicals and the moisture after they were dipped in the solutions of developer chemicals.
An exposed printing paper was contacted with “Color Developer Stamp”, then they were heated at 40°C to supply the developer into the paper and promote the development. After heating for 20 seconds, they were peeled apart. In the same way, the paper was continuously treated with “Bleach-Fixer Stamp” and “Cleaner Stamp” in order. As the development was carried out within the paper and the stamp, no liquid waste was discharged.
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Eitarou Hikasa, Masataka Katakami, Tatsuo Nomura, Hirofumi Mitekura, T ...
2006 Volume 69 Issue Suppliment Pages
52-53
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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In order to improve the protective colloidal property of pullulan, we synthesized a pullulan derivative (PDS) having both cationic moiety and anionic moiety. The effect of the protective colloid was evaluated by gold number, and it was found that this number of PDS was almost same as that of gelatin. Furthermore, photographic emulsions were prepared with PDS instead of gelatin. The resulting silver halide crystals were observed by SEM and were compared with those of the emulsion made of gelatin.
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Y. Okawa, S. Kikuchi, F. Shiba
2006 Volume 69 Issue Suppliment Pages
54-55
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The rheological properties of a gelatin solution vary remarkably by addition of carrageenans. In the present paper, we examined the gel structure of gelatin-κ-carrageenan blends through temperature-controlled rheometry during gelation. The temperature program during cooling strongly affected the elasticity of the matured gel of the blend. It is found that the temperature program that accelerates microscopic phase-separation of gelatin and carrageenan increases the gel elasticity after maturation.
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Masao OKI, Ken'ichi KUGE, Takaaki KOBAYASHI, Tomoko SAKAI, Akira HASEG ...
2006 Volume 69 Issue Suppliment Pages
56-57
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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It got image holograms composed of a thin gold layer using the silver halide photosensitive materials. The image hologram reproduced from the master hologram with an Ar laser beam was reproduced on the photographic glass plate and self-made plate that an ultra fine-grain photographic emulsionwascoated on a china dish. The gold deposition development made those to the image hologram composed of gold particles, and the baking treatment made the image by the grating with thin gold layer. This hologram is a surface relief type, and has a gold luster with the reflected light. Because the image hologram of gold layer consists of the diffraction gratings with a thin gold layer on a glass or ceramic base, this image should be chemically stable.
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T. Yamawaki, M. Yamamoto, N. Aoki, H. Koabayashi
2006 Volume 69 Issue Suppliment Pages
58-59
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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In research concerning memory color of flesh color, it is almost always necessary to obtain a representative value of flesh color of face, for instance, which has area. The mean value of some parts of cheek and forehead or that of the entire face has been mainly used so far. The present study is aiming to suggest a method to determine a representative value based on impression we get from the flesh color. Through a color matching in which the flesh color of an image of the sample possessing flesh color consist of only one hue angle was matched to that of the sample by changing hue angle, parts determining the hue angle were obtained with results that the determining part differs from one sample to another and that hue angle of the part was lower (more reddish) than that of the mean value of whole face.
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S. Hanyuda, N. Aoki, H. Kobayashi
2006 Volume 69 Issue Suppliment Pages
60-61
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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A noise evaluation method for DSC taking appearance of prints into consideration was proposed. Ahigh peek was observed in low frequency region of power spectrum of print. Its power was differentin three primary colors. This results in a appearance of remarkable colored noise pattern. Theproposed method was to revise the noise level obtained from ISO15739 by correction coefficientswhich were determined from the power and VTF for three spatial frequencies (0.18, 0.36, 0.72 cycle/mm).
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T. Ogihawa, H. Kitagawa, N. Aoki, H. Koabayashi
2006 Volume 69 Issue Suppliment Pages
62-63
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The image structures of silver image of black and white films and dye image of color films wereobserved by a microscope, and their type of noise was analyzed. Silver image was close to whitenoise, while dye image to 1/f
α noise. By selecting
α adding 1/f
α noise to some type of color print results in improvement of impression of space and texture.
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Kentaro Ishii, Naokazu Aoki, Hiroyuki Kobayahshi
2006 Volume 69 Issue Suppliment Pages
64-65
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Panel were asked to color photograph, illustration, and cartoon, shown on a LCD display, and thedifference between flesh color fitting real image and that fitting non-real image was investigated.For all used sample images of each two women and men real image photograph was colored withflesh color of the lowest lightness and cartoon was colored with the lightest flesh color.
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Hirokatsu Shimizu, Naokazu Aoki, Hiroyuki Kobayahshi
2006 Volume 69 Issue Suppliment Pages
66-67
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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This work aims to improve impression of space and texture by applying stroke textures of paintings to photographs. The spacefrequency element of the original image was matched to that of the brush stroke texture, while the phase information maintainsthe original one. Brush stroke was added along the edge of the image (outline). In the part without the outline, a verticaldirection to the inclination of the gradation was selected. In the result of the subjective evaluation of the made images, thetexture with a large stroke was preferred for the low frequency image like the portrait etc. and also for the high frequency image such as the flower garden and buddhist temples.
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T. Yamaguchi, K. Kawamata, F. Shiba, Y. Okawa
2006 Volume 69 Issue Suppliment Pages
68-69
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Use and sales of methyl bromide, which was used for cultural properties protection, have been prohibited since 2005 because the methyl bromide was specified as the destructive material of the ozone layer. In this paper, the influence ofthe fumigation on several types of photographic images and their long-term stability was examined using the alternativefumigants (propylene oxide, ethylene oxide, methyl iodide, and sulfuryl fiuoride) as well as carbon dioxide andprohibited methyl bromide. We applied accelerated ageing experiments to the fumigated samples to estimate thestability in the long-term preservation. Methyl iodide and bromide were found to react to colloidal silver, though noeffect on silver images was observed. We observed no influence on photographic images in the other treatments.
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Kenta Yamada, Toyohide Tanaka, Norihisa Kobayashi
2006 Volume 69 Issue Suppliment Pages
70-71
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The under coated layer (UCL) in xerographic photoconductor has various functions so as to prevent charge injection from Al substrate to charge generation layer (CGL) and to remove charge accumulation on the CGL. Metal oxide particles are commonly used as UCL, but its properties are not enough. It is known that certain dyes are added to improve the properties of UCL. In this paper, the electric properties of ZnO based film was studied from a view point of UCL. An effect of dye added in the film was also discussed.
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Hideaki KUBOTA, Mizuki KATAGIRI
2006 Volume 69 Issue Suppliment Pages
72-73
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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For image denoising by wavelet transforms, it is very important how we decide the threshold. The “universal threshold” proposed by Donoho gives the optimal threshold theoretically, but the information of noise power on the image is needed. In this study, we used the information of the histogram shape of wavelet coefficients to choose optimal threshold. We selected a medical chest x-ray image of various signal-to-noise ratios for wavelet denoising. We found that our method was effective when there were many noises on the image.
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Hideaki Haneishi, Yoshimi Onishi, Hideki Hayashi
2006 Volume 69 Issue Suppliment Pages
74-75
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We have developed a method that combines a small semiconductor gamma camera with an optical camera to synthesize the two kinds of images and help surgeons to easily identify sentinel lymph nodes on the gastric surface in the cancer resection surgery. The proposed method includes some key techniques such as distortion correction of the optical camera image, distance estimation between the camera head and the object surface using a laser and the optical camera, and perspective transformation of the gamma camera image to fuse with the optical camera image. The method and preliminary experimental results with a prototype setup are presented.
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Usefulness of partial body fusion
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2006 Volume 69 Issue Suppliment Pages
76-77
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Purpose: In this study, we created a whole-body fusion image of PET and MRI using automated software for fusion imaging, and assessed the accuracy of the software. Materials and methods: Forty patients with abnormal FDG PET findings underwent whole body MRI. Images from both modalities were automatically fused using software with a registration algorithm based on maximum mutual information in two ways. One was to create whole body fusion image at once and named whole body fusion (WBF). The other was to create fusion image of head and body separately, named partial body fuion (PBF). Two radiologists measured the misregistration between PET and MRI in the fusion images at nine landmarks. Results: When fusion images were created using WBF at once, in approximately half of the cases, misregistration was observed in the head and neck area, while almost no misregistration was observed in the body. When fusion images were created using PBF, the misregsration in head and neck areas was statistically smaller than those using WBF and the misregistration in body was very small.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2006 Volume 69 Issue Suppliment Pages
78-79
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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For a long time, endoscopic diagnosis are performed for various diseases without changing color settings. However, since for example the color feature of early stage cancers is too small to detect, it is very significant to enhance endoscopic images by using the customized parameters of the color collection. In this research, we propose a new color collection method considering the index value of Hemoglobin density, and develop a new user-interface for the medical doctors, which makes the decision of the optimum values of multiple parameters quite easy. By deciding the adequate parameters for various cases of early stage cancers, the effectiveness of the color collection method can be confirmed.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
2006 Volume 69 Issue Suppliment Pages
80-81
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Recent improvement of multislice computed tomography (CT), electrocardiogram (ECG) gating, and dedicated cardiac reconstruction algorithms allow us obtain excellent cardiac imaging. The esophagus is located next to pulsating heart or aorta, high-resolution and motion-free images of esophageal cancer and adjacent structures can be obtained using this technique. Staging of cancer is important not only in the treatment decision but also prediction of prognosis. The reconstruction methods are slightly different among manufacturers, we used a CT scanner made by GE Medical. Using this technique, much better information in the staging of esophageal cancer was obtained. The spatial resolution of ECG-gated CT examination and that of routine CT examination will be discussed, too.
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S. Kasai, T. Yanagita, K. Nakano, S. Honda
2006 Volume 69 Issue Suppliment Pages
82-83
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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CR (Computed Radiography) plate of a vapor deposition type using CsBr phosphor has been developed.
A 17-inch size CR plate was formed by newly employing CsBr as a photostimulable phosphor, which was uniformly deposited on a heat-resistant substrate via a vapor deposition method, and by further providing a protective layer on its surface.
The CsBr phosphor plate showed excellent characteristics of X-ray absorption, image sharpness and image granularity, compared with the coated plate, since the CsBr phosphor plate was formed as a pillar structure.
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Tadashi Kamada
2006 Volume 69 Issue Suppliment Pages
84
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The Heavy Ion Medical Accelerator in Chiba (HIMAC) is the world's first heavy ion accelerator complex dedicated to medical use in a hospital environment. In June 1994, clinical research for treatment of cancer was begun using carbon ion beam generated by HIMAC. Clinical trials revealed that carbon ion radiotherapy provided definite local control and offered a survival advantage without unacceptable morbidity in a variety of tumors that were hard to cure with other modality.
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Yasuhiro Yoshioka, Tomoyuki Ohzeki, Katsutoshi Yamane, Hirohiko Tsuzuk ...
2006 Volume 69 Issue Suppliment Pages
86-87
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Using the aqueous latex polymer as the binder, we succeeded to make dry-imaging film coated with aqueous dispersion. This film is much more environment-friendly product, because it does not use any processing liquids for printing, but also plenty of organic solvents in the manufacturing process. Further, we introduce many technologies into the film using the unique aspect of aqueous coating, for example ultra fine grain silver halide, high-speed developer, development accelerator, tone controller and image stabilizer.
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Fumiyuki SHIBA, Yusuke OKAWA
2006 Volume 69 Issue Suppliment Pages
88-89
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Growth rate measurements, based on a theoretical relationship between supersaturation ratio and molar supply rate of reactants, were applied to three gelatins with different physical retardance values (PRY) to evaluate their effect on growth kinetics of AgCl particles. Although, the growth rate analysis suggests influences on both diffusion and surface-reaction processes, the overall growth rate was concordant with the PRV determined by the PAGI method.
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K. Ryuto, F. Shiba, Y. Okawa
2006 Volume 69 Issue Suppliment Pages
90-91
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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It is known that the image quality of dichromated gelatin (DCG) phase hologram strongly depends on pre-hardening of the gelatin layer. In order to evaluate the relationship between pre-hardening and the holographic quality and to analyze its mechanism, eluted amount of gelatin from a DCG layer under developing conditions was determined and effect of exposure to the elution was examined. Taking into account the results of Cr (III) analysis in the previous study, the effect of the pre-hardening to the diffraction efficiency was discussed.
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Fumitaka Ueda, Masatoshi Goto, Sigeru Kuwashima, Nobuyuki Haraguti, Ki ...
2006 Volume 69 Issue Suppliment Pages
92-93
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Fujichrome PROVIA 400X, which was released in February 2006 by Fuji Photo Film Co., Ltd. is the highest in imagestructural qualities and color saturation as well as long-term image stability among ISO 400 color reversal films. These new features have been realized by the following state-of-the-art innovative technologies; Epitaxial Sigma Crystal technology, Pure, Stable & High-performance dye-forming Coupler technology, and Multi-Color-Correction Layer technology.
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Hirotaka KUBOTA, Kimio NIWA, Toshiyuki TOSHITO, Mitsunori NATSUME, Nak ...
2006 Volume 69 Issue Suppliment Pages
94-95
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We research C-H
2O nuclear fragment interaction to obtain the basic data for the cancer treatment with heavy particle beam. A purpose of this study is to identify the particles formed on the nuclear fragment interaction using the OPERA film and gold deposition development. Because the gold deposition development decreased the Grain density (GD), Li, Be, B, C track revealed a difference of GD. The GD correlated to the ionization loss (dE/dx) which data was useful for the particle identification. Therefore, we concluded that this technique is very useful for particle identification.
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Kazuhisa Kobayashi, Yasuo Tsubai
2006 Volume 69 Issue Suppliment Pages
96-97
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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We have developed the process for producing electroconductive silver patterns utilizing silver halide diffusion transfer method. Since silver layer constructing these patterns contains very little binder, specific resistance of the layer is in the range of 10
-5 ohm cm, not far from that of bulk silver, without any annealing process. With the help of ultra fine grain silver halide, resolution of the material is high enough to obtain Line/Space=25/25μm pattern. The patterns are expected to be useful for wide range of applications.
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Tadaaki Tani
2006 Volume 69 Issue Suppliment Pages
98-99
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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The measurement of the electronic energy level of the top of the valence band (Evs) by UPS was applied to AgCl, AgBr, and AgI layers covered by thin gelatin membranes containing silver ions with varied concentration, and has revealed that Evs is in the order of AgCl<AgBr≤AgI, and decreases in height with increasing the concentration of silver ions. The obtained result provides a basic aspect for the effect of silver ion concentration on photographic and photoelectric effects of silver halides.
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Kimiyasu Morimura, Tadaaki Tani, Hiroyuki Mifune
2006 Volume 69 Issue Suppliment Pages
100-101
Published: June 02, 2006
Released on J-STAGE: February 17, 2011
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Studying sulfur, selenium and tellurium sensitization centers formed on AgBr emulsion grains, we obtained the results that the order of the electron trap depth was S<Se<Te, and that the efficiency for photoelectrons to form latent image centers increased with decreasing the trap depth, especially in the presence of such competing deep electron traps as desensitizing dyes and Rh
3+ on the grains. It has been revealed that the efficiency of the growth of image centers is much larger in the tellurium-sensitized AgBr emulsion than in sulfur-sensitized and selenium-sensitized emulsions.
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