ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
34.10
Displaying 1-41 of 41 articles from this issue
  • Article type: Cover
    Pages Cover1-
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Article type: Index
    Pages Toc1-
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Masaya SUZUKI, Jun-ichi IMAI, Masahide KANEKO
    Article type: Article
    Session ID: ME2010-49
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Mobile robots in living spaces for humans are required to recognize their surroundings well to avoid collisions with pedestrians. In this paper, we propose an autonomous robot which can move safely in such dynamic environments. The proposed robot can recognize surrounding pedestrians' and its own positions in the environment using distance information obtained by a laser range finder. Furthermore, positions of the pedestrians at the next time step are predicted by Kalman filter. Then, routing decision is made by using the potential field method whose repulsion field is decided with consideration for velocities of the pedestrians. Experimental results show that the proposed robot can move to its destination without a collision with pedestrians.
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  • Yuki ODAKA, Kento HIRANO, Yusuke IN, Mayuko KITAZUME, Masakazu HIGUCHI ...
    Article type: Article
    Session ID: ME2010-50
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In recent years, study of location identification by mobile phone has been attracting a lot of attention. Especially, contents of mobile phone GPS are increasing for the purpose of various kinds of applications, such as games. navigations and etc. So far, many researchers measured GPS performance by conventional GPS devices, but a few people study mobile phone GPS. In this paper, we measured mobile phone GPS using various types of terminals at some circumstance and at the same time. As for the tests, we investigated and evaluated about the test results including distance errors and direction errors. The reduction methods for such errors are also described.
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  • Keisuke SOEDA, Yasuyuki SAITO
    Article type: Article
    Session ID: ME2010-51
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Musical equipment is going in software age by computer's performance advanced and has several advantages with that. Musical Instruments have a long history and many manufacturers keep making a product of practical use many times. On the other hand, electronic musical instrument has very quaint function such as the hardware having many inputs-outputs or ease of use. So, We developed a highly novel software-based MIDI interface which analyzes user's gesture to control electronic musical instruments flexibly in diverse ways.
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  • Yoshitaka IWANO, Araghy Ali PARCHAMY, Mie SATO, Masao KASUGA
    Article type: Article
    Session ID: ME2010-52
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In analysis of textured images using fractal dimension to evaluate the state of human skin, we applied the power spectrum method to estimate the fractal dimension of images of human skin surfaces. We extracted features from these skin images to classify the age and gender. But, due to the artifacts that are exist in the skin image; sometime calculate an accurate fractal dimension is impossible. This paper presents an efficient method to calculate accurate fractal dimensions by extracting only relevant information from a picture based on majority rule.
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  • Haruka NISHIYAMA, Yosuke MUKAI, Mie SATO, Hiroshi HASEGAWA, Masao KASU ...
    Article type: Article
    Session ID: ME2010-53
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, information communication technology is greatly developed. Also understanding the intention of information and appealing that intention for the media audience sensibility has been attracted attention. Especially, the information transfer by voice can expand the audience imagination. Therefore, in this study, we focused on, and conducted an investigation into the imagination expansion effect and characteristic analysis for elementary schoolchild by the evaluation experiment based on Kansei engineering.
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  • Tsubasa ONDA, Kazuki NISHI, Tsutomu ABE, Hiroyuki MURAI, Kouji NAGATA, ...
    Article type: Article
    Session ID: ME2010-54
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    We have developed o novel system for detecting trajectories of camera shake high precisely and evaluating image stabilizers quantitatively by analyzing the camera image of video test pattern. In this study, we propose a new evaluation method of correction performance based on detection results of camera shake trajectory in various shutter speeds and introduce o new developed vibration table for realizing artificial camera shakes. Some evaluation results of image stabilizers and vibration table are presented.
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  • Ryohei KAWAI, Atsushi YAMASHITA, Toru KANEKO
    Article type: Article
    Session ID: ME2010-55
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this paper, we propose a method for shape measurement of objects in water by pattern light projection with consideration of light refraction. Measurement of objects in water by photographic measurement methods has a problem of light refraction that causes image distortion. A ray tracing technique is used to solve the problem of light refraction. Object colors are estimated by considering light attenuation. Experimental results show the effectiveness of the proposed method.
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  • Hisashi HASEBE, Hiroki ASHIZAWA, Shoji YAMAMOTO
    Article type: Article
    Session ID: ME2010-56
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In this paper, we propose the simplified click operation based on gesture recognition and develop intuitive interface using it. Click operation is performed from detection of a fingertip position using an infrared image. Recognition of algorithm is used to change an angle and position of the fingertip. A Recognition results is reflected in a projected image which is calibrated between projector and camera. As the experimental results of drawing interface, our system is comfortable and intuitive in comparison with a conventional touch panel interface.
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  • Jin KOU, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-57
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, image projection onto non-flat surfaces with various angles is widely used in many kinds of applications, because of the diversification of projectors. In this case, geometrical correction is required for image generation processes, and it causes deterioration of image quality and rendering speed. Therefore, in this research, we propose a high-quality rendering technique for arbitrary shaped surfaces with optimized projection transformation, according to the shape of the target surfaces. In this approach, the optimized projection transformation is calculated with GPU, and it can achieve faster rendering speed than previous two-pass rendering method. And also, we indicate the performance of our proposed method with actual image projection for some non-flat surfaces.
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  • Ryohei TANAKA, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-58
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, wide and high-definition image projection is strongly required for making immersive environments in many kinds of application fields. Then, they tend to become huge and complex systems, and be only provided for limited users. Therefore, in this research, we propose an effective immersive projection technique with simple hardware, based on our visual characteristics. In our proposal, high-definition image projection tracing the central region of users' field-of-view with a controllable pan-tilt unit is combined with a wide view-angle and relatively low-resolution image projection covering the peripheral region of the view with simple projection systems. This architecture provides users a feeling of being surrounded with high-definition images.
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  • Misa SAWAI, Noriko NAGATA
    Article type: Article
    Session ID: ME2010-59
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently there has been an increasing interest in the impact of video content on the human body. Currently, the using television commercials directly before the climax of a program are becoming a cause for concern. The study was conducted on six children between the age of 4-5 years old and five physiological indicators including brain activity, heart rate, breathing, blinking and electrodermal activity. Analyzed data revealed to us that it is possible the commercials played during the climax of the program may result in a break of concentration and feelings of frustration. And, it is easier to relax and concentrate on the program if commercials were not played during the climax.
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  • Masayuki FUKUYASU, Katsuya KONDO
    Article type: Article
    Session ID: ME2010-60
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    It is necessary to avoid obstacles so that the indoor vehicle may safely reach the destination. A monocular camera is installed in an indoor vehicle, the feature points is obtained from a time series of images, and the self movement of a vehicle is estimated by eight point algorithm. Then, feature points inside both walls is detected as obstacles by reconstructing 3D scene of walls. It is shown that the wall can presume by the experiment.
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  • Akio WATANABE, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-61
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, the application fields of image projection are diversified with the appearance of portable projectors. In such case, image deterioration with projection onto arbitrary surfaces, not decided screen material, is caused with the difference of color and reflectance properties of the surfaces. Therefore, we propose a dynamic luminance correction method with a projector-camera system. This method requires no prior and complex measurements of target's color and reflectance properties, used in previous approaches. By using the projector-camera system, in our approach, projected luminance is immediately captured, and based on that, corrected pixel value for each pixel is calculated with some iterative estimation processes. This technique makes it possible to project images onto the surface which is suddenly moved or shaded with other objects having different reflectance property.
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  • Manami KONYA, Mie SATO, Tomoharu ISHIKAWA, Miyoshi AYAMA, Masao KASUGA ...
    Article type: Article
    Session ID: ME2010-62
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, virtual reality (VR) technique is universally used due to the development of the image technology. We can experience touring the remains and traveling to several places by using VR-based system. In that case, we think it is important that the viewers don't feel uncomfortable feeling when changing other scene. Therefore, we investigated about more natural and comfortable camera work by focusing on the camera work between the current viewpoint and the next target viewpoint.
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  • Taku OUCHI, Yoshiaki TSUNEDA, Hitoshi HORIUCHI, Mie SATO, Masao KASUGA ...
    Article type: Article
    Session ID: ME2010-63
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, there are some serious problem of shortage of assistants and increased assistant's burden due to rapid aging of the population resulting from the decline in the birthrate. Although the system that can recognize abnormal and dangerous condition for elderly is required. Additionally, it also can alert the condition of the elder to the assistants. In this paper, we developed the system that has the condition of the elder recognition capability by using images from camera. And it registers status of elder to the database and makes behavior pattern.
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  • Yumiko Susuki, Yutaka Nakano, Toshiyuki Yoshida
    Article type: Article
    Session ID: ME2010-64
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Some of documents, which have a fixed format and are updated periodically, are often modified very partially, producing very similar documents before and after the modification. This paper aims at an automatic comparison and detection for such modifications in a pair of similar and printed documents. Although the simplest way for identifying such a modification is an application of an OCR system, the recognition ratio of many of current OCR systems is around 97% and is too low to obtain sufficient precision in our comparison application. This paper therefore treats a pair of target documents as images, and proposes an image-based comparison technique by using an image matching and a detection of the longest common sequences. Experimental results given in this paper illustrate that the proposed technique requires several ten seconds for a comparison of a pair of A4 size documents with 1500 Japanese characters, and gives a precision rate of 94% with a recall rate of 100%.
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  • Keisuke MORITA, Jun-ichi IMAI, Masahide KANEKO
    Article type: Article
    Session ID: ME2010-65
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Accurate detection of facial feature points is crucial to analyze facial features and to synthesize caricatures by computer. There have been many works on the automatic detection of facial feature points. However the accurate detection methods which can be used in above-mentioned applications have not been developed yet. This paper proposes the method to improve accuracy in the detection of facial feature points using the statistical characteristics of their locations. Statistical characteristics are examined by using many face images. They are used both to check the misdetection of feature points and to locate them at the appropriate locations. Experimental results using 247 face images of males and females from various ages show that the proposed method improves the accuracy in detection of feature points for eyebrows, mouth and facial contour.
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  • Koji SOMA, Daishi WATABE, Hideyasu SAI, Katsuhiro SAKAI, Osamu NAKAMUR ...
    Article type: Article
    Session ID: ME2010-66
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A robust ear biometric system is introduced by using Gabor features enhanced through linear discriminant analysis and independent component analysis.
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  • Yusuke In, Atushi Takahashi, Takashi Oie, Kento Hirano, Masakazu Higuc ...
    Article type: Article
    Session ID: ME2010-67
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In viewing comics on a mobile phone, the screen may be inadequate in resolution and size. A comic then needs to be decomposed into frames and put them in order to be read properly, whereas it is known that an accurate decomposition is not easy. In this paper, we develop an accurate and fast decomposition system using contour tracing and evaluate it comparing with an existing commertial technology.
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  • Kazuhiro MAEDA, Yasuyuki SAITO
    Article type: Article
    Session ID: ME2010-68
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper presents a generation method of the music piece by using the characteristics of the color image. In the picture exhibition, a music is played around a displayed picture. If the impressions both the picture and the music are same. audiences receive strong impression. Using K-mean method. extract domain information from an image and generate the melody line on the domain information. A musical piece is generated by converting the average color of the domain on the melody line into notes. As a result, the musical piece which had the characteristics of the image is generated.
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  • Shiori SASAKI, Mie SATO, Masao KASUGA, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-69
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, watching with a projector has become more familiar than before, due to its miniaturization and price reduction, etc. To enjoy high quality movies and games, HDR (High Dynamic Range) display attracts much attention that can present a great dynamic range of luminances between the lightest and darkest areas of an image. In this study. we build a HDR display with four projectors based on overlay projection.
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  • Yoko TSUKAGOSHI, Mie SATO, Masao KASUGA, Kenji HONDA, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-70
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Immersive Projection Display (IPD) produces a high immersive feeling by cover around surrounding a viewer with screens. However, IPD is nearly impossible to use privately because of its cost and large scale. In this paper, we propose image projection with five surrounding walls to realize a high immersive feeling in our living room. In our image projection, five surrounding walls in the room are used as screen and images are projected on the front, top, bottom, left and right around the viewer by using four projectors. We prepare eleven image contents and examine by subjective evaluation whether the viewer receives a high immersive feeling from the projected images.
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  • Hiroya INOME, Eriko AIBA, Takayuki SHIMOTOMAI, Takashi FUJISAWA, Norik ...
    Article type: Article
    Session ID: ME2010-71
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    LED lights are expected to improve the visibility of emergency vehicles. We propose a two-stage method of evaluating the flash patterns of LED warning lights. In the first stage, we identify the visibility of many kinds of flash patterns using the mental measure of "distinctness" from Scheffe's paired comparison. In the second stage, we select a few kinds of flash patterns with higher distinctness out of patterns used in the first stage, and get the reaction time to their patterns with high accuracy. We conducted experiments on 3DCG simulation by creating CG animations as stimuli which LED Lights flashed in various patterns. The results of the two-stage evaluation using 11 flash patterns indicated that the mental measure of distinctness of the flash patterns of LED is correlated to the reaction time. We show a possibility that the most-visible flash pattern can be designed with this method.
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  • Hiroki KASATANI, Tomohiro OZAWA, Kazuki NISHI
    Article type: Article
    Session ID: ME2010-72
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The image registration is an essential technique for image stabilization and synthesis of a high-resolution image using multiple frames in camcorder. We have developed a novel system, called TEVRAIS, for detecting intra-frame camera shake and inter-frame one simultaneously by analyzing the camera image of a video test pattern. Many methods for detecting the sub-pixel displacement between two frames for arbitrary subject have also been proposed. In this paper, we focus on the phase-only correlation method and evaluate the performance of sub-pixel registration by comparing with detection results using TEVRAIS. Finally the video image super-resolution based on the phase-only correlation and the Kalman filter is presented.
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  • Ryouta Soukejima, Yutaka Nakano, Toshiyuki Yoshida
    Article type: Article
    Session ID: ME2010-73
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Epigenetics, which refers to the phenomenon that cells having an identical DNA sequence show mutually different biological characteristics after a cell division, or its related research area. The analysis of such a mechanism fundamentally requires an identification of the parent-child relationship of cells for several generations. Such a process has been performed manually by an expert, which is a very time-consuming task. This paper thus attempts to realize such an analyzing process by using some of the image processing techniques including an edge enhancement and watershed algorithms to construct an analysis adding tool for the epigenetics.
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  • Yoshihiro MITSUI, Atsushi YAMASHITA, Toru KANEKO
    Article type: Article
    Session ID: ME2010-74
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Currently there are a large amount of documents in the world. People have demands for carrying them portably and preserving valuable documents. To satisfy these demands, digitalization of documents has been developed. Camera-based methods for digitalization of documents have been investigated. However, methods both for correcting geometric distortion of folded and curved document images and for creating high-resolution images are few. We propose a method for doing both of them. Our method corrects geometric distortion by using applicable surface and creates high-resolution images by image mosaicing. Experimental results showed the effectiveness of the proposed method.
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  • Toshimi NAGURA, Shoji YAMAMOTO
    Article type: Article
    Session ID: ME2010-75
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In the present study, we propose the system of Semi-Stereoscopic display by controlling opposing arrangement two projection devices. This system separates an input image according to the rule, and projects back and forth to the screen each other. The separation rule was decided by the radiance, saturation and resolution, which are derived by a subjective evaluation. As the result, natural observation was presented by our proposed stereoscopic display.
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  • Hisae SHIMAMURA, Mie SATO, Masao KASUGA, Takao WATANABE
    Article type: Article
    Session ID: ME2010-76
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, investigating the specific evaluation method for business management and the evaluation element attract the attention. In this study. we focused on evaluating business management by using the qualitative evaluation that cannot be determined from the corporation achievement value. We conducted feature analysis from three factors, Employee-satisfaction (ES), Customer-satisfaction (CS), and Investor-satisfaction (IS). And we are conducting an investigation about the characteristic features that can lead a company to long existence and corporate growth.
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  • Shin-ya MIYAMOTO, Jun-ichi IMAI, Masahide KANEKO
    Article type: Article
    Session ID: ME2010-77
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Using the principal component analysis of shape and arrangement information of facial parts obtained from input images, it's possible to generate facial caricatures automatically by computer. Each principal component includes mixed information of facial parts features such as length, thickness and so on. Changes of these facial features depend on combination of principal components, and it's difficult to control them intuitively. This paper firstly examines the principal components which represent the features of facial part such as length. thickness and so on. Then these features are treated quantitatively and described by words. Next, the method to retrieve similar face images based on above features of each facial part is proposed. Subjective evaluation of retrieval results show that they accord with those obtained by human examinees.
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  • Mayuko KITAZUME, Yusuke IN, Yuki Odaka, Kento HIRANO, Masakazu HIGUCHI ...
    Article type: Article
    Session ID: ME2010-78
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    In recent years, location information of people has been attracting a lot of attentions as an element for construct of ubiquitous environment. Especially, high precision of that location information is very important in case of emergency. In order to realize the precision, technical challenges will be how to improve the precision of GPS information. So far, these issues have rarely been studied, however. In this paper, we use GPS on mobile phone as device of obtaining location information. We consider a method to improve the precision with mobile phone camera, and show experiment results by the method.
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  • Jun HASEGAWA, Mie SATO, Masao KASUGA
    Article type: Article
    Session ID: ME2010-79
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, we can easily have opportunities to see English subtitles. For instance, they are included in movies and news. English subtitles are composed of various words whose difficulties are low to high. When a viewer tries to understand English subtitles, those words that do not match viewer's English skill have the possibility of making the viewer difficult to understand. This study classifies viewer's English skill into levels based on the TOEIC score, and proposes a system that is more effective in understanding English subtitles by adding annotation to them according to viewer's level.
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  • Satomi YONEDA, Mie SATO, Masao KASUGA
    Article type: Article
    Session ID: ME2010-80
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Today, many varieties of magazine are published. When we choose a magazine, the cover of it plays an important role. For a magazine to be chosen in many magazines, high attention value on the magazine cover is necessary. Some studies of attention value reported that warm colors and colors of high brightness or high saturation have high attention value and that a large difference from surroundings is needed for standing out. In this paper, we examine whether these characteristics of attention value are found in magazine covers, and we study what conditions are needed for standing out from many magazine covers. Also, this paper mentions relation between a choice of the attention value and a magazine.
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  • Kosuke FUKUYAMA, Naoki HASHIMOTO
    Article type: Article
    Session ID: ME2010-81
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Recently, wide view-angle image projection in our accessible environments like a general room is focused as next generation IPT. Image projection onto arbitrary shaped surfaces of the room causes geometrical distortions. and some correction techniques with structured-light pattern projection are often used for that. However, such environment is surrounded with the surfaces as a screen, and complex indirect reflection disturbs precise recognition of the projected patterns. And then, the accuracy of the geometrical correction is greatly deteriorated. Therefore, in this research, we propose a technique for reducing the effects of the indirect reflected light by subdividing the projected patterns, and achieving high accuracy geometrical correction in such general rooms. This technique greatly contributes to making a general room into an immersive projection environment.
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  • Yutaka Sakanashi, Naoki Hashimoto
    Article type: Article
    Session ID: ME2010-82
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Front projection is often used for wide view-angle image projection in our accessible environment like an usual room, because of the space-limitation. However, the front projection generates viewer's shadows according to its view position, and they deteriorate quality and immersion of the projected images. Therefore, in this research, we propose an expansion of viewable areas with seamless switching of front-projected multiple projectors. In this approach, two projectors cover a same area redundantly, and with a previous measured response function, they are seamlessly switched to the projector which generates no shadows of the viewer. As a result, we can provide a novel front projection in which viewers can walk around freely.
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  • Koyu NUMATA, Eriko AIBA, Takashi X. FUJISAWA, Noriko NAGATA
    Article type: Article
    Session ID: ME2010-83
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Today, the digital camera has made it possible for people to take more "faithful" pictures easily. However, it is not always true that the subjective evaluation of image quality corresponds to the objective one. In some cases, adding noise and changing colors improve the subjective evaluation of image quality. The final goal of this study is to improve digital image quality. As a first step for constructing the image quality evaluation model, the effects of noise were observed in two psychological experiments. As a result, images to which appropriate noise was added might be evaluated higher than the original images on reality measures. Efforts to improve image quality must take into consideration human perception and manipulate physical factors appropriately. This research is a corporate-sponsored study.
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  • Makoto SATO
    Article type: Article
    Session ID: ME2010-84
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (131K)
  • Article type: Appendix
    Pages App1-
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (89K)
  • Article type: Appendix
    Pages App2-
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (89K)
  • Article type: Appendix
    Pages App3-
    Published: February 27, 2010
    Released on J-STAGE: September 21, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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