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Article type: Cover
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Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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Article type: Index
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Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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Akira ISHII
Article type: Article
Session ID: IST2009-83
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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This paper describes various types of shape-from-focus methods and their applications in machine vision for three-dimensional shape measurement. After summarizing the current focus technologies, it presents novel high-speed focus systems using a varifocal mirror or lens based on perfect parallel and perspective projection. Finally, taking the advantages of less occlusion and shallow depth-of-field in close-up imaging, it gives the promise of a shape-from-focus method as a coming machine vision for robotic handling in a desktop work space. Furthermore, it describes the anticipation for bio-mimetic vision with high-speed focus and fixation control as an active vision.
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Hiromasa OKU, Masatoshi ISHIKAWA
Article type: Article
Session ID: IST2009-84
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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In this paper, a high-speed liquid lens, called Dynamorph Lens (DML), which has high-speed response speed and high resolution, is explained. A prototype of the DML achieved a step-response time of 2ms and a wave-front error of 80.3nm (RMS). A concept of high-speed focusing vision that is a high-speed vision coupled with high-speed optical system without speed bottle-neck, is explained. A high-speed autofocus and a focus tracking were successfully conducted using a preliminary developed system. Finally, a concept of dynamic image control is explained and demonstrated by a microorganism tracking microscope system and a high frame-rate focus stacking experiment.
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Hiroshi IKEOKA, Takayuki HAMAMOTO
Article type: Article
Session ID: IST2009-85
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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We have been investigating real-time depth estimation techniques with wide detectable range using variance of depth of field on the horizontal planes of sharp focus by tilted optics imaging. It needs extremely fewer multiple focus images than the conventional passive methods; like the Depth-from-Focus and the Depth-from-Defocus. Hence, our method gets rid of the bottleneck of conventional methods; the motion speed of optical mechanics is very slower than that of image processing parts. Therefore, it is suitable for the application with the depth estimation that needs wide detectable range and real-time processing such as automotive tasks.
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Hirokazu NAKAZAWA, Makoto ISHIDA, Kazuaki SAWADA
Article type: Article
Session ID: IST2009-86
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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One of the most useful information in the chemical field is the pH. On the other hand the most important information for mankind involves light. The purpose of this study is fabrication of fused pH and optical image sensors, which can be obtained the two-dimensional pH and optical distribution in real-time.
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Seiji KAMEDA, Yusuke MORIYAMA, KENICHI Noda, Atsushi IWATA
Article type: Article
Session ID: IST2009-87
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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A high sensitivity photo sensor was developed for a luciferin-luciferase bioluminescent reaction-based bacterial detection. The photo sensor requires a high sensitivity photo detector because a detecting target has very low luminescent which is about 10^<-5>lux. Therefore, the photo sensor was realized high sensitivity by a long exposure time, a large photo detective area and temporal noise reducing techniques, and fabricated in the 0.18μm CMOS image sensor process. The photo sensor was confiremed a possibility of low bioluminescent detection.
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Hiroki Minami, Ayato Tagawa, Masahiro Mitani, Toshihiko Noda, Kiyotaka ...
Article type: Article
Session ID: IST2009-88
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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We are investigating CMOS image sensors which can be directly implanted in the deep brain of mouse for observation neural activities through fluorescence. LED, color filter and infusion cannula was integrated on the sensor module to observe fluorescence in the brain of mouse. Fabricated sensor was evaluated with a brain phantom, fluorescence of AMC (7-Amino4-MethylCoumarine) excited by UV-LED was successfully observed.
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Masahiro KAWAKITA
Article type: Article
Session ID: IST2009-89
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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Three-dimensional (3-D) image capturing methods in broadcasts are categorized in passive method and active method. One example of the passive methods is an integral imaging method for a future 3-D TV. We also describe Axi-Vision Camera based on active method that can be applied to the image synthesizing using depth information. Moreover, we report the details of newly developed Axi-Vision Camera that can detect the depth image of fast-moving objects.
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Article type: Appendix
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Published: November 13, 2009
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Article type: Appendix
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Published: November 13, 2009
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Article type: Appendix
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App3-
Published: November 13, 2009
Released on J-STAGE: September 20, 2017
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