| Presentation | 2001/1/24 Development of Video-Rate Rnagefinder using Light Intensity Modulation Takeo Azuma, Kenya Uomori, Kunio Nobori, Atsushi Morimura, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a new real-time active range finder system, which operates at a video field rate. Our system consists of a laser line pattern marker, a rotating mirror, a camera with an image intensifier, an optical narrow bandpass filter, and an image signal processor. The horizontal laser line pattern is vertically scanned by the video-synchronized rotating mirror. The pattern is modulated with alternating a monotone decreasing intensity function and a monotone increasing function. Depth images are obtained using the intensity ratio of successive video field images, the coordinates of each pixel, and the baseline length. The intensity ratio specifies a line pattern in a plane. Meanwhile, the coordinates of each pixel specify a line that goes through the pixel position on the CCD and the center of the lens. Depth is calculated as an intersection point on the specified plane and line. The image signal processor can perform the above calculation using LUTs within a video field. Experimental results show that a three meters measurable range is obtained with a 100 mW laser power, and the standard deviations of the depth images are about 2.5%-2.7% of the measured depth. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | laser / light intensity modulation / video-rate / rangefinder / depth image |
| Paper # | EID2000-310,IE2000-165 |
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| Conference Information | |
| Committee | EID |
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| Conference Date | 2001/1/24(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Electronic Information Displays (EID) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Video-Rate Rnagefinder using Light Intensity Modulation |
| Sub Title (in English) | |
| Keyword(1) | laser |
| Keyword(2) | light intensity modulation |
| Keyword(3) | video-rate |
| Keyword(4) | rangefinder |
| Keyword(5) | depth image |
| 1st Author's Name | Takeo Azuma |
| 1st Author's Affiliation | Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd.() |
| 2nd Author's Name | Kenya Uomori |
| 2nd Author's Affiliation | Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd. |
| 3rd Author's Name | Kunio Nobori |
| 3rd Author's Affiliation | Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd. |
| 4th Author's Name | Atsushi Morimura |
| 4th Author's Affiliation | Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd. |
| Date | 2001/1/24 |
| Paper # | EID2000-310,IE2000-165 |
| Volume (vol) | vol.100 |
| Number (no) | 605 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |