Network-linked long-time recording high-speed video camera system

Seiji Kimura; Masataka Tsuji

doi:10.1117/12.424278

17 April 2001 Network-linked long-time recording high-speed video camera system

Seiji Kimura, Masataka Tsuji

Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424278
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan

Abstract

This paper describes a network-oriented, long-recording-time high-speed digital video camera system that utilizes an HDD (Hard Disk Drive) as a recording medium. Semiconductor memories (DRAM, etc.) are the most common image data recording media with existing high-speed digital video cameras. They are extensively used because of their advantage of high-speed writing and reading of picture data. The drawback is that their recording time is limited to only several seconds because the data amount is very large. A recording time of several seconds is sufficient for many applications. However, a much longer recording time is required in some applications where an exact prediction of trigger timing is hard to make. In the Late years, the recording density of the HDD has been dramatically improved, which has attracted more attention to its value as a long-recording-time medium. We conceived an idea that we would be able to build a compact system that makes possible a long time recording if the HDD can be used as a memory unit for high-speed digital image recording. However, the data rate of such a system, capable of recording 640 X 480 pixel resolution pictures at 500 frames per second (fps) with 8-bit grayscale is 153.6 Mbyte/sec., and is way beyond the writing speed of the commonly used HDD. So, we developed a dedicated image compression system and verified its capability to lower the data rate from the digital camera to match the HDD writing rate.

Citation Download Citation

Seiji Kimura and Masataka Tsuji "Network-linked long-time recording high-speed video camera system", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); https://doi.org/10.1117/12.424278

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KEYWORDS

Image processing

Cameras

Clocks

Imaging systems

High speed cameras

Image compression

Field programmable gate arrays

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