Mr. Guang Xu Profile

Guang Xu

at Zhejiang Univ

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Proceedings Article | 30 November 2012 Paper

A portable high-definition electronic endoscope based on embedded system

Guang Xu, Liqiang Wang, Jin Xu

Proceedings Volume 8558, 85580I (2012) https://doi.org/10.1117/12.999806

KEYWORDS: Endoscopes, Cameras, CMOS sensors, Image processing, Embedded systems, Video, LCDs, Operating systems, Human-machine interfaces, Image resolution

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This paper presents a low power and portable highdefinition (HD) electronic endoscope based on CortexA8 embedded system. A 1/6 inch CMOS image sensor is used to acquire HD images with 1280 *800 pixels. The camera interface of A8 is designed to support images of various sizes and support multiple inputs of video format such as ITUR BT601/ 656 standard. Image rotation (90 degrees clockwise) and image process functions are achieved by CAMIF. The decode engine of the processor plays back or records HD videos at speed of 30 frames per second, builtin HDMI interface transmits high definition images to the external display. Image processing procedures such as demosaicking, color correction and auto white balance are realized on the A8 platform. Other functions are selected through OSD settings. An LCD panel displays the real time images. The snapshot pictures or compressed videos are saved in an SD card or transmited to a computer through USB interface. The size of the camera head is 4×4.8×15 mm with more than 3 meters working distance. The whole endoscope system can be powered by a lithium battery, with the advantages of miniature, low cost and portability.

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