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Proceedings Paper

A neighbor pixel communication filtering structure for Dynamic Vision Sensors
Author(s): Yuan Xu; Shiqi Liu; Hehui Lu; Zilong Zhang
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Paper Abstract

For Dynamic Vision Sensors (DVS), thermal noise and junction leakage current induced Background Activity (BA) is the major cause of the deterioration of images quality. Inspired by the smoothing filtering principle of horizontal cells in vertebrate retina, A DVS pixel with Neighbor Pixel Communication (NPC) filtering structure is proposed to solve this issue. The NPC structure is designed to judge the validity of pixel’s activity through the communication between its 4 adjacent pixels. The pixel’s outputs will be suppressed if its activities are determined not real. The proposed pixel’s area is 23.76×24.71μm2 and only 3ns output latency is introduced. In order to validate the effectiveness of the structure, a 5×5 pixel array has been implemented in SMIC 0.13μm CIS process. 3 test cases of array’s behavioral model show that the NPC-DVS have an ability of filtering the BA.

Paper Details

Date Published: 8 February 2017
PDF: 6 pages
Proc. SPIE 10225, Eighth International Conference on Graphic and Image Processing (ICGIP 2016), 102251K (8 February 2017); doi: 10.1117/12.2266241
Show Author Affiliations
Yuan Xu, Shenzhen Univ. (China)
Shiqi Liu, Shenzhen Univ. (China)
Hehui Lu, Shenzhen Univ. (China)
Zilong Zhang, Shenzhen Univ. (China)

Published in SPIE Proceedings Vol. 10225:
Eighth International Conference on Graphic and Image Processing (ICGIP 2016)
Yulin Wang; Tuan D. Pham; Vit Vozenilek; David Zhang; Yi Xie, Editor(s)

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