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Toward the Next Generation of Retinal Neuroprosthesis: Visual Computation with Spikes Review

Zhaofei Yu, Jian K. Liu, Shanshan Jia, Yichen Zhang, Yajing Zheng, Yonghong Tian, Tiejun Huang

Engineering 2020, Volume 6, Issue 4,   Pages 449-461 doi: 10.1016/j.eng.2020.02.004

Abstract: The retina computes visual scenes and sends its output to the cortex in the form of neuronal spikes forWe hypothesize that in order to obtain a better understanding of the computational principles in the retina, a hypercircuit view of the retina is necessary, in which the different functional network motifs thatbeen revealed in the cortex neuronal network are taken into consideration when interacting with the retina—both chemical synapses and electrical synapses (gap junctions)—make the retina an ideal

Keywords： Visual coding     Retina     Neuroprosthesis     Brain–machine interface     Artificial intelligence     Deep learning    

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Motion detection for high-speed high-brightness objects based on a pulse array image sensor Research Article

Peiwen ZHANG, Jiangtao XU, Huafeng NIE, Zhiyuan GAO, Kaiming NIE,authorneptune@tju.edu.cn,xujiangtao@tju.edu.cn,niehuafeng_ee@163.com,flyuphigher@outlook.com,nkaiming@tju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 1,   Pages 113-122 doi: 10.1631/FITEE.2000407

Abstract: We describe a method of extraction for high-speed high-brightness targets based on a pulse array image sensor (PAIS). PAIS is a with pixels triggered by light; it can convert light into a series of pulse intervals. This method can obtain from pulse data directly by accumulating continuous pulses. The triggered points can be used to filter redundant data when the target is brighter than the background. The method takes full advantage of the rapid response of PAIS to high-brightness targets. We applied this method to extract the of high-speed turntables with different background brightness, with the sensor model and actual data, respectively. Under the sampling condition of 2×10 frames/s, the could be extracted from a high-speed turntable rotating at 1000 r/min. More than 90% of redundant points could be filtered by our method. Experimental results showed that the extraction algorithm based on pulse data can extract the information of high-brightness objects efficiently without the need to reconstruct images.

Keywords： Optical flow     Retina-like image sensor     Pulse triggered     High-speed targets     Vision processing    

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Title Author Date Type Operation

Toward the Next Generation of Retinal Neuroprosthesis: Visual Computation with Spikes

Zhaofei Yu, Jian K. Liu, Shanshan Jia, Yichen Zhang, Yajing Zheng, Yonghong Tian, Tiejun Huang

Journal Article

Motion detection for high-speed high-brightness objects based on a pulse array image sensor

Peiwen ZHANG, Jiangtao XU, Huafeng NIE, Zhiyuan GAO, Kaiming NIE,authorneptune@tju.edu.cn,xujiangtao@tju.edu.cn,niehuafeng_ee@163.com,flyuphigher@outlook.com,nkaiming@tju.edu.cn

Journal Article