模拟视网膜双通道机制，实现亮度与对比度的高效编码
Neuromorphic Dual-channel Encoding of Luminance and Contrast
- 借鉴视网膜双通道原理，分别处理亮度和对比度信号
- 在七数量级范围内实现亮度判断的对数线性响应
- 适合神经形态计算与低功耗视觉系统研究者参考
有感知和生理证据表明，视网膜通过双通道机制记录并传递亮度和亮度对比度。该过程始于视网膜，其中均匀区域的亮度及相邻区域间的亮度差异决定了各区域的明暗程度。处理这些信息的神经元可分类为“亮”通道和“暗”通道。本文综述了这些视网膜机制，并提供证据表明它们能实现跨越约七个数量级的对数线性亮度判断。
原文摘要 · Abstract (English)
There is perceptual and physiological evidence that the retina registers and signals luminance and luminance contrast using dual-channel mechanisms. This process begins in the retina, wherein the luminance of a uniform zone and differentials of luminance in neighboring zones determine the degree of brightness or darkness of the zones. The neurons that process the information can be classified as "bright" or "dark" channels. The present paper provides an overview of these retinal mechanisms along with evidence that they provide brightness judgments that are log-linear across roughly seven orders of magnitude.
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