| 视网膜皮层图像信号处理的传输机制与仿真 |
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| 引用本文： | 王立,张科,李言俊.视网膜皮层图像信号处理的传输机制与仿真[J].光学技术,2003,29(4):420-422. |
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| 作者姓名： | 王立 张科 李言俊 |
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| 作者单位： | 西北工业大学,航天工程学院导航制导教研室,陕西,西安,710072 |
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| 基金项目： | 国家航空科学基金资助项目(2000CH8080) |
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| 摘 要： | 侧抑制是神经系统普遍存在的机理。从侧抑制模型出发进行了视网膜处理及传输机制的研究,提出了基于差分方程的循环侧抑制动态数学模型。通过剖析视网膜感应细胞对光刺激的反应特性,阐述了视网膜皮层电脉冲信号的发放机制,指出了视网膜输出信号是以物体边缘信息为主体的传输机制。结合循环侧抑制动态数学模型,并考虑视网膜感应细胞对光刺激的适应性,创新性地进行了图像信号传递及处理的仿真模拟。
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| 关 键 词： | 视网膜 侧抑制 传输机制 计算机仿真 |
| 文章编号： | 1002-1582(2003)04-0420-03 |
| 修稿时间： | 2002年9月16日 |
Image transfer mechanism and simulation of retina |
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| Abstract: | A characteristic pattern of connections among neurons (nerve cell) in the eyes of most animals (including humans) is lateral inhibition network. Begin with it, the processing and transfer mechanism of retina are discussed. A new dynamic mathematic mode of recurrent lateral inhibition is put forward by form of different equations. Through the interpretation of impulse firing mechanism of retina in detail, transfer mechanism of the retina is pointed out, it is main body of edges information of object. To connect with the recurrent lateral inhibition model, an innovative computer simulation is carried out, in addition the visual adaptation is considered too. |
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| Keywords: | retina lateral inhibition transfer mechanism computer simulation |
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