Analog Integrated Circuit for Motion Detection against Moving Background Based on the Insect Visual System
Analog Integrated Circuit for Motion Detection against Moving Background Based on the Insect Visual System
复制标题
基于昆虫视觉系统的运动背景运动检测模拟集成电路
DOI：
10.1007/s10043-004-0024-4
复制
发表时间：
2004
期刊：
影响因子：
1.2
通讯作者：
Y. Furukawa
中科院分区：
文献类型：
--
作者：
K. Nishio;H. Yonezu;Amal Bandula Kariyawasam;Y. Yoshikawa;S. Sawa;Y. Furukawa
提出并设计了一种基于昆虫视觉系统的目标边缘速度信号显示网络。在昆虫视觉系统中，背景产生的速度信号被各细胞速度信号平均后产生的信号所抑制，只能显示目标的速度信号。该网络由简单的模拟电路构成。对1.2mUm互补金属氧化物半导体（CMOS）工艺制作的测试芯片的测量结果表明，插入到网络第一级的边缘检测电路可以检测到边缘位置。从由分立的金属氧化物半导体（MOS）晶体管构成的测试电路的测量结果可以明显看出，构成网络的所提出的单元电路可以通过输入边缘信号来产生速度信号。用集成电路仿真程序（SPICE）进行的仿真结果表明，该网络只能显示目标边缘的速度信号，而不能显示背景的速度信号。因此，澄清了通过使用所提出的网络，可以独立于背景来检测目标的各种运动方向。
A network for displaying the velocity signal of a target edge which has larger velocity than the background was proposed and designed based on an insect visual system. In the insect visual system, the velocity signals generated by the background are inhibited by the signals generated by averaging the velocity signals from each cell and can only display the velocity signals of the target. The proposed network was constructed with simple analog circuits. The measured results of the test chip fabricated with the 1.2$mUm complementary metal-oxide-semiconductor (CMOS) process showed that the edge detection circuit inserted to the first stage of the proposed network can detect the edge position. It was apparent from the measured results of the test circuit constructed with discrete metal-oxide-semiconductor (MOS) transistors that the proposed unit circuit constructing the network can generate the velocity signals by inputting the edge signals. The results with the simulation program with integrated circuit emphasis (SPICE) showed that the proposed network can only display the velocity signals of the target edges but not those of the background. Thus, it was clarified that the various motion directions of the target can be detected independent of the background by using the proposed network.