Design and Implementation of an Analog Motion Field Detection Integrated Circuit

• Main Authors: Lei, Ming-Han, 雷明漢
• Other Authors: Chiueh Tzi-Dar
• Format: Others
• Language: en_US
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/80359097186910883789

碩士 === 國立臺灣大學 === 電機工程學系研究所 === 86 === In this thesis, we proposed an analog integrated circuit to compute the motion field from a time-varying image, by means of gradient based optical flow computation. Integrated on-chip image sensor array converts optical input to electrical form. Local image intensity derivatives are used to compute the optical flow constraints. The motion cells enforces the optical flow constraints using a negative feedback loop. Non-linear resistive networks are used to provide least mean square error and smoothness constraints to the motion field. In order to preserve object boundaries, the smoothness constraints are adjusted according to discontinuities in the motion field and edges in the image. The chip is fabricated with a 0.5um DPDM CMOS process. Simulation and measurements are presented in the thesis.