Title :
A 1-D local image velocity sensor using Gabor filtering
Author :
Lau, Kwok Kit ; Shi, Bertram E.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
We propose gradient-based algorithm for local velocity estimation that uses a Gabor-type filter as a spatial pre-filtering stage. An integrated differentiation and division circuit extracts the local image velocity in continuous time. We describe the design, implementation and the simulation results of a 1-D velocity sensor consisting of 27 pixels. Each pixel generates two outputs: the local image velocity and the local motion direction
Keywords :
analogue processing circuits; gradient methods; motion estimation; spatial filters; Gabor filtering; analog VLSI chip; gradient algorithm; integrated differentiation and division circuit; one-dimensional local image velocity sensor; Band pass filters; Circuit simulation; Correlation; Filtering; Gabor filters; Gradient methods; Image sensors; Laplace equations; Noise reduction; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.857121
