Title :
Moving object perception and tracking by use of DSP
Author :
Shirai, Yoshiaki ; Miura, Jun ; Mae, Yasushi ; Shiohara, Morito ; Egawa, Hiroichi ; Sasaki, Shigeru
Author_Institution :
Fac. of Eng., Osaka Univ., Japan
Abstract :
The authors describe a system for real time optical flow extraction and tracking an object. The optical flow extraction is based on the generalized gradient model, and calculates the velocity of an image patch by measuring the spatial and temporal intensity gradients in the patch. The system is a linear array processor capable of processing directly TV images in real time. It consists of a video I/O board and DSP boards. Each DSP board includes two TMS320C40 DSP chips, and can be connected to tandem DSP boards to build up a linear array system. By adding a few DSP boards, the system can track a specified object in a complex background. Extraction of more reliable optical flows and the uncertainty of the flow is also described which is useful for segmentation of the flow field
Keywords :
image sequences; DSP; DSP boards; DSP chips; TV images; complex background; digital signal processing; flow uncertainty; generalized gradient model; image patch; linear array processor; moving object perception; moving object tracking; real time optical flow extraction; segmentation; spatial intensity gradients; tandem DSP boards; temporal intensity gradients; velocity; video I/O board; Digital signal processing; Digital signal processing chips; Equations; Filtering; Fluid flow measurement; Image motion analysis; Optical computing; Optical filters; Real time systems; Uncertainty;
Conference_Titel :
Computer Architectures for Machine Perception, 1993. Proceedings
Conference_Location :
New Orleans, LA
Print_ISBN :
0-8186-5420-1
DOI :
10.1109/CAMP.1993.622479
