Moving object perception and tracking by use of DSP

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.

[1]  V. M..  Generalized Gradient Schemes for the Measurement of Two-Dimensional Image Motion , .

[2]  Berthold K. P. Horn,et al.  Determining Optical Flow , 1981, Other Conferences.

[3]  Reinhold Behringer,et al.  An all-transputer visual autobahn-autopilot/copilot , 1993, 1993 (4th) International Conference on Computer Vision.

[4]  Yoshiaki Shirai,et al.  Detecting Multiple Rigid Image Motions from an Optical Flow Field Obtained with Multi-Scale, Multi-Orientation Filters , 1993 .

[5]  Volker Graefe,et al.  Visual detection of distant objects , 1993, Proceedings of 1993 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS '93).

[6]  Ian D. Reid,et al.  Reactions to peripheral image motion using a head/eye platform , 1993, 1993 (4th) International Conference on Computer Vision.

[7]  Rachid Deriche,et al.  Fast algorithms for low-level vision , 1988, [1988 Proceedings] 9th International Conference on Pattern Recognition.

[8]  S. Chatterjee,et al.  Regression Analysis by Example , 1979 .

[9]  Roman Kuc,et al.  Introduction to Digital Signal Processing , 2021, Digital Signal Processing.

[10]  N. Draper,et al.  Applied Regression Analysis , 1966 .

[11]  Masayuki Inaba,et al.  Robot vision system with a correlation chip for real-time tracking, optical flow and depth map generation , 1992, Proceedings 1992 IEEE International Conference on Robotics and Automation.

[12]  Yoshiaki Shirai,et al.  Segmentation and 2D motion estimation by region fragments , 1993, 1993 (4th) International Conference on Computer Vision.

[13]  Y. V. Venkatesh,et al.  Measurement of complex optical flow with use of an augmented generalized gradient scheme , 1994 .

[14]  Norman R. Draper,et al.  Applied regression analysis (2. ed.) , 1981, Wiley series in probability and mathematical statistics.

[15]  Mandyam V. Srinivasan,et al.  Measurement of optical flow by a generalized gradient scheme , 1991 .