Video image processor and method for detecting vehicles

Details Video image processor and method for detecting vehicles Video image processor and method for detecting vehicles

1991-11-04

1996-07-09

Herndon, Heather R.

G06T 740

Patent

active

055353142

ABSTRACT:
A video image processor (100) for processing video images performing the steps of generating video images (103) with a multi-spectral video source (102), converting analog color data contained in the generated video images (103) to digital color data for subsequent signal processing, extracting the digital color data from designated areas of the generated video images and utilizing the extracted digital color data for identifying a color distinguishable from a background color. Thus, the video image processor (100) processes the generated video images and has an intrinsic immunity to the effects of shadows by exploiting multi-spectral color information to distinguish, for example, a passing vehicle from the roadway 116. In a preferred embodiment, the video image processor (100) includes a multi-spectral video source (102) for generating the video images. A color digitizer (104) is employed for converting the analog color data contained in the generated video images to the digital color data for the subsequent signal processing. Then, a digital signal processor (106) is employed to extract the digital color data from the designated areas of the generated video images. Finally, a central processing unit (108) utilizes the extracted digital color data to identify a color distinguishable from the background color.

REFERENCES:
patent: 4812904 (1989-03-01), Maring et al.
patent: 4847772 (1989-07-01), Michalopoulos et al.
patent: 5093871 (1992-05-01), Klein et al.

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