Vision coprocessing

Details Vision coprocessing Vision coprocessing

1995-12-05

1998-08-11

Boudreau, Leo

Image analysis

Image enhancement or restoration

Image filter

382262, 382303, 382307, G06K 940

Patent

active

057938997

ABSTRACT:
A coprocessor in an image processing system is coupled to the bus to which a CPU and RAM holding image data are also coupled. The coprocessor extracts an input pixel stream corresponding to input images from selected bus transactions, performs computations on the input stream to produce output pixel streams corresponding to output images, and inserts the output pixel streams into selected CPU-to-memory bus transactions so that the memory stores the data. The CPU generates the selected bus transactions with specially marked address and/or control signals. The coprocessor includes a lookup table, and a first row delay. The row delay accumulates the three most recent rows of input pixels, which are sent to Sobel and rank processing sections for neighborhood processing. The results are thresholded and formatted, and are either output directly or passed through an additional pair of row delays to accumulate three rows of result data for neighborhood peak detection.

REFERENCES:
patent: 4541116 (1985-09-01), Lougheed

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