Cyclical image buffer
First Claim
1. In a system including an image processor attached to a storage buffer wherein the storage buffer includes a plurality of n columns of data, said columns numbered from zero to N, wherein N is greater than 1, a method for comparison between first image data and second image data, the method comprising the steps of:
- (a) comparing a patch of the first image data to a swath of the second image data, the storage buffer storing the swath of the second image data; and
(b) during said comparing, shifting of said swath using a hardware mechanism within the storage buffer, wherein said shifting includes upon each clock cycle of the processor;
(i) moving the data stored in column one into column N; and
(ii) moving the data stored in each of the n columns from column n into column n−
1.
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Accused Products
Abstract
A storage buffer attached to an image processor for stereo image processing. The processor compares a first image and a second image. The storage buffer stores image data of the second image. The storage buffer includes: a data-shifting-hardware mechanism which while the processor compares a patch of the first image to a swath of the second image, the data shifting mechanism using hardware within the storage buffer shifts at least a portion of the swath within the storage buffer. The data-shifting hardware mechanism includes preferably digital multiplexers with respective selectable inputs from adjacent and non-adjacent columns of data within the storage buffer and selectable inputs from adjacent rows of data within the storage buffer.
41 Citations
8 Claims
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1. In a system including an image processor attached to a storage buffer wherein the storage buffer includes a plurality of n columns of data, said columns numbered from zero to N, wherein N is greater than 1, a method for comparison between first image data and second image data, the method comprising the steps of:
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(a) comparing a patch of the first image data to a swath of the second image data, the storage buffer storing the swath of the second image data; and (b) during said comparing, shifting of said swath using a hardware mechanism within the storage buffer, wherein said shifting includes upon each clock cycle of the processor; (i) moving the data stored in column one into column N; and (ii) moving the data stored in each of the n columns from column n into column n−
1. - View Dependent Claims (2, 3, 4)
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5. A storage buffer attached to a processor, wherein the processor compares a first image and a second image, the storage buffer storing image data of the second image, wherein the storage buffer includes a plurality of n columns of data, said columns numbered from zero to N, wherein N is greater than 1, the storage buffer comprising:
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(a) a data-shifting-hardware mechanism which while the processor compares a patch of the first image to a swath of the second image, the data shifting mechanism using hardware within the storage buffer shifts at least a portion of the swath within the storage buffer wherein said data-shifting-hardware mechanism which upon each clock cycle of the processor; (i) moves the data stored in column one into column N; and (ii) moves the data stored in each of the n columns from column n into column n−
1. - View Dependent Claims (6, 7, 8)
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Specification