Programmable sliding window for image processing

Details Programmable sliding window for image processing Programmable sliding window for image processing

2005-05-31

2005-05-31

Bella, Matthew C. (Department: 2676)

Computer graphics processing and selective visual display system

Computer graphics display memory system

Plural storage devices

C345S536000, C345S543000, C345S548000, C345S562000

Reexamination Certificate

active

06900811

ABSTRACT:
A sliding window (block) system incorporating a methodology for providing a processor access to image data is described. In an exemplary embodiment, the system operates as follows. An image is received for processing that has a size that is too large for the processor to access directly. As a result, the sliding window system creates first, second, and third swappable windows (blocks) for accessing image data from the image; each windows is swappable so that any two are available within the memory space of the processor while a third is being loaded in a background memory. The system cycles through the three windows such that, at any given point in time, two of the three windows are affixed in the memory space of the processor as left and right adjacent windows, while the remaining or third window is being loaded in the background (e.g., in a DRAM) as a temporary shadow or background window. After the shadow window is loaded with appropriate image data, it is brought into the foreground (i.e., within the memory space of the processor) as the new right window. The prior (old) right window now becomes the new left window; the prior (old) left window now becomes a new shadow or background window. The process repeats as necessary, until all image data of the target image has been accessed/processed.

REFERENCES:
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patent: 6463481 (2002-10-01), Lupien et al.
patent: 6631316 (2003-10-01), Stam et al.

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