Progressive block encoding using region analysis
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United States of America Patent
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Jan 31, 2012
Grant Date -
N/A
app pub date -
Sep 29, 2006
filing date -
Jul 28, 2005
priority date (Note) -
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Abstract
The present invention provides a method of progressively encoding and transmitting visual data. First image information updates are acquired for a region of visual data. The region of visual data is defined by a plurality of blocks of pixel data, and individual blocks of the plurality are associated with individual change histories for their respective pixel data. Stored region information including a recent encoded state for each block in the plurality is retrieved. Available network bandwidth is determined, and then encoding parameters for each block in the region of visual data are determined from the retrieved region information and the available network bandwidth. The plurality of blocks is then encoded, the retrieved region information is updated in accordance with the determined encoding parameters; and the encoded blocks are transmitted across a computer network.
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