Method for performing box filter
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Mar 1, 1996
filing date -
Mar 1, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A computer implemented method for box filtering an array of data. The method includes a first step of filtering the rows of an array. The rows are in packed data sequences, each sequence having a plurality of packed data elements. Each row is filtered by generating copies of the row, aligning the copies, and generating a sum of the copies. The sum is generated by simultaneously adding corresponding packed elements of two rows in response to executing a first instruction. The columns of the array are filtered by sequentially adding, in response to executing the first instruction, filtered rows to a preceding and succeeding filtered row.
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