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- W2014241602 abstract "This paper discusses a technique for video enhancement averaging of the surrounding area of each sampled cell when the source of the electronic image is the output of a CCPD linear array. In order to achieve the high speed output required for imaging from a document moving at up to 400 inches/second with resolution of up to 240 pixels per inch, it is necessary to sample in eight parallel segments of 128 cells and reconstruct these parallel outputs as if they were coming from one continuous 1024 linear source. This requires that one provide a means of bit averaging the background surrounding each sample and specifically provides a means for "healing" the seam between the last cell of each of the eight segments and the first cell of the next. All eight segments present cell #1 during the same clock time and present the next cell during the next clock time; therefore, cell #128 of segment #1 is "looking" at the adjacent vertical position to cell #1 of segment #2, but segment #2, cell #1 was clocked out at the same time as cell #1 of segment #1 or 128 clock times earlier. This makes it necessary to provide a means of "healing" the seams between segments thus allowing the correlation of each cell with the surrounding area that includes cells sampled from adjacent segments. This segment to segment data passing is necessary between the first and last of several cells per segment. The exact number depends on the area size of the correlation desired. The area used to average and correlate is usually between 3x3 and 7x7 in order to obtain optimum center cell comparison. The area size must be odd in order to provide the same number of background cells above and below or to the right and to the left of the center cell." @default.
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- W2014241602 date "1989-04-05" @default.
- W2014241602 modified "2023-09-23" @default.
- W2014241602 title "Parallel Processing Correlator For High Speed Capture Utilizing Multiple Array Segments" @default.
- W2014241602 doi "https://doi.org/10.1117/12.952627" @default.
- W2014241602 hasPublicationYear "1989" @default.
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