CMOS image sensor pixel sampling method
An image sensor and pixel technology, applied in image communication, TV, color TV components, etc., can solve problems such as pixel color errors
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[0040] In this embodiment, an image sensor with a size of 1216 rows×1928 columns is used as an example, the row number and column number are counted from 0, and the pixel sampling value is 6 / 8 (2×3 / 2 3 ), which is 3 / 4 sampling.
[0041] Because most color CMOS image sensors use the Bayer pattern mode, the color sequence is as follows figure 2 shown. In order to maintain the color order of the image, 3 / 4 sampling can only be achieved by outputting 6 rows per 8 rows and 6 columns per 8 columns. Divide the serial numbers of all rows and columns by 8 and take the remainder. According to the result, it can be known that all row numbers and column numbers are between 8n and 8n+7. If 3 / 4 sampling is realized, it is only necessary to read out the data of 8n+2~8n+7 lines, and discard the data of 8n~8n+1 lines. Similarly, in each readout row, only data of 8n+2 to 8n+7 columns are read.
[0042] During each row-to-column count, the column counter will skip ...
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