VCC-5CL4M
Rev.905-0060-04
©2016 CIS Corporation. All rights reserved.
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10.
Pixel Defect Correction
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This is the function to detect and correct the pixel defects in the data output from the sensor.
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Data are categorized into 2 types and controlled.
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Data at ex-factory
The detected data of white pixel defects and black pixel defects at Ex-Factory are saved.
Basically, these data cannot be erased.
・
Data the user registered
Data increased after shipment or the one registered by the user.
These data can be erased anytime.
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Pixel defect correction data for normal mode and for vertical flip mode are saved separately.
(Pixel defect position and number are different at normal mode and at vertical flip mode).
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The number of data registerable by users is 128. (Note: Up to 32 points per CH.)
[CH (Channel)]
Images are processed by 4CH interleaves.
(0,0) (1,0) (2,0) (3,0)
(0,1) (1,1) (2,1) (3,1)
・・・
・・・
・・・
・・・
ch1
ch2
ch3
ch4
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The registerable number of pixel defects and the correctable number of pixel defects may not be always the same.
(1)
With white defects detection, if one of the strip reed reached the maximum number, correction could not be
performed. In such case, the data up to that point are registered, error is output, and operation ends.
(2)
If no effective pixel exists up next, down next, right next, or left next to the pixel to be corrected, this pixel
can be registered but cannot be corrected.
For example, when X1, X2, X3, and X4 are already registered as defected pixels, X can
be added to be registered but it cannot be corrected.
