Point Grey Flea3 GigE Technical Reference
9 Troubleshooting
9.6
Blemish Pixel Artifacts
Cosmic radiation may cause random pixels to generate a permanently high charge, resulting in a permanently lit, or
'glowing,' appearance. Point Grey tests for and programs white blemish pixel correction into the camera firmware.
In very rare cases, one or more pixels in the sensor array may stop responding and appear black (dead) or white
(hot/stuck).
9.6.1
Pixel Defect Correction
Point Grey tests for blemish pixels on each camera. The mechanism to correct blemish pixels is hard-coded into the
camera firmware, and can be turned off and on by the user . Pixel correction is on by default. The correction algorithm
involves applying the average color or grayscale values of neighboring pixels to the blemish pixel.
Pixel correction is not done in any of the
binning modes
.
Title
Article
How Point Grey tests for white blemish pixels
Knowledge Base Article 314
Related Knowledge Base Articles
To access pixel correction use:
n
CSRs—
PIXEL_DEFECT_CTRL: 1A60h
Revised 10/29/2013
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