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Stripe artifacts (or not) from a gc2035 sensor


aliceander

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I think I have a bad gc2035 module that I'll soon put aside, but there's something odd I don't understand.  Since it's cheap it doesn't merit a lot of attention, but I've got something that doesn't make sense to me.  If you understand, please let me know.

 

An image at 800x600 is messed up with horizontal stripe artifacts (fswebcam -r 800x600 -p YUV420P ->  foo-800x600.jpg)

 

post-1552-0-10471700-1468708635_thumb.jpg

 

But an image at 1280x720, while blurry, does not have the stripe artifacts (fswebcam -r 1280x720 -p YUV420P -> foo-1280x720.jpg)

 

post-1552-0-34286500-1468708642_thumb.jpg

 

Why aren't stripe artifacts in the higher resolution?  I thought the sensor was completely trashed, but it produced a halfway decent image when asked to produce at a resolution unreasonably high for it's capabilities.  Shouldn't I get more artifacts at higher resolutions? 

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