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USB microscope - uvcvideo greys out certain textures...

by dattaway on Fri Aug 31, 2012 2:26 pm

Trying out my new USB microscope. VERY easy to use and impressive image quality. This shows a whole new world. This is the real deal.

But when trying to view certain textured surfaces, such as a flat cast surface or the SOC on the Raspberry Pi, the image is progressively greyed out. It gets worse under perfect focus. It had the behavior of a copy protection scheme, so I started looking at currency and official certificates, which had no problems. Here is what I'm seeing on the Raspberry Pi SOC:

Image

What in the world? This only happens on a perfectly focused textured surface of a chip or metal surface. Do I have a bad debian binary of uvcvideo? Anyone else have this problem?
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Re: USB microscope - uvcvideo greys out certain textures...

by dattaway on Fri Aug 31, 2012 2:38 pm

SOLVED. One of debian's libraries used to scale the video stream has a bug. This doesn't happen at other resolutions.
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Re: USB microscope - uvcvideo greys out certain textures...

by bzorg on Tue Sep 18, 2012 1:04 pm

So it's working under linux ? :D
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