Memorial day is 05/25/2015 – Orders will ship out on May 26th. There will not be any deliveries or shipping on Monday. Any order placed after 11am ET on Friday May 22nd will not start to ship out until Tuesday May 26th.

USB microscope - uvcvideo greys out certain textures...
Moderators: adafruit_support_bill, adafruit

USB microscope - uvcvideo greys out certain textures...

by dattaway on Fri Aug 31, 2012 3:26 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?
dattaway
 
Posts: 8
Joined: Wed Sep 28, 2011 10:28 pm

Re: USB microscope - uvcvideo greys out certain textures...

by dattaway on Fri Aug 31, 2012 3:38 pm

SOLVED. One of debian's libraries used to scale the video stream has a bug. This doesn't happen at other resolutions.
dattaway
 
Posts: 8
Joined: Wed Sep 28, 2011 10:28 pm

Re: USB microscope - uvcvideo greys out certain textures...

by bzorg on Tue Sep 18, 2012 2:04 pm

So it's working under linux ? :D
User avatar
bzorg
 
Posts: 6
Joined: Fri Jun 29, 2012 6:13 pm