LittleSilverstar wrote:[...] so I tested with backroundfilter -1.
Khalid Khattak wrote:Hi Sven
I am getting the similar noise as you have shown in Yellow color (Right side) scan.. I don't know why i am getting... Is their any possibility to avoid?
My paper is 100% flat...
hal wrote:Hello Jenny,LittleSilverstar wrote:[...] so I tested with backroundfilter -1.
Have you also set the right value for the "AllowPointsBehindPlanes"? You need to change it to "True".
To scan the panels and behind they, you need to change both parameters: "BackgroundFilterFactor" and "AllowPointsBehindPlanes".
WalterMo wrote:The C600 shows the same behavior at 30 and 15 fps like the new Webcam Pro9000.
Also I noticed that the camera image was upside down with DAVID 2.6 and 2.6.1, but not with 2.5.5 or older versions. And each time in DAVID (even without to close it) when I change from camera calibration to 3D Laser Scanning or vice versa the image is again upside down. It's not so nice each time to delete both hooks in the camera settings for horizontal and vertical mirroring.
With the CCD camera you should have very low noise only. Please set all camera settings to default (there is a default button) and only adjust exposure. Usually you get less noise when you turn up the mechanical aperture and turn down the exposure time. In your image the line seems rather bright.
Sorry, your measurement of the 90° angle does not work like that. When DAVID calculates 3D point, it assumes that the background panels have exactly 90°, then computes the laser light plane from that --> the result will always be 90°. You'll have to check that by other means.
What kind of noise do you have? Usually a not-90°-angle corner will not cause noise, but scan distortions / deformation.
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