Optical display of AVI file stream

Hello

I'm tring to display vectors of optical flow. AVI file. I work in the "Optical Flow.vi" example. I can't the optic to display flow vectors. To check if I have the right image formats, I've set up poster on the Panel before the 'current' and 'previous image', which are the inputs to the optic flow calculator. At the bottom of these views of the image, it is possible to see the image type. For some reason any "previous image" image continues to change its image type on the different loop iterations. In the current configuration, it is a 8-bit gray scale (as it should) for the 5 iterations 1 and pass then to an empty image of LGV. I don't understand why this is happening. I guess that's the reason that the optical flow vectors are not displayed correctly.

Any help would be greatly appreciated!

Thank you

Oscar.

The distribution of your image is messed up.  It must be remembered that they are pointers, not data.  You must use the current image from IMAQ copy of copy of the previous image instead of feeding in the shift register.  You probably have another image to the destination image when you convert your AVI image in grayscale.  Now, you convert the original image to AVI, so next time you read the file AVI it forces to match the format of the image (grey levels).

Bruce

Tags: NI Hardware

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