Draw freehand on the container to Image Vision - are part of the Image

Hello people.

You want to do a random draw on the fly on a 8-bit grayscale image into a container of Vision.  I then want to merge this draw with the actual image.  I suppose that the draw is an overlay.  Vision has a superposition of merge command that requires RGB destination.  I then used the IMAQ extracted SingleColorPlane to extract the plan of the intensity of the RGB image so that I can return to the plan format unique (U8) use IMAQ ImagetoArray fx to get to a table.  I tried to extract a number of different types of aircraft, but do not see my line on the resulting table (which I display in a graph of intensity).  I don't see the original image.

Any thoughts on the best way to accomplish a merger of the draw and the original image?

Thank you

Don

I write an example showing my current best effort quick a solution non-Vision, not covered with this problem. This approach was mentioned in my previous post.  I will cross-post this in the forum LabVIEW also since it is a solution of pure-LabVIEW.  It is difficult for me to believe that we can not directly to these "overlay" information using NI Vision NI LabVIEW.

After the line drawn for all positions of the cursor (cursor) feather flying over the interpolation is required. I used the factor 10 and spline interpolation.

Drawing of the points on the graph of the intensity, rather than lines, did not work well, because with my code, I'm clearing missing events related to seize all slider positions.

Feel free to let me know if you can do better.

Sincerely,

Don

Tags: NI Hardware

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