superimposing 2 images

[bikekowal]

Hi,

I would like to refresh this thread. I used MixPicture4.vi and modified it a little bit. I want to mix a normal image with binary image. Unfortunately I always get a black image as a result. I checked this method numerically in Matlab and it seems to work correctly. Before mixing I have to multiply the binary image by 255 but it doesn't change anything. Any ideas?

[tst]

The top part in your code (the one without IMAQ code) seems to work fine - if I give it a two-color BMP and an image (I actually used a PNG, but that shouldn't make a difference) it merges the two together, making the black parts darker and the white parts lighter.

Make sure your images are exactly the same size. If that doesn't help, upload some sample images and explain exactly what you expect to happen and what actually happens.

[bikekowal]

Thanks for reply. Both images are the same size. What I want to achieve is an image that is a fusion of binary image of thz image with vis image. Both images are attached. The problem is, as I suppose in the connection between IMAQ and the rest of the code. 

[tst]

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@bikekowal wrote:

What I want to achieve is an image that is a fusion of binary image of thz image with vis image.

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I don't know what that means. There can be any number of ways to overlay the two images. You need to add more details than that. Maybe use a graphics editor to create a sample result. Paint.NET is a good example of a free and simple editor.

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The problem is, as I suppose in the connection between IMAQ and the rest of the code. 

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Then maybe you should get rid of one of them. If it all can be done using the standard picture control VIs, I would suggest keeping that.

[bikekowal]

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@tst wrote:

Then maybe you should get rid of one of them. If it all can be done using the standard picture control VIs, I would suggest keeping that.

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I don't understand. What I want to do is superimpose two images - binary image (which is an THz image after thresholding) and normal image (from vis camera). The problem is that I get a black image - probably because all of pixel values in binary image are 0 or 1 and in normal image - from 0 to 255. That is why I multiply binary image by 255. Still, this doesn't work. It works in Matlab perfectly but in LabView there is some problem I cannot solve...

[tst]

This is what I get when I run the top part of your code:

I can't comment on the IMAQ code since I don't have it installed.

[bikekowal]

So I guess you don't have VDM? The problem is in the bottom code line... anyone?