Overlay image with transparent background - images of different sizes

[BonbonBLou]

Hi guys, 

I'm new to using overlay functions and I'm not sure how to do what I'm trying, so wanted to ask for some help/advice.

I have a feed coming in from a Kinect sensor, and I want to overlay a small image over the top. The image I want to overlay is small and so I only want it to cover part of the camera feed. It also has some transparency on the smaller image, which I would like to have in my overlay.

I have been looking at the overlay VIs, and found one called IMAQ Overlay bitmap - but I think that a bitmap would not have transparency so I would end up with a white square background on the image I'm trying to overlay on my camera feed.

Is there an easy way to do what I need? 

Thanks in advance,

Lou

[Andrey_Dmitriev]

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@vascibean wrote:

I have been looking at the overlay VIs, and found one called IMAQ Overlay bitmap - but I think that a bitmap would not have transparency so I would end up with a white square background on the image I'm trying to overlay on my camera feed.

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Yes, you can use transparency:

Result:

Andrey.

[BonbonBLou]

Hi there,

I've been trying to copy what you've got here but I'm still having a few problems. 

Below I have attached an example of one of the images I want to import with transparency. However, when I put that image though the IMAQ VI's it comes out looking something like this.

 

This is obviously making it come out wrong when I try and merge the images.

Any suggestions that could fix the problem?

I've attached the VI I've been using to try and get it working,

Lou

[Andrey_Dmitriev · Accepted solution]

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@vascibean wrote:

 I want to import with transparency. 

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The following kb should be helpful for you:

Community Admin Note:  The article link has been removed due to invalid information.

Andrey.

[BonbonBLou]

Brilliant thank you!

That second link was really useful  - I managed to get my image overlaying properly and I can not get started with getting my images on the camera feed.

The first was also useful, I think I might experiment and see what they look like as .gifs as that might suit my needs better.

Thanks again!