I've got two YUV images (YUV 420 SP), which have been loaded in fragment shader as textures.

These textures are having an overlapping area.

Now, I am trying to blend these two textures such that there should not be any difference visible in the brightness over the overlapping area. (Basically stitching the images)

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• Can you suggest any method on how I can mix/blend/stitch these two images.
• I have come across the concept of Alpha Masking in OpenCV. I am not sure how it is applicable in OpenGL. Also, since I am using YUV images, which are loaded as textures, as R and RG component (for Y and UV), and further converting it to RGB Color space in the fragment shader.

Note: I am not considering any geometrical alignment for now. I know after the blending/stitching the image will not quite good looking as the images are not oriented or placed properly. My question is only regarding the photometric/color alignment on how I can handle the overlapping area.