So I am troubled about how to implement image stitching, I thought OpenCV will be useful in this since I found there is a function for this effect, but OpenCVforUnity not providing this function.
If I want to stitching a ground of images, how should I do??
Hello, i dont know if I’m understanding what you mean exactly…
You mean to merge? to connect 2 images so it seems is only 1 image? or what?
Unity is not a Image editor. You should use something like photoshop for this, and import the final result to Unity
Yes, unfortunately I bought the asset OpenCVForUnity and was disappointed by this informatin that the author did not include the stitching module into the asset 
Therefore there is necessary to stitch images using own methods. I will try to do it. If You already know how to do it then please answer here.