### Pyramid Blending with Single input and Non-Vertical Boundary

Hi All,

Here is the input image.

Say you do not have the other half of the images. Is it still possible to do with Laplacian pyramid blending?

I tried stuffing the image directly into the algorithm. I put weights as opposite triangles. The result comes out the same as the input.
My another guess is splitting the triangles. Do gaussian and Laplacian pyramid on each separately, and then merge them.

But the challenge is how do we apply Laplacian matrix on triangular data. What do we fill on the missing ~~half?~~half? I tried 0. It made the boundary very bright.

If pyramid blending is not the best approach for this. What other methods do you recommend me to look into for blending?

Any help is much appreciated!