The Artifacts:

Source images:


The 3-Way  (all 1/3 weights) morphing:


The 0.8, 0.1, 0.1 weight morphing (It will look similar to the 1st source image)


The 0.1, 0.8, 0.1 weight morphing (It will look similar to the 2nd source  image)


The 0.1, 0.1, 0.8 weight morphing (It wil look similar to the 3rd source image)



The control points we choose mainly forcus on the foregournd flowers.  Thus some dimmed background (averaged background) side-effect can be seen.