Digital Light & Color

This question is definitely not urgent. It's about Compositing/blending images. Below is a blend of two images which I achieved with PWP Composite and a manually-adjusted gradient mask. It worked fine as far as it went.

But there are other modes of blending, one from Sean McHugh's Cambridge in Colour (https://www.cambridgeincolour.com/tutor ... ftware.htm). Would it be possible and/or desirable to introduce something like this (e.g. maybe via some high pass/low pass variation)?

Apparently that latter apple/orange blend was done in an open-source Emblend code: https://en.wikipedia.org/wiki/Enblend

Here is the original paper describing the technique:

http://cs.nyu.edu/~fergus/teaching/comp ... line83.pdf