X-Trans demosaic algorithms differences

Started 4 months ago | Discussions thread
OP sluggy_warrior Contributing Member • Posts: 891
Re: X-Trans demosaic algorithms differences

CAcreeks wrote:

I downscale an X-Trans JPG to 70% then back up to 100%, put it as an overlay on the original with "difference" mode. The amount of differences is rather small, mostly in sharp bright edges, and is similar to downscale-upscaling a Bayer image. I guess I can keep Hugin's downscale setting the same.

Cool test. What algorithm did you use for downsampling and upsampling?

Sinc (Lanczos 3) in GIMP, both for down and up, as I assumed that Hugin doesn't use anything fancy.

It's not the best that I'd like, I've seen better resizing from Flickr. It's on my to-do list to figure out a better scaling method (in Ubuntu). Here's where I tracked down the differences between Flickr and GPhotos scaling:

https://www.dpreview.com/forums/thread/4279519

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