Reduce image size and filter?

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1

I’m working with a physically-based rendering image (HDR, units of radiance or irradiance in an RGB model) and I would like to create an unsharp mask from it, reducing the size and applying a box filter. I am not seeing an obvious way of doing this. Am I missing something? Or should I just proceed to write my own? (Sigh.) I do have an example to work from, but these things are fiddly and it might take some effort.

2

I would expect that functions from the Images package should be able to do this, see e.g. ImageFiltering.jl · ImageFiltering and Cropping, Resizing and Rescaling · JuliaImages.

3

As usually, there would be more that one package to do something in Julia. One of these (which I never used) is the OpenCV.jl Julia wrapper.

5

Thanks. Unfortunately, with the exception of ImageFiltering, most of those libraries do not work with physical units. There are hints that OpenCV does (at least, it offers HDR) but I can’t quickly find out for sure.

Thanks for the replies, anyway.