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Image processing algorithms in pure Go

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hello, I have a question: how to use your project to implement similarity comparison of two histogram images?

my result is below. ``` goos: linux goarch: amd64 pkg: test cpu: AMD Ryzen 7 3700X 8-Core Processor BenchmarkMyCrop-16 14307 79645 ns/op BenchmarkResizeCrop-16 134 8771603 ns/op ``` my test code...

Not sure that done all things right. #87 commit to this issue TODO: - add Border Rectangle without fill

same as https://docs.opencv.org/4.1.0/d2/de8/group__core__array.html#ga87eef7ee3970f86906d69a92cbf064bd

any chance to add an half-tone filter to produce images like : ![image](https://user-images.githubusercontent.com/1110398/59608147-b8444000-90e2-11e9-9f8b-21006a95d0e0.png) I'm currently looking to see how to compute such images and may give it a try, but...

hi, Thanks for this project. I'd like to request a feature to do lens distortions on parts of the image similar to http://www.imagemagick.org/Usage/distorts/#barrel thanks

Hi, I've observed a few failures in the test suite when running on AArch64: ``` ... === RUN TestRotate --- FAIL: TestRotate (0.00s) rotate_test.go:175: Rotate angle 45.0 at center, don't...

bug
help wanted

Does bild support for draw now? Strongly recommend add drawing module such as draw a simple rectangle on image.

help wanted
feature
good-first-issue

Gamma correction is among the things most often done wrong by graphics programming novices. It's almost as bad as missing scene-related color transforms and linear volume sliders in the average...