derasterize

Simple solution: feed the image to http://github.com/csdvrx/derasterize (You may need to edit the characters supported to recognize things like the spades, diamonds and hearts I see on the page) > So then we can loop over every permutation of background color, foreground color, and character and compare it to the image’s character and pick the one that has the lowest number of mismatched pixels - ideally 0. This is also the technique used in derasterize, even if we wanted to try funnier things, like a Hough transform to spots the circles (application: a bloom-filter like approach to try the things like ° o O just right where they are needed) or a FFT to isolate zones by grainyness and apply different criterias for a more perceptive approach (application: the Sixel lemur example has fine hair, very thin in pixels but important to keep if t

And for terminals that don't support sixel yet, sixel-tmux will let you see them: http://github.com/csdvrx/sixel-tmux For example with Windows Terminal: https://raw.githubusercontent.com/csdvrx/sixel-tmux/main/exa... OP, if you want to keep your current solution, check how going beyond unicode halfblocks can help: https://github.com/csdvrx/derasterize

Far far better than caca. But if you want a picture-perfect quality try instead mpv with a sixel output The subset of usable characters (glyphs) roughly defines how accurate the picture can be represented: if all you have is - and _ and you want to represent an horizontal pipe, it'll be ugly. Of course it's more complicated than that, but caca uses ascii, while chafa uses a larger unicode range. The example is illustrated in picture on https://github.com/csdvrx/derasterize where the left is the original basicidea.c using only unicode halfblocks, and the right has more candidate of different shapes. Derasterize lets you select the width of the range you want to use, to improve encoding time say for video - but ideally, you would be able to test that whatever font you are using contains the glyphs you want.

And also tysm @jart for derasterize https://github.com/csdvrx/derasterize, which was a great basis to work on, and helped me make sixel-tmux https://github.com/csdvrx/sixel-tmux We achieved textmode supremacy, and jart achieved binary-portability supremacy. There seems to be a pattern here :)

Not just sixels but she also has the most superior tool for rendering images as unicode blocks. https://github.com/csdvrx/derasterize

For better quality and hi color support, check https://github.com/csdvrx/derasterize Example in Windows Terminal: https://user-images.githubusercontent.com/49044530/102044900... Details on how it works in https://github.com/microsoft/Terminal/issues/448#issuecommen... , https://github.com/microsoft/Terminal/issues/448#issuecommen... and https://github.com/microsoft/Terminal/issues/448#issuecommen...