Add image dithering filter to build low-tech websites

[rdelaage]

It would be great to be able to select a filter to dither image and reduce final website size in image processing. The lowtech magazine use a filter to dither images. We could have the same in hugo by using this library and it could be selecting in image processing filters.

[bep]

We could add this if we could do it by not adding another dependency. I think the standard library has a simple dithering filter, which I think should be good enough for this.

[diantanjung]

I want to solve this issue

[diantanjung]

hi @bep
Is there any documentation for debugging and testing for hugo project? I have changed in filter.go add add some file. But after I run mage install, the change does not work. Is I miss something?

Is any cache mechanism in hugo for last code in shortcode or layout?

[diantanjung]

Ok, Please explain the features of the dithering image. If any input and output images will be very helpful.

[bep]

I don't have any stake in this other than that I'll most likely end up maintaining what's added. But I was originally thinking about using draw.FloydSteinberg ... but I haven't researched this.

https://golang.org/pkg/image/draw/

[diantanjung]

disintegration/gift#25

[diantanjung]

hi bep, Could I use draw.FloydSteinberg (but I modified it) to implement gift.Filter?
Or Is there another approach?

thanks

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