Ditherlicious Help
Ditherlicious crushes images to pure 1 black/white 1 bit using dithering.
It is developed by Jonas Wagner. You can read more about it in this blog post.
Usage
Open an image by drag & dropping it onto the page or by clicking Open Photo.
Please note that the differences between the conversions can be subtle. You will need a decent monitor to appreciate them.
Black & White Conversions
Luminosity
Straight black and white conversion using the relative luminance values of the sRGB Primaries.
Y = 0.216R + 0.7162G + 0.0722B
Average
Conversion using the following coefficients:
Y = 0.333R + 0.333G + 0.333B
Red Filter
Conversion using the following coefficients:
Y = R
Green Filter
Conversion using the following coefficients:
Y = G
Blue Filter
Conversion using the following coefficients:
Y = B
Contrast
The contrast option increases the contrast of the image by moving the black and white points.
Exposure
The exposure slider increases the brightness of the image by multiplication in the linear space.
Dithering
The dithering algorithm used in this tool is stucki dithering. There are some additional hacks for dealing with the boundaries of the image but they are not perfect.
FAQ
Are my images uploaded to your server?
No! I respect your privacy. All of your images stay on your computer. They are never uploaded to any cloud or server.
Can I open RAW images using this app?
No, RAW images are not supported. The highest quality format you can use is 24-bit PNG. PNG images are also saved as PNG to minimize losses. If you need support for higher bit depths or RAW please have a look at the gmic plugin for the gimp.
Changelog
1.0.0 (2016-07-07)
- Initial release
Credits
Open Source Libraries
This software was built using the following open source components. I want to thank all of their authors for making my life easier and projects like this possible.
- babel
- babel-polyfill
- babel-preset-es2015
- babel-preset-react
- babelify
- bluebird
- canvas-to-blob
- chai
- chai-as-promised
- chai-spies
- console-polyfill
- datauri
- debounce
- exif-js
- grunt
- grunt-autoprefixer
- grunt-browserify
- grunt-contrib-compress
- grunt-contrib-connect
- grunt-contrib-copy
- grunt-contrib-cssmin
- grunt-contrib-jade
- grunt-contrib-uglify
- grunt-contrib-watch
- grunt-rsync
- grunt-sass
- grunt-shell
- jquery
- jstransformer-marked
- mocha
- node-sass
- sinon
- sinon-chai
- source-map-support
- sw-precache
- underscore
Fonts / Icons
Demo Image
The demo image is a scanning electron microscope image of a walnut leaf.
