Photo Filtering

cynthiaxhua

Hi,

I am looking for a library - or some other way - of applying Instagram-like filters to an image. Specifically, I would like to apply image filters that make an image look artistically retro or vintage. Any suggestions for how to achieve this (via library or other means)?

TfGuy44

https://processing.org/reference/filter_.html https://processing.org/reference/tint_.html

jeremydouglass

(Very belatedly adding a bit more information here.)

Processing and photo filtering:

1. For stylization, use filter() or PImage.filter() arguments such as THRESHOLD, INVERT, POSTERIZE, and BLUR etc.: https://processing.org/reference/filter_.html https://processing.org/reference/PImage_filter_.html

   

2. For color, use tint(): https://processing.org/reference/tint_.html

   

3. For color separating the R G B channels, use red() green() blue() -- although you can again use tint(), see: https://forum.processing.org/two/discussion/18999/channel-shifting-video

4. For specifying how to process the pixels of an image (e.g. sharpening, pointillism), see the Images and Pixels Tutorial: https://processing.org/tutorials/pixels/

   

5. For advanced effects (e.g. edge detection, or pixelation), use a shader -- see the PShader Tutorial: https://processing.org/tutorials/pshader/

   

6. For multiple different filter effects, see this sketch by @cameyo: https://forum.processing.org/two/discussion/13525/convolution

   

7. For an example of working out a specific filter, see this recent sketch by @grumo implementing a duotone process: https://forum.processing.org/two/discussion/19476/monotone-duotone-image-filter