Color Specific Hue/Saturation from Photoshop to iOS

BradLarson / GPUImage

An open source iOS framework for GPU-based image and video processing

http://www.sunsetlakesoftware.com/2012/02/12/introducing-gpuimage-framework

BSD 3-Clause "New" or "Revised" License

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Color Specific Hue/Saturation from Photoshop to iOS #2334

Open noranecoco opened 8 years ago

noranecoco commented 8 years ago

I'm trying to use GPUImage to map this filter. Please note, I need help mapping the color (Blues) specific (note: NOT Master, just Blues) photoshop element to iOS.

Does anyone know how to manipulate a CIFilter or GPUImage class to get the photoshop effect below in iOS?

brandonscript commented 8 years ago

I don't think there are any filters out of the box that let you manipulate the HSL of one color channel. That said, it would be relatively simple to edit each of the filters to just take one color channel, then add a parameter to (optionally) take that channel in the interface.