Frans-Jan Wind

I have a grayscale 1 plane char stream. I'd like to (probably) multiply this stream with an object which will make the white whiter but will keep the black. I'd try the [jit.op @op + @val 1.] but this will also whiten the black parts. If someone can give me a direction to look I'd be thankful!

Hi list,
I have a grayscale 1 plane char stream. I'd like to (probably) multiply this stream with an object which will make the white whiter

making-white-whiter-in-grayscale

you want something like photoshop levels. the simple answer is to use the vizzie module MAPPR:

the more complicated answer: for matrix input use jit.charmap, for texture input use jit.gl.slab @file cc.colormap.jxs. You can patch together something to use as curve editor using the function object, and the bspline object from the Jasch objects package (installable via the Package Manager).

Just wow. It took me a while to understand the complicated answer, which is no understatement. But this solution is beautiful! Thank you.

Making White whiter in grayscale