Inverse colour


    Apr 21 2006 | 7:04 pm
    Hi all,
    Just wondering the best way to inverse the colours of a webcam feed coming out of jit.qt.grab.
    Thanks Jonathan

    • Apr 21 2006 | 7:12 pm
      jit.op @op ~
      ~ is the bitwise complement operator meaning that it will take 255 and make it 0 or for the 8-bit color value 00011100 it will produce 11100011.
      best, wes
    • Apr 21 2006 | 7:25 pm
      > jit.op @op ~
      Yes, that's probably the fastest, but just for reference of other ways to handle color processing check out the following.
      or jit.op @op !- @val 1. or jit.scalebias @bias 1. @scale -1. or jit.charmap
      -Joshua
    • Apr 21 2006 | 7:37 pm
      Thanks Wes for the quick reply, knew it would be something straight forward!
      Cheers also Joshua for the pointers. I've got a deadline in a few weeks, and am on a steep learning curve with this stuff...expect a few more newb questions in the near future! ;-)
      Jonathan