Re: [CinCV] Colour correction, quantisation/rounding errors and display; some findings.

2012-03-03 Thread Herman Robak
På Sat, 03 Mar 2012 13:07:16 +0100, skrev Herman Robak : The YUV effect plugin fares better, in YUV mode. And even better(er) in RGB FLOAT mode, though it doesn't look perfect here(*) You may see it more clearly in the "selftest" I'm attaching here, where I have added another video track on th

Re: [CinCV] Colour correction, quantisation/rounding errors and display; some findings.

2012-03-03 Thread Herman Robak
På Sat, 03 Mar 2012 12:46:28 +0100, skrev Herman Robak : The hue/saturation effect has bad quantisation artifacts when the colour model is YUV and the sliders are set to anything but unity. I have attached a test project to demonstrate the banding noise; it's glaringly obvious when you view it

[CinCV] Colour correction, quantisation/rounding errors and display; some findings.

2012-03-03 Thread Herman Robak
I'm late with my homework for tomorrow's meeting, so I'm giving you a quick summary of what I have come up with so far. The hue/saturation effect has bad quantisation artifacts when the colour model is YUV and the sliders are set to anything but unity. I have attached a test project to demonstra