Translations:Archive:Kdenlive/Manual/Effects/Alpha manipulation/Color Selection/35/en

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Specifies in which of the three color spaces (RGB, ABI, HCI) the delta controls will work. Both ABI and HCI are separated luma/chroma. HCI is a cylindrical "Hue Chromacity Intensity" space, and ABI is a cartesian version thereof. Both suffer from chroma subsampling, and will give less sharp results than RGB. Note:HCI is slow, because it has to calculate atan2() and hypot() for each pixel.

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