Thomas Singh January 9, 2018 Share January 9, 2018 Can someone explain Color Matrix to me? Link to comment Share on other sites
Jussi Rovanperä January 9, 2018 Share January 9, 2018 It's linear algebra, a 3x3 matrix multiplication, that will transform 3 values into another 3 values. Typically the color matrixes are color space or color gamut transformations, like RGB-to-XYZ or XYZ-to-RGB transformations. So if you want to transform color from one RGB gamut to another RGB gamut, you would use 2 matrixes: rgb1-to-XYZ and XYZ-to-rgb2. This is just a super simplified explanation... 1 1 Link to comment Share on other sites
Thomas Singh January 12, 2018 Author Share January 12, 2018 Does that mean a 3x3 color matrix transformation is what happens when you use a technical LUT to go from a color space to another? Link to comment Share on other sites
Jussi Rovanperä January 12, 2018 Share January 12, 2018 A technical LUT that transforms the color space is created by running values thru a matrix, and then writing the results to a LUT. 1 1 Link to comment Share on other sites
Jussi Rovanperä January 12, 2018 Share January 12, 2018 This is in Fusion: First node LUTcubecreator created a HALD pattern (the color grid) Second node applies a color matrix (in this case just a unit matrix that does nothing) Third node analyzes what has changed in the HALD pattern and writes the LUT file. 1 Link to comment Share on other sites
