add --lut-hue-sat option when lut is used

pushd · Apr 16, 2024 · a70cf9c · a70cf9c
1 parent 120d6c6
commit a70cf9c
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/options/processing_options.go b/options/processing_options.go
@@ -758,9 +758,9 @@ func applyDitherOption(po *ProcessingOptions, args []string) error {
 			case "nc":
 				po.Dither.NormalizeContrast = true
 			case "llab13":
-				po.Dither.LUTFile = "lab_13_hack.interpol_clarabel.npy"
+				po.Dither.LUTFile = "lab_13_hack.interpol_clarabel"
 			case "lrgb13":
-				po.Dither.LUTFile = "rgb_13.interpol_clarabel.npy"
+				po.Dither.LUTFile = "rgb_13.interpol_clarabel"
 			default:
 				if err := maybeParseNumericDitherOptions(po, arg); err != nil {
 					return err

diff --git a/processing/dither.go b/processing/dither.go
@@ -135,7 +135,9 @@ func shellOutDither(inFile string, po *options.ProcessingOptions) error {
 		cmdArgs = append(cmdArgs, "--hull-project")
 	}
 	if len(po.Dither.LUTFile) > 0 {
-		cmdArgs = append(cmdArgs, "--lut", fmt.Sprintf("lut_dither/%s", po.Dither.LUTFile))
+		cmdArgs = append(cmdArgs, "--lut", fmt.Sprintf("lut_dither/%s.npy", po.Dither.LUTFile))
+		// the precomputed hue-sat, a speed optimization, is in the base dir
+		cmdArgs = append(cmdArgs, "--lut-hue-sat", fmt.Sprintf("%s.hue_sat", po.Dither.LUTFile))
 	}
 	if po.Dither.LUTBlue {
 		cmdArgs = append(cmdArgs, "--lut-blue")