correct PSNR metric

Cristy · Cristy · commit 6d6e818bb3d6 · 2025-04-13T18:18:46.000-04:00
diff --git a/magick/compare.c b/magick/compare.c
@@ -1465,9 +1465,6 @@ static MagickBooleanType GetPeakSignalToNoiseRatio(const Image *image,
         distortion[BlackChannel]=fabs(-10.0*MagickLog10(PerceptibleReciprocal(
           distortion[BlackChannel])))/48.1647;
     }
-  if (fabs(distortion[CompositeChannels]) >= MagickEpsilon)
-    distortion[CompositeChannels]=fabs(-10.0*MagickLog10(PerceptibleReciprocal(
-      distortion[CompositeChannels])))/48.1647;
   return(status);
 }
 

Original file line number	Diff line number	Diff line change
`@@ -1465,9 +1465,6 @@ static MagickBooleanType GetPeakSignalToNoiseRatio(const Image *image,`
`1465`	`1465`	`distortion[BlackChannel]=fabs(-10.0*MagickLog10(PerceptibleReciprocal(`
`1466`	`1466`	`distortion[BlackChannel])))/48.1647;`
`1467`	`1467`	`}`
`1468`		`- if (fabs(distortion[CompositeChannels]) >= MagickEpsilon)`
`1469`		`- distortion[CompositeChannels]=fabs(-10.0*MagickLog10(PerceptibleReciprocal(`
`1470`		`- distortion[CompositeChannels])))/48.1647;`
`1471`	`1468`	`return(status);`
`1472`	`1469`	`}`
`1473`	`1470`