2.5.9: added VIFP1 metric

Author: zvezdochiot

CHANGELOG

@@ -1,6 +1,10 @@
 JPEG Recompress
 https://github.com/ImageProcessing-ElectronicPublications/jpeg-recompress
 
+2.5.9 "vifp1"
+
+    Added VIFP 1 layer metric.
+
 2.5.8 "neat"
 
     Neat adds up all values.

README.md

@@ -56,6 +56,7 @@ MPE         | `-m mpe`      | Mean pixel error (as used by [imgmin](https://gith
 PSNR        | `-m psnr`     | [Peak signal-to-noise ratio](https://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio)
 SSIM        | `-m ssim`     | [Structural similarity](http://en.wikipedia.org/wiki/Structural_similarity)
 MS-SSIM*    | `-m ms-ssim`  | Multi-scale structural similarity (slow!) ([2008 paper](http://foulard.ece.cornell.edu/publications/dmr_hvei2008_paper.pdf))
+VIFP1       | `-m vifp1`    | [The visual information fidelity (VIF)](http://live.ece.utexas.edu/publications.php) 1 layer.
 SmallFry    | `-m smallfry` | Linear-weighted BBCQ-like ([original project](https://github.com/dwbuiten/smallfry), [2011 BBCQ paper](http://spie.org/Publications/Proceedings/Paper/10.1117/12.872231) -> [LibSmallFry](https://github.com/ImageProcessing-ElectronicPublications/libsmallfry))
 SharpenBad  | `-m shbad`    | Sharpen discrepancies ([LibSmallFry](https://github.com/ImageProcessing-ElectronicPublications/libsmallfry))
 Correlation | `-m cor`      | [Correlation](https://en.wikipedia.org/wiki/Correlation)
@@ -72,14 +73,15 @@ SUMMARY     | `-m sum`      | `(ssim + smallfry + shbad + nhw) / 4` **DEFAULT**
 ```
 Trends:
 ```
-UM = 2.79 * sqrt(sqrt(1.0 / MPE)) - 1.54
-UM = 0.95 * sqrt(PNSR) - 4.97
-UM = 1.95 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.20
-UM = 1.50 * cor_sigma(cor_sigma(MS_SSIM)) + 0.06
-UM = 0.0643 * SMALLFRY - 5.86
-UM = 1.11 * SHARPENBAD - 0.06
-UM = 2.86 * cor_sigma(cor_sigma(COR)) - 1.38
-UM = 0.37 * sqrt(sqrt(1.0 / NHW)) - 0.39
+UM = 2.99 * sqrt(sqrt(1.0 / MPE)) - 1.70
+UM = 1.00 * sqrt(PNSR) - 5.32
+UM = 2.07 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.26
+UM = 1.59 * cor_sigma(cor_sigma(MS_SSIM)) + 0.01
+UM = 3.69 * cor_sigma(VIFP1) - 2.74
+UM = 0.0684 * SMALLFRY - 6.29
+UM = 1.17 * SHARPENBAD - 0.12
+UM = 3.03 * cor_sigma(cor_sigma(COR)) - 1.52
+UM = 0.40 * sqrt(sqrt(1.0 / NHW)) - 0.48
 
 cor_sigma(M) = 1.0 - sqrt(1.0 - M * M)
 ```

man/man1/jpeg-compare.1

@@ -1,19 +1,23 @@
-.TH "jpeg-compare" 2.5.8 "13 Jan 2023" "User manual"
+.TH "jpeg-compare" 2.5.9 "15 Jan 2023" "User manual"
+
 .SH NAME
 jpeg-compare
+
 .SH DESCRIPTION
 Compare two JPEG photos to judge how similar they are.
 The fast comparison method returns an integer from 0 to 99, where 0 is identical.
 PSNR, SSIM, and MS-SSIM return floats but require images to be the same dimensions.
+
 .SH SYNOPSIS
 jpeg-compare [options] image1.jpg image2.jpg
+
 .SH OPTIONS
 .TP
 \fB\-h\fR, \fB\-\-help\fR
 output program help
 .TP
 \fB\-m\fR, \fB\-\-method\fR [arg]
-set comparison method to one of 'fast', 'mpe', 'psnr', 'ssim', 'ms-ssim', 'smallfry', 'shbad', `cor`, 'nhw', 'ssimfry', 'ssimshb', 'sum' [fast]
+set comparison method to one of 'fast', 'mpe', 'psnr', 'ssim', 'ms-ssim', 'vifp1', 'smallfry', 'shbad', 'cor', 'nhw', 'ssimfry', 'ssimshb', 'sum' [fast]
 .TP
 \fB\-n\fR, \fB\-\-norm\fR
 UM scale metric
@@ -35,6 +39,7 @@ output program version
 .TP
 \fB\-\-short\fR
 do not prefix output with the name of the used method
+
 .SH EXAMPLES
 Do a fast compare of two images:
 .PP
@@ -50,6 +55,7 @@ Calculate SSIM:
 .PP
 .I
 jpeg-compare --method ssim image1.jpg image2.jpg
+
 .SH NOTES
 "Universal Scale" of metrics (UM):
   0.0
@@ -68,21 +74,23 @@ jpeg-compare --method ssim image1.jpg image2.jpg
 .PP
 Trends:
 
-  UM = 2.79 * sqrt(sqrt(1.0 / MPE)) - 1.54
-  UM = 0.95 * sqrt(PNSR) - 4.97
-  UM = 1.95 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.20
-  UM = 1.50 * cor_sigma(cor_sigma(MS_SSIM)) + 0.06
-  UM = 0.0643 * SMALLFRY - 5.86
-  UM = 1.11 * SHARPENBAD - 0.06
-  UM = 2.86 * cor_sigma(cor_sigma(COR)) - 1.38
-  UM = 0.37 * sqrt(sqrt(1.0 / NHW)) - 0.39
+  UM = 2.99 * sqrt(sqrt(1.0 / MPE)) - 1.70
+  UM = 1.00 * sqrt(PNSR) - 5.32
+  UM = 2.07 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.26
+  UM = 1.59 * cor_sigma(cor_sigma(MS_SSIM)) + 0.01
+  UM = 3.69 * cor_sigma(VIFP1) - 2.74
+  UM = 0.0684 * SMALLFRY - 6.29
+  UM = 1.17 * SHARPENBAD - 0.12
+  UM = 3.03 * cor_sigma(cor_sigma(COR)) - 1.52
+  UM = 0.40 * sqrt(sqrt(1.0 / NHW)) - 0.48
     cor_sigma(M) = 1.0 - sqrt(1.0 - M * M)
 
 .SH COPYRIGHT
  JPEG-Archive is copyright © 2015 Daniel G. Taylor
  Image Quality Assessment (IQA) is copyright 2011, Tom Distler (http://tdistler.com)
  SmallFry is copyright 2014, Derek Buitenhuis (https://github.com/dwbuiten)
  All rights reserved.
+
 .SH "SEE ALSO"
  jpeg-hash,
  jpeg-recompress,

man/man1/jpeg-hash.1

@@ -1,10 +1,14 @@
-.TH "jpeg-hash" 2.5.5 "14 Dec 2022" "User manual"
+.TH "jpeg-hash" 2.5.9 "15 Jan 2023" "User manual"
+
 .SH NAME
 jpeg-hash
+
 .SH DESCRIPTION
 Create a hash of an image that can be used to compare it to other images quickly.
+
 .SH SYNOPSIS
 jpeg-hash [options] image.jpg
+
 .SH OPTIONS
 .TP
 \fB\-h\fR, \fB\-\-help\fR
@@ -15,6 +19,7 @@ set fast comparison image hash size
 .TP
 \fB\-V\fR, \fB\-\-version\fR
 output program version
+
 .SH EXAMPLES
 .I
 jpeg-hash image.jpg
@@ -23,6 +28,7 @@ jpeg-hash image.jpg
  Image Quality Assessment (IQA) is copyright 2011, Tom Distler (http://tdistler.com)
  SmallFry is copyright 2014, Derek Buitenhuis (https://github.com/dwbuiten)
  All rights reserved.
+
 .SH "SEE ALSO"
  jpeg-compare,
  jpeg-recompress,

man/man1/jpeg-recompress.1

@@ -1,15 +1,19 @@
-.TH "jpeg-recompress" 2.5.8 "13 Jan 2023" "User manual"
+.TH "jpeg-recompress" 2.5.9 "15 Jan 2023" "User manual"
+
 .SH NAME
 jpeg-recompress
+
 .SH DESCRIPTION
 Compress JPEGs by re-encoding to the smallest JPEG quality while keeping perceived
 visual quality the same and by making sure huffman tables are optimized.
 This is a lossy operation, but the images are visually identical and it usually
 saves 30-70% of the size for JPEGs coming from a digital camera, particularly DSLRs.
 By default all EXIF/IPTC/XMP and color profile metadata is copied over,
 but this can be disabled to save more space if desired.
+
 .SH SYNOPSIS
 jpeg-recompress [options] image.jpg compressed.jpg
+
 .SH OPTIONS
 .TP
 \fB\-a\fR, \fB\-\-accurate\fR
@@ -31,7 +35,7 @@ output program help
 set the number of runs to attempt [6]
 .TP
 \fB\-m\fR, \fB\-\-method\fR [arg]
-set comparison method to one of 'mpe', 'psnr', 'ssim', 'ms-ssim', 'smallfry', 'shbad', `cor`, 'nhw', 'ssimfry', 'ssimshb', 'sum' [sum]
+set comparison method to one of 'mpe', 'psnr', 'ssim', 'ms-ssim', 'vifp1', 'smallfry', 'shbad', 'cor', 'nhw', 'ssimfry', 'ssimshb', 'sum' [sum]
 .TP
 \fB\-n\fR, \fB\-\-min\fR [arg]
 minimum JPEG quality [40]
@@ -71,6 +75,7 @@ output program version
 .TP
 \fB\-Y\fR, \fB\-\-ycbcr\fR [arg]
 YCbCr jpeg colorspace: 0 - source, >0 - YCrCb, <0 - RGB
+
 .SH EXAMPLES
 Default settings:
 .PP
@@ -121,6 +126,7 @@ Disable all output except for errors:
 .PP
 .I
 jpeg-recompress --quiet image.jpg compressed.jpg
+
 .SH NOTES
 "Universal Scale" of metrics (UM):
   0.0
@@ -139,21 +145,23 @@ jpeg-recompress --quiet image.jpg compressed.jpg
 .PP
 Trends:
 
-  UM = 2.79 * sqrt(sqrt(1.0 / MPE)) - 1.54
-  UM = 0.95 * sqrt(PNSR) - 4.97
-  UM = 1.95 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.20
-  UM = 1.50 * cor_sigma(cor_sigma(MS_SSIM)) + 0.06
-  UM = 0.0643 * SMALLFRY - 5.86
-  UM = 1.11 * SHARPENBAD - 0.06
-  UM = 2.86 * cor_sigma(cor_sigma(COR)) - 1.38
-  UM = 0.37 * sqrt(sqrt(1.0 / NHW)) - 0.39
+  UM = 2.99 * sqrt(sqrt(1.0 / MPE)) - 1.70
+  UM = 1.00 * sqrt(PNSR) - 5.32
+  UM = 2.07 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.26
+  UM = 1.59 * cor_sigma(cor_sigma(MS_SSIM)) + 0.01
+  UM = 3.69 * cor_sigma(VIFP1) - 2.74
+  UM = 0.0684 * SMALLFRY - 6.29
+  UM = 1.17 * SHARPENBAD - 0.12
+  UM = 3.03 * cor_sigma(cor_sigma(COR)) - 1.52
+  UM = 0.40 * sqrt(sqrt(1.0 / NHW)) - 0.48
     cor_sigma(M) = 1.0 - sqrt(1.0 - M * M)
 
 .SH COPYRIGHT
  JPEG-Archive is copyright © 2015 Daniel G. Taylor
  Image Quality Assessment (IQA) is copyright 2011, Tom Distler (http://tdistler.com)
  SmallFry is copyright 2014, Derek Buitenhuis (https://github.com/dwbuiten)
  All rights reserved.
+
 .SH "SEE ALSO"
  jpeg-compare,
  jpeg-hash,

man/man1/jpeg-zfpoint.1

@@ -1,15 +1,19 @@
-.TH "jpeg-zfpoint" 2.5.5 "14 Dec 2022" "User manual"
+.TH "jpeg-zfpoint" 2.5.9 "15 Jan 2023" "User manual"
+
 .SH NAME
 jpeg-zfpoint
+
 .SH DESCRIPTION
 Find ZF point of compress JPEGs by re-encoding to the smallest JPEG quality
 while keeping perceived visual quality the same and by making sure huffman tables are optimized.
 This is a lossy operation, but the images are visually identical and it usually
 saves 30-70% of the size for JPEGs coming from a digital camera, particularly DSLRs.
 By default all EXIF/IPTC/XMP and color profile metadata is copied over,
 but this can be disabled to save more space if desired.
+
 .SH SYNOPSIS
 jpeg-zfpoint [options] image.jpg zfpoint.jpg
+
 .SH OPTIONS
 .TP
 \fB\-a\fR, \fB\-\-accurate\fR
@@ -67,11 +71,13 @@ Default settings:
 .PP
 .I
 jpeg-zfpoint image.jpg zfpoint.jpg
+
 .SH COPYRIGHT
  JPEG-Archive is copyright © 2015 Daniel G. Taylor
  Image Quality Assessment (IQA) is copyright 2011, Tom Distler (http://tdistler.com)
  SmallFry is copyright 2014, Derek Buitenhuis (https://github.com/dwbuiten)
  All rights reserved.
+
 .SH "SEE ALSO"
  jpeg-compare,
  jpeg-hash,

man/man1/webp-compress.1

@@ -1,4 +1,4 @@
-.TH "webp-compress" 2.5.8 "13 Jan 2023" "User manual"
+.TH "webp-compress" 2.5.9 "15 Jan 2023" "User manual"
 
 .SH NAME
 webp-compress
@@ -12,6 +12,7 @@ All EXIF/IPTC/XMP and color profile metadata are not preserved!
 
 .SH SYNOPSIS
 webp-compress [options] image.[jpg|ppm] compressed.webp
+
 .SH OPTIONS
 .TP
 \fB\-c\fR, \fB\-\-no-copy\fR
@@ -30,7 +31,7 @@ output program help
 set the number of runs to attempt [8]
 .TP
 \fB\-m\fR, \fB\-\-method\fR [arg]
-set comparison method to one of 'mpe', 'psnr', 'ssim', 'ms-ssim', 'smallfry', 'shbad', `cor, 'nhw', 'ssimfry', 'ssimshb', 'sum' [sum]
+set comparison method to one of 'mpe', 'psnr', 'ssim', 'ms-ssim', 'vifp1', 'smallfry', 'shbad', 'cor', 'nhw', 'ssimfry', 'ssimshb', 'sum' [sum]
 .TP
 \fB\-n\fR, \fB\-\-min\fR [arg]
 minimum quality [1]
@@ -89,6 +90,7 @@ Disable all output except for errors:
 .PP
 .I
 webp-compress --quiet image.jpg compressed.webp
+
 .SH NOTES
 "Universal Scale" of metrics (UM):
   0.0
@@ -107,14 +109,15 @@ webp-compress --quiet image.jpg compressed.webp
 .PP
 Trends:
 
-  UM = 2.79 * sqrt(sqrt(1.0 / MPE)) - 1.54
-  UM = 0.95 * sqrt(PNSR) - 4.97
-  UM = 1.95 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.20
-  UM = 1.50 * cor_sigma(cor_sigma(MS_SSIM)) + 0.06
-  UM = 0.0643 * SMALLFRY - 5.86
-  UM = 1.11 * SHARPENBAD - 0.06
-  UM = 2.86 * cor_sigma(cor_sigma(COR)) - 1.38
-  UM = 0.37 * sqrt(sqrt(1.0 / NHW)) - 0.39
+  UM = 2.99 * sqrt(sqrt(1.0 / MPE)) - 1.70
+  UM = 1.00 * sqrt(PNSR) - 5.32
+  UM = 2.07 * cor_sigma(cor_sigma(cor_sigma(SSIM))) - 0.26
+  UM = 1.59 * cor_sigma(cor_sigma(MS_SSIM)) + 0.01
+  UM = 3.69 * cor_sigma(VIFP1) - 2.74
+  UM = 0.0684 * SMALLFRY - 6.29
+  UM = 1.17 * SHARPENBAD - 0.12
+  UM = 3.03 * cor_sigma(cor_sigma(COR)) - 1.52
+  UM = 0.40 * sqrt(sqrt(1.0 / NHW)) - 0.48
     cor_sigma(M) = 1.0 - sqrt(1.0 - M * M)
 
 .SH COPYRIGHT