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[ Source: jpegjudge  ]

Package: jpegjudge (0.0.2-5)

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determine which of two given jpegs (same size) is the original

Try to determine which same picture was saved at a higher quality, even if the picture was saved at low quality and later at a higher quality.

By a statistical analysis over the quantization table stored in a jpeg one could probably deduce the quality which the picture was saved (i.e. this particular save), but it in no way says anything about the picture quality itself (i.e. whether it has ever been saved at lower quality before since its creation). For example, one might have saved a jpeg picture at low quality, and later saved at a higher quality, yet the information lost during the first save can't be restored.

Tags: Implemented in: C, User Interface: Command Line, Role: role::program, scope::utility, Purpose: Comparing, Works with: Image

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Download jpegjudge

Download for all available architectures
Architecture Package Size Installed Size Files
alpha (unofficial port) 18.9 kB97.0 kB [list of files]
amd64 19.9 kB49.0 kB [list of files]
arm64 19.4 kB96.0 kB [list of files]
armel 18.3 kB40.0 kB [list of files]
armhf 18.1 kB40.0 kB [list of files]
hppa (unofficial port) 19.5 kB44.0 kB [list of files]
i386 18.6 kB44.0 kB [list of files]
ia64 (unofficial port) 21.1 kB47.0 kB [list of files]
m68k (unofficial port) 18.1 kB40.0 kB [list of files]
mips64el 19.0 kB97.0 kB [list of files]
ppc64 (unofficial port) 19.2 kB97.0 kB [list of files]
ppc64el 20.7 kB97.0 kB [list of files]
riscv64 18.8 kB41.0 kB [list of files]
s390x 18.6 kB44.0 kB [list of files]
sh4 (unofficial port) 19.3 kB96.0 kB [list of files]
sparc64 (unofficial port) 18.8 kB1,057.0 kB [list of files]
x32 (unofficial port) 19.8 kB48.0 kB [list of files]