10-27-2017
Looking at the overly complicated (and erroneous) script that you posted, making use of the proposals in the handful of your recent threads (none which you neither commented nor thanked, BTW) seemingly pertaining to the same topic - why don't you show the underlying problem and all the input data instead of asking a little question here and a tiny puzzle there? People in here might come up with a consistent proposal that hits the bull's eye.
These 3 Users Gave Thanks to RudiC For This Post:
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LEARN ABOUT DEBIAN
puzzle-diff
PUZZLE-DIFF(1) PUZZLE-DIFF(1)
NAME
puzzle-diff - Compare pictures with libpuzzle
SYNOPSIS
[-b <contrast barrier for cropping>] [-c] [-C <max cropping ratio>] [-e] [-E <similarity threshold>] [-h] [-H <max height>] [-l <lambdas>]
[-n <noise cutoff>] [-p <p ratio>] [-t] [-W <max width>] <file 1> <file 2>
DESCRIPTION
puzzle-diff compares two pictures and outputs the normalized distance.
Try puzzle-diff -h for more info.
EXAMPLES
Output distance between two images:
$ puzzle-diff pic-a-0.jpg pics-a-1.jpg
0.102286
Compare two images, exit with 10 if they look the same, exit with 20 if they don't (may be useful for scripts):
$ puzzle-diff -e pic-a-0.jpg pics-a-1.jpg
$ echo $?
10
Compute distance, without cropping and with computing the average intensity of the whole blocks:
$ puzzle-diff -p 1.0 -c pic-a-0.jpg pic-a-1.jpg
0.0523151
AUTHORS
Frank DENIS libpuzzle at pureftpd dot org
SEE ALSO
libpuzzle(3), puzzle_set(3)
2012-05-09 PUZZLE-DIFF(1)