Simple script for resize, crop and optimize jpg Post: 303025722

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Top Forums Shell Programming and Scripting Simple script for resize, crop and optimize jpg Post 303025722 by danjde on Saturday 10th of November 2018 11:39:29 AM

11-10-2018

Registered User

Simple script for resize, crop and optimize jpg

Hi Friends,
I'm trying to create a script that allows me to recursively resize, crop (holding the center of the image) and optimize images jpg, jpeg, png for a specific folder and subfolder with the ability to exclude certain folder and its subdirectory.

Again, I should to do with this script:

1) exclude images under a certain KB size
2) exclude images previous a certain date
3) exclude images in specific folders or sub-folders
4) resize images to precise height (400px for example)
5) crop images (gravity center) transforming into the square image with each side by 400px
6) optimize the image compression ratio

Code:

for f in `find . -name "*.jpg"`
do
    convert $f -resize x400\> $f.resized.jpg
done

then crop (gravity center) and optimize the result images

Code:

for f in `find . -name "*.jpg"`
do
    convert $f -gravity center -crop 400x400+0+0 -quality 50% $f.resized.jpg
done

But still I don't know how exclude file for size or folder and eventually how to merge the whole in a single script
I'm not a scripting expert, so I ask you if you can help me.

danjde

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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)

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