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Commands tagged images from sorted by
Terminal - Commands tagged images - 9 results
mogrify -resize SIZE_IN_PIXELS *.jpg
2013-07-05 14:14:04
User: o0110o
-1

Batch resize all images to a width of 'X' pixels while maintaing the aspect ratio.

This makes uses of ImageMagick to make life easier.

convert image1 image2 -resize '400x300!' MIFF:- | compare -metric AE -fuzz '10%' - null:
2012-04-17 11:25:34
User: dooblem
2

Outputs the number of different pixels.

2 params to increase tolerance:

* thumbnails size

* fuzz, the color distance tolerance

See http://en.positon.org/post/Compare-/-diff-between-two-images for more details.

x=1024; y=32768; cat <(echo -e "P5\n$x $y\n255\n") <(dd if=/dev/sda1 bs=$x count=$y) > sda1.pgm
2012-03-06 03:09:16
Functions: cat dd echo
Tags: dd images pnm pgm
1

Keep width to a power of 2 to see patterns emerge. 512 is good. So is 4096 for huge maps.

PNM headers are super basic.

http://netpbm.sourceforge.net/doc/pbm.html

wget -nd -r -l 2 -A jpg,jpeg,png,gif http://website-url.com
composite -geometry 96x96+250+70 foreground.jpg background.jpg image.jpg
2011-09-04 16:55:51
User: carlosj2585
1

Compose 2 images (foreground.jpg with background.jpg) into 1 (image.jpg), the numeric parameters stablish the size of the foreground.jpg image (96x96) and the position x,y (+250+70) relative to the background.jpg image.

Images can be any format, jpg, png, bmp, etc...

jhead -autorot *
0

Digital cameras embed EXIF data into the images they create indicating which orientation the photo was taken in. Some viewers and editors are smart enough to read this, but many are not (and web browsers ignore it). jhead is one of not many tools available that can losslessly rotate jpeg images. This command reads the EXIF orientation of each image, and rotates it if necessary.

curl -s --compressed http://funnyjunk.com | awk -F'"' '/ '"'"'mainpagetop24h'"'"'/ { print "http://funnyjunk.com"$4 }' | xargs curl -s | grep -o 'ht.*m/pictures/.*\.jpg\|ht.*m/gifs/.*\.gif' | grep "_......_" | uniq | xargs wget
2011-07-21 15:57:21
User: laniner
Functions: awk uniq xargs
0

If your version of curl does not support the --compressed option, use

curl -s http://funnyjunk.com | gunzip

instead of

curl -s --compressed http://funnyjunk.com
find -iname '*.jpg' -print0 | xargs -0 feh -d
2011-04-10 15:28:14
User: hendry
Functions: find xargs
Tags: picture images
2

So you are in directory with loads of pictures laying around and you need to quickly scan through them all

feh -d -F -z -D 1 *
2010-02-26 11:06:11
User: ivanatora
-1

-d Draw the filename at the top-left of the image

-F fullscreen

-z randomize

-D 1 - delay 1 second between changing slides

This command will show images in subdirectories as well.