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.
mogrify can be used like convert. The difference is that mogrify overwrites files: http://www.imagemagick.org/www/mogrify.html Of course, other source colors can be used as well.
Just starting to get in love with mogrify.
It's just because the original command was not working on version's 6.7.7-10.
This command requires the imagemagick libraries and will resize all files with the .jpg extension to a width of 1024 pixels and will keep the same proportions as the original image.
Removes all png files whose geometry is not 280x190 pixels
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...
Create transparent image to use as icon, watermark for other images, etc.
You can use the -format switch to get the size of the image. Replace "logo:" with your image. Show Sample Output
Now try this. Ones you see small cross arrow, double click on any window you like to make a screenshot "selectively".
You can get the mean value for the colours in an image. Then you can determine, in general, how dark or bright is the image and run some other actions based on that. I'll recommend to readjust the brightness of the images using +sigmoidal-contrast option of imagemagick convert command. Show Sample Output
Extract a color palette from a image useful for designers.
Example usage:
extract-palette myawesomeimage.jpg 4
Where the first argument is the image you want to extract a palette from. The second argument is the number of colors you want.
It may be the case where you want to change the search space. In that case, change the -resize argument to a bigger or smaller result. See the ImageMagick documentation for the -resize argument.
Show Sample Output
requires imagemagick. -background transparent is of course optional. Show Sample Output
Resizes all images in the curent directory to x resolution. It is better than `mogrify -resize *.jpg` because of independence from extension of image (e.g. .jpg and .JPG) (: Show Sample Output
Deletes unneeded files after every step and allows to use a color other than yellow at the last position.
convert -crop 51x34 +repage http://www.google.com/images/flags/sprite_flag-50.png flag.png
- Backup data before reszie as it over write original -To preserve aspect ratio remove !
Requires ImageMagick to be installed. This command was stolen from @climagic on Twitter. Probably a duplicate of command below, but this command uses slightly higher quality. http://www.commandlinefu.com/commands/view/707/compress-images-using-convert-imagemagick-in-a-bulk
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