Legacy ImageMagick Discussions Archive

Stupid me, I shoot in the original exif data somewhere further down this script, and that replaces the 400ppi setting I wanted...

Hi All, I'm about to run a batch on converting 300ppi tiff files to a bunch of jpg's at 400ppi, but somehow that doesn't work for the following command: convert -units PixelsPerInch input.tif -quiet -gravity West -crop 51.0000x100%+0+0 -quality 95 -unsharp 0.8x1.1+0.8+0 +profile 8bim -density 400 ...

Hi all, I think it should be possible to use image ImageMagick to detect cropping errors, by finding image edges that are nog continuous. We record our images on a black background, and when an cropping error occurs (Photoshop crop and straighten), some piece of the recorded element breaks the ...

Does Anyone know a trick to detect color moire blobs in images like the attachment above?

Best,
Jon

For photoshop to respect the density set by imagemagick, we use the

+profile "8bim"

option

Hi all, I would like to know a trick to detect color moiré in scanned documents of newspapers and alike. I've attached two cropped examples (tif) with one slide with small dots in green and purple, and the other slide with bigger dots. I'd like to only detect images with colordots above a certain ...

The hint by Anthony gave me excellent results, after little tweaking of the treshold, I could even pick out the images with just some clipped pixels. The basic script I wrote around this is the following: #!/bin/sh # usage: find . -type f -name "*.tif" -a ! -name ".*" | while read i ; do clipping ...

Hi list members, This is my first question on the forum, so spare me ;-) I want to write an bash script, that uses imagemagick to find overexposed images in a pile of about 10.000. Can anyone point me in the right direction? I understand that we have luminosity and RGB histograms, what would be best ...