Legacy ImageMagick Discussions Archive

Excellent! I have tried with some photos and it's true that the colors are preserved. Tonight I will pick some of the photos that had very poor results with Photoshop's autotone and see what happens. Thank you.

Can Visipics be used in a collection of 70000 images or would it crash, or take many days to finish?

I work with hundreds of photos, all of them human portraits and human bodies. Many of them have wrong levels (poor contrast). If you take a look a their histograms you can see that the left end (shadows) is not filled, or maybe the right end (lights) or even both ends. I have made a script with ...

I've tried with auto-level but the correction of the images is too subtle, almost unnoticiable. I'm using Photoshop to manually correct oversaturated photos. What does that "-modulate 100,80,100" command do? Does it magically correct oversaturated images or does it affect all images?

I'm using this command for autocorrection of levels in photos. The problem is that, in many cases, the colors get oversaturated. For instance, the color of the bodies turns like red. Is there a way to prevent this? Could it be that -normalize corrects levels with too much strenght? Maybe this is not ...

I don't know if Imagemagick is able to do this. If it isn't, I'd appreaciate if you tell me of any program that is designed for what I need. What I'd like is to provide some 2D vector objects, scaled with their real dimensiones in .ai or .eps format, for instance, and another larger vector object ...

I use normalize to correct levels in images. Then, I'd like to compare the original image with the processed image and have a numerical string in a text file that shows how different both images are, so as to know if the correction was strong or subtle. I've been trying with the compare command and ...

Look, this is a test image with the two histograms (left: Photoshop, right: ImageMagick). None of both provides lots of detail but with the one created by Photoshop you can at least see something. The histogram generated by Imagemagick is completelly useless since the only thing you can figure out ...

For the same image (a photo of a person on white background) I get this histogram in Photoshop (left) and this one with ImageMagick (right). Why so few detail with ImageMagick? I barely get any info from that with many images. Is there a way to have a more sensitive histogram? Maybe generating a ...

Hi. How's the code to create a histogram in black and white, but pure black and white, that is a 2-color image, not greys. Thanx.

Using my script what I try to avoid is that all images are converted, even if there's almost no change applied. Only those that need adjustments, based on the rules I define, will be processed.

Oh, I see. Now I understand. Tested and working :) Thanx. impath=d:\imagemagick image= z:\lightcorrection.jpg runwait, %comspec% /c %impath%\convert.exe %image% -colorspace Gray -define histogram:unique-colors=false histogram:z:\histo.png ,,hide runwait, %comspec% /c %impath%\convert.exe %image ...

I don't get it to work :( Look, with minima I get good results. If you try with these images, you can see how it reports 0 with correct.jpg, contrast.jpg and lightcorrection.jpg, but it reports 1 with darkcorrection.jpg and bothcorrection.jpg, because they lack blacks, so that's fine. However, with ...

Reading the docs, I've found the maxima parameter. Now, what's the max value? 255?

Ok, I've reduced the value to 0.01 and now it's working. However, it seems this is only for shadows. I've tried with some images and I only get 1 with images that lack blacks, but with images which are dark and lack in the lights end, I always get 0. Any idea?