Compare in ImageMagick

_olq · Post by **_olq** » Thu Oct 09, 2014 5:13 pm

Hi all,

Is there a possibility to use the tool 'compare' contained in the 'ImageMagick' through Switch tool 'Execute command'? I did some tests with the command line and it works well.

I don't know how to indicate two input files to be able perform the operation.

I would like to make it like this:

'Input folder (with files to compare)' -> compare -> output folder (with file comparison)

Thanks in advance,

Aleksander

gabrielp · Post by **gabrielp** » Thu Oct 09, 2014 5:50 pm

_olq wrote: I don't know how to indicate two input files to be able perform the operation.

I don't know much about ImageMagick apart from using the PHP library. But if you figure out how to specify the input files in command line, you could probably define some temporary files (or static ones on your filesystem) using the File class. Once those temporary paths are tied to a variable, I imagine you could pass that into ImageMagick. Hope that helps

_olq · Post by **_olq** » Mon Oct 13, 2014 11:39 am

gabrielp wrote: you could probably define some temporary files (or static ones on your filesystem) using the File class. Once those temporary paths are tied to a variable, I imagine you could pass that into ImageMagick.

Hi Gabriel,

What you say makes sense, but I have no idea how to do it

Could you show an example?

dkelly · Post by **dkelly** » Mon Oct 13, 2014 3:00 pm

I wrote this configurator for Imagemagick's compare

https://www.dropbox.com/s/dihwpwv8d48ah ... cript?dl=0

Dwight Kelly

Apago, Inc.

_olq · Post by **_olq** » Tue Oct 14, 2014 10:21 am

I'm pleasantly surprised, it works great.

Good job Dwight, thank you very much!

_olq · Post by **_olq** » Tue Oct 14, 2014 10:57 am

Maybe just one little question

Where should I add options to compare command?

dkelly · Post by **dkelly** » Tue Oct 14, 2014 3:28 pm

Edit the script, find the lines that start with argv[argc++] and add or modify options.

_olq · Post by **_olq** » Wed Oct 15, 2014 10:16 am

Thanks again Dwight,

I have some trouble with that.

When I'm adding an option with the existing I have error "Failed to run external process"

args[argc++] = appPath+" -metric AE -fuzz 5%";

args[argc++] = job.getPath()+"/"+entries[0];

args[argc++] = job.getPath()+"/"+entries[1];

args[argc++] = differenceFN;

If I'm adding separate, option has no effect

args[argc++] = appPath;

args[argc++] = " -metric AE -fuzz 5%";

args[argc++] = job.getPath()+"/"+entries[0];

args[argc++] = job.getPath()+"/"+entries[1];

args[argc++] = differenceFN;

Do you have any idea?

dkelly · Post by **dkelly** » Wed Oct 15, 2014 3:37 pm

Follow the pattern that is already there for arguments

args[argc++] = appPath;

args[argc++] = "-metric"; args[argc++] = "AE";

args[argc++] = "-fuzz"; args[argc++] = "5%";

args[argc++] = job.getPath()+"/"+entries[0];

args[argc++] = job.getPath()+"/"+entries[1];

args[argc++] = differenceFN;

_olq · Post by **_olq** » Wed Oct 15, 2014 5:41 pm

So, it was reason

Of course works correctly.

Big thanks again!