Legacy ImageMagick Discussions Archive

I see, didn't know that. Thank you!

I'm using ImageMagick 6.6.5-8 2011-02-14 Q16 on opensuse 11.4. When using this command: convert -resize 320x320 images/58/full/test.jpg images/58/320px/test320px.jpg I get this error: convert: unable to open image `images/58/320px/test320px.jpg': @ error/blob.c/OpenBlob/2584. The folders are all ...

I use imagemagick 6.3.7 to do serveral tasks, e.g. resize and crop an image. To do this I wrote a php script (started by a cronjob every 10 minutes) which takes 15 images and processes every one of them in a loop. Inside a loop there are 8 jobs to be done. One of them looks like this: convert image ...

Thank you snibgo, putting "2>error.log" at the end is exactly what I needed!

I'm using several functions of ImageMagick on my Linux-Server (shared hoster). Is there something like an error log, so that I can look after problems?

If not, can I maybe debug a command by passing a certain statement or something?

Thanks, but the sort option doesn't work with my old version (which the hoster doesn't want to update).

Well, thank you very much, but it's a little too complicated for me. I hoped for an easy solution.

But never mind, I using PHP itself to do it. It's not perfect, but it'll do.

If anyone wants the code I'll post it here to be discussed.

I know how to find out if an image is a true color image or a grayscale image. But what I'd like to have is the solution on how to identify for example this image: http://www.pitopia.de/scripts/pictures/detail.php?pid=173820&pageID=2&view=1 as a grayscale image. The whole picture is black and white ...

Thank you very much, fmw42! That's exactly what I needed. So as a brief overview for other PHP-programmers: To extract the most dominant colours out of an image, I use imagemagick to convert that image into a png-file with exactly the amount of colours I need. Then I take this generated image to ...

Thank you so far.

But now I have a different idea.

Is it possible to convert a jpg into a png, and telling imagemagick to reduce the png to 10 colors? You know, just like in photoshop.

I used exactly your posted command on the server itself via SSH. Committing your command, the server writes the file named info:- . When I open it (after renaming it to info.txt) I see what I stated before. I tried it also with a real image on the server, with the same result. Mean no offense, but ...

Thanks, but it doesn't put out exactly what I need. By using your code I get this: id=ImageMagick version=1.0 class=DirectClass colors=0 matte=False columns=256 rows=200 depth=8 colorspace=RGB compression=JPEG quality=75 resolution=72x72 Comment={ 15044: ( 0, 0, 0) black 43: ( 1, 1, 1) #010101 325 ...

I can do nothing about it, my hoster only provides the version 6.2.4.

What I need to do is extracting the ten most used colors in a jpg.

I appreciate your help very much!

Thank you, your grep-trick works.

It's not my fault, the hoster runs confixx with very old software (I would call it abandonware) and refuses to install new apps, while my customer refuses to look for a better hoster.

Anyway, thank you very much.

My hoster only provides ImageMagick version 6.2.4. On my localhost I have 6.5.5 installed. There I use this command: identify -format "%[colorspace]" "/var/www/web1/html/image.jpg" It works as I expected. But on my hoster's server it doesn't work (I test it via SSH). Using format options without ...