Ping large amount of images

[ivan.savu]

Hi everybody,

I'm using Magick++ to obtain information about large number of very big images. I'm using ping method, from Magick::Image. My problem is that although I'm just pinging images, ImageMagick creates temporary files in temp folder, and after pinging large amount of files, I run out of space (Temp folder reaches 50GB). I tried limiting disk usage with MagickCore::SetMagickResourceLimit(MagickCore::DiskResource, 0); but then I get the "cache resource exhausted" exception. Is there any way I could disable caching ? Any help would be welcome.

Thanks, and please excuse my lousy English .

[magick]

With most formats, pinging is lightweight. However, a few require that they first be cached to disk. Which image formats are you pinging? Can you post a small as possible Magick++ source code that illustrates the problem?

[ivan.savu]

Thanks for quick reply .

I'm working with 1bit tiff files. Here's output of identify for one of them, they should all be of same size. There's around 700 of such images.

Code: Select all

a4b2.tif TIFF 9449x5906 9449x5906+0+0 1-bit Bilevel DirectClass 777kb 0.344u 0:01
identify.exe: incorrect count for field "DateTime" (11, expecting 20); tag ignored. `a4b2.tif'.
identify.exe: a4b2.tif: unknown field with tag 33550 (0x830e) encountered. `TIFFReadDirectory'.
identify.exe: a4b2.tif: unknown field with tag 33922 (0x8482) encountered. `TIFFReadDirectory'.

Here's a snippet of trimmed down code of what I'm doing:

Code: Select all

	for ( recursive_directory_iterator iter(imagesPath); iter != endIter; iter++ )
	{
		Magick::Image image_loader = Magick::Image();
                path image_file = iter->path();

		try
		{
			image_loader.ping(imageFile.string());
		}
		catch(...)
		{
 		       //Exception Handling...
		}
	}

while the loop executes ImageMagick creates large number of magick-* files in Temp directory. Each file is 213M big. This continues until I run out of space..
I ping each file exactly once, so I don't need to keep cache for all of them, any way I can achieve this ? Thanks.

[magick]

We can reproduce the problem you posted and will have a fix for it in the ImageMagick Subversion trunk within a day or two. The patch will be available in the next point release as well. Thanks.

[ivan.savu]

Thanks If there's anything I can do to help, just say it.