Search found 10665 matches

by magick
2017-09-20T13:36:30-07:00
Forum: Developers
Topic: HEIF / HEIC image format?
Replies: 1
Views: 30

Re: HEIF / HEIC image format?

The only chance of an implementation is likely if an ImageMagick user contributes a reference implementation that works directly with ImageMagick. Another option would be if there was a command-line program to decode and encode the HEIF image format. We could then use the program as a delegate progr...
by magick
2017-09-20T03:25:42-07:00
Forum: Users
Topic: License, copyright, redistribution
Replies: 1
Views: 41

Re: License, copyright, redistribution

Regarding your licensing questions. Have you read https://www.imagemagick.org/script/license.php? It includes a discussion of how to comply with the license.
by magick
2017-09-19T04:04:23-07:00
Forum: Bugs
Topic: Heap buffer overflow in GetNextToken()
Replies: 1
Views: 42

Re: Heap buffer overflow in GetNextToken()

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow.
by magick
2017-09-17T05:22:52-07:00
Forum: Bugs
Topic: Possible bug -poly
Replies: 10
Views: 551

Re: Possible bug -poly

IMv7 is channel aware. Since checks.jpg is grayscale, which is one channel on IMv7 (3 in IMv6), it only contributes to the red channel of the evaluation. A fix is to ensure all images are in the same colorspace which assures the same number of channels: magick checks.jpg lena2.jpg zelda3.jpg -colors...
by magick
2017-09-16T06:01:33-07:00
Forum: Bugs
Topic: Possible bug -layers optimize
Replies: 4
Views: 155

Re: Possible bug -layers optimize

Try this command, and be patient. Its pushing pixels to disk so its quite slow:

Code: Select all

convert -define registry:temporary-path=./ -limit memory 16mb image.png null: \( input.gif -coalesce \) -gravity Center -layers composite -layers optimize des.gif
by magick
2017-09-15T16:48:02-07:00
Forum: Developers
Topic: Enhancement Request for Compare
Replies: 2
Views: 123

Re: Enhancement Request for Compare

Look for a patch by sometime tomorrow.
by magick
2017-09-14T16:28:23-07:00
Forum: Bugs
Topic: Null pointer dereference in GetJPEGMethod()
Replies: 1
Views: 70

Re: Null pointer dereference in GetJPEGMethod()

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ https://www.imagemagick.org/download/beta/ by sometime tomorrow.
by magick
2017-09-14T07:14:20-07:00
Forum: Users
Topic: Commercial Purpose free of Charge ?
Replies: 5
Views: 5283

Re: Commercial Purpose free of Charge ?

You likely have a web page somewhere that points to your cloud service. Mentioning ImageMagick somewhere on your web pages should be sufficient to comply with the license.
by magick
2017-09-14T01:50:16-07:00
Forum: Bugs
Topic: Reading animated gif -> 'invalid colormap index' error in version 7
Replies: 6
Views: 931

Re: Reading animated gif -> 'invalid colormap index' error in version 7

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow.
by magick
2017-09-13T06:26:16-07:00
Forum: Bugs
Topic: Possible bug/limitation of fx string formats
Replies: 2
Views: 137

Re: Possible bug/limitation of fx string formats

Fixed the precision problem. And here is the command you want to use to get expected results: magick gradient_u.tif gradient_v.tif -fx 'u/v' -precision 15 -format "minima=%[fx:minima]\n maxima=%[fx:maxima]\n mean=%[fx:mean] \n" info: Max() and min() are functions, see https://www.imagemagick.org/scr...
by magick
2017-09-12T17:04:47-07:00
Forum: Users
Topic: floating-point, pixel-wise image division
Replies: 15
Views: 310

Re: floating-point, pixel-wise image division

Use the default quantum (Q16) and just add --enable-hdri. Since the pixels are floating point, this configure command-line option is sufficient. Also, quantum 64 has never been officially blessed. It may work but we have not certified it yet.
by magick
2017-09-12T11:08:36-07:00
Forum: Bugs
Topic: documentation bugs: color-management.php says IM treats all gray images as linear
Replies: 7
Views: 235

Re: documentation bugs: color-management.php says IM treats all gray images as linear

Most image processing algorithms require a linear colorspace for optimal results. Only when an image is displayed to a monitor or printer does it make sense to utilize gamma. So the ideal workflow would be to store your image in a linear colorspace, apply your image processing options, and only on d...
by magick
2017-09-12T09:58:41-07:00
Forum: Bugs
Topic: documentation bugs: color-management.php says IM treats all gray images as linear
Replies: 7
Views: 235

Re: documentation bugs: color-management.php says IM treats all gray images as linear

Use -intensity Rec709Luminance to return linear grayscale, e.g. convert rose: -intensity Rec709Luminance -colorspace gray image.pgm. Internally grayscale can be linear or non-linear. However, as mentioned, pushing the pixels to an image format is problematic since most formats do not have sufficient...
by magick
2017-09-12T08:40:04-07:00
Forum: Bugs
Topic: documentation bugs: color-management.php says IM treats all gray images as linear
Replies: 7
Views: 235

Re: documentation bugs: color-management.php says IM treats all gray images as linear

The documentation is right. Gray is assumed linear. Likely a bug. We are investigating a fix to the problem and documentation now.
by magick
2017-09-12T04:03:34-07:00
Forum: Bugs
Topic: Possible bug -poly
Replies: 10
Views: 551

Re: Possible bug -poly

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow.