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by fmw42
2017-11-16T13:11:50-07:00
Forum: Users
Topic: why is the "magick" command not available on ubuntu?
Replies: 2
Views: 59

Re: why is the "magick" command not available on ubuntu?

Does your /tmp directory have enough space left? Are then ImageMagick files left there? Have you configured environment variables for ImageMagick for its MAGICK_TEMPORARY_PATH, see http://www.imagemagick.org/script/resou ... nvironment. Do you have enough RAM for your image?
by fmw42
2017-11-16T13:09:34-07:00
Forum: Bugs
Topic: PDF > PNG Conversion Issues
Replies: 11
Views: 111

Re: PDF > PNG Conversion Issues

I do not know what more to suggest other than trying to back down your Ghostscript and PNG to the same versions I have. Or try installing IM 6 in place of IM 7. By the way, I install all my delegates from MacPorts and then install IM from source. See http://www.imagemagick.org/discourse-server/viewt...
by fmw42
2017-11-16T12:44:38-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

The warnings are about non-standard tags in the meta data. They should not be a worry as long as they say warnings. IM ignores those tags but reports them as warnings. I am not a Linux user, so cannot tell you how to upgrade. You may have to remove the old JPG and reinstall IM after installing the n...
by fmw42
2017-11-16T12:07:09-07:00
Forum: Users
Topic: why is the "magick" command not available on ubuntu?
Replies: 2
Views: 59

Re: why is the "magick" command not available on ubuntu?

Ubuntu and most of Linux systems have not made the change to IM 7, yet. Some flavors of Linux may be offering both versions with IM 7 an option, but you would have to check with them about where the IM 7 version is located.
by fmw42
2017-11-16T12:04:59-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

P.S. When using draw directly it probably know more about brightness corrections from its meta data that IM does not know. So that is likely why my IM conversion is darker than the cr2 original. Nevertheless you should not be getting any red speckles. I am not an expert on raw formats such as NEF or...
by fmw42
2017-11-16T12:02:38-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

All your messages are warnings. You can suppress them by adding -quiet to your command line after convert.

You might try upgrading JPEG. That version is old.

Using CR2 directly should produce a JPG if you use the proper arguments.

Did you check the dcraw version as I showed above?
by fmw42
2017-11-16T11:58:32-07:00
Forum: Bugs
Topic: PDF > PNG Conversion Issues
Replies: 11
Views: 111

Re: PDF > PNG Conversion Issues

What version of Mac OSX. I am on Sierra.

How did you install IM and the needed delegates? From ImageMagick, Homebrew, MacPorts?
by fmw42
2017-11-16T11:36:22-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

Linux systems patch old version. Your version by number is old, but has been patched most recently in July 2017. So is likely current. But since I do not know what the latest patch is, I cannot say. Furthermore I dislike the process of patching, since patches can be bad or missed. Thus it is hard to...
by fmw42
2017-11-16T11:28:50-07:00
Forum: Bugs
Topic: PDF > PNG Conversion Issues
Replies: 11
Views: 111

Re: PDF > PNG Conversion Issues

Here is my result:

Code: Select all

magick -colorspace sRGB test_export.pdf -background white -alpha remove test_export.png
Image

When you view it in your same tool that you view your own result, does it show any stripes?
by fmw42
2017-11-16T11:24:43-07:00
Forum: Bugs
Topic: PDF > PNG Conversion Issues
Replies: 11
Views: 111

Re: PDF > PNG Conversion Issues

What is your platform and what tool are you using to view it?
by fmw42
2017-11-16T11:23:34-07:00
Forum: Bugs
Topic: PDF > PNG Conversion Issues
Replies: 11
Views: 111

Re: PDF > PNG Conversion Issues

I am at a loss unless there is a bug in our newer Ghostscript or PNG version?
by fmw42
2017-11-16T11:20:07-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

6.8.9.9 is over 100 versions old. You might consider upgrading IM also. However, it looks to be patched at July 2017. So it may be OK. Though you could check to see if there is a more current patch. My guess is it is your version of dcraw.
by fmw42
2017-11-16T11:18:41-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

I ran your cr2 image with your command on my IM 6.9.9.23 Q16 Mac OSX and got no red speckle distortion and you show in your output. convert cr2:"_MG_9449.CR2" -resize 75% test1.jpg Also what version of dcraw and libjpeg? I am using dcraw @9.27.0_2 jpeg @9b_0 Perhaps you need to upgrade one or both.
by fmw42
2017-11-16T11:10:51-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

I downloaded the example.nef from https://www.online-convert.com/file-format/nef and processing it on IM 6.9.9.23 Q16 Mac OSX with the following command: convert nef:example.nef -resize 75% example.jpg The result was a bit darker than the new file, but the colors were good. So I reprocessed as conve...
by fmw42
2017-11-16T10:54:09-07:00
Forum: Bugs
Topic: scaling down an image gives red and blue shadows?
Replies: 19
Views: 209

Re: scaling down an image gives red and blue shadows?

Which of the two commands are giving you trouble? Or are you running both commands on the same image taking the output from the first command and using it for the input of the second command.