Search found 23239 matches

by fmw42
2018-06-21T21:08:39-07:00
Forum: Users
Topic: Unexpected borders between white object and background when converting PDF to PNG
Replies: 2
Views: 47

Re: Unexpected borders between white object and background when converting PDF -> PNG

This command works fine for me on IM 7.0.8.2 Q16 Mac OSX using Ghostscript 9.23. Perhaps you need to upgrade ghostscript. magick mogrify -density 900 -units PixelsPerInch -background white -flatten -format png test.pdf What is your version of Ghostscript? Note that in IM 7, you should use magick mog...
by fmw42
2018-06-21T19:38:32-07:00
Forum: Bugs
Topic: Incomplete list of metrics from convert -list metric
Replies: 1
Views: 28

Incomplete list of metrics from convert -list metric

See the list http://www.imagemagick.org/script/comma ... php#metric, which includes ssim. But

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convert -list metric
does not include ssim nor dssim. I get only

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AE
Fuzz
MAE
MEPP
MSE
NCC
PAE
PHASH
PSNR
RMSE
by fmw42
2018-06-21T19:36:40-07:00
Forum: Bugs
Topic: “JPEG” algo treats JPEGs differently when combining to a PDF
Replies: 10
Views: 133

Re: “JPEG” algo treats JPEGs differently when combining to a PDF

Although I wrote the ssim shell script, I would suggest you replace that with the IM compare, which includes SSIM. But I think you might be better comparing using for example a method such as rmse that does not do more processing to the image. See http://www.imagemagick.org/script/command-line-optio...
by fmw42
2018-06-21T19:25:06-07:00
Forum: Bugs
Topic: “JPEG” algo treats JPEGs differently when combining to a PDF
Replies: 10
Views: 133

Re: “JPEG” algo treats JPEGs differently when combining to a PDF

Are you just angry that you cannot get a good solution from ImageMagick? We are trying to help, but you do not have to be rude. Snibgo explained it pretty clearly above: As far as I know, simply “integrating” JPEG into PDF is possible, but IM doesn't do that. It reads an image, which might be JPEG o...
by fmw42
2018-06-21T19:22:20-07:00
Forum: Bugs
Topic: possible bug +distort polynomial
Replies: 6
Views: 139

Re: possible bug +distort polynomial

I am confident I have it correct. I am confident +distort is not working correctly from my examples above. The affine works properly to keep the virtual canvas so that when flattened according to the offset coordinates, it gets shifted. The polynomial does not do the offset for the same set of contr...
by fmw42
2018-06-21T14:39:22-07:00
Forum: Bugs
Topic: “JPEG” algo treats JPEGs differently when combining to a PDF
Replies: 10
Views: 133

Re: “JPEG” algo treats JPEGs differently when combining to a PDF

I would suggest you search Google for jpg to pdf converters. See for example, https://en.softonic.com/downloads/jpg-to-pdf-converter
by fmw42
2018-06-21T09:14:02-07:00
Forum: Users
Topic: How to prevent alpha channel association during conversion?
Replies: 9
Views: 288

Re: How to prevent alpha channel association during conversion?

(btw., I don't believe that truecoloralpha is mentioned in command line options reference) convert -list type or magick -list type Bilevel ColorSeparation ColorSeparationAlpha ColorSeparationMatte Grayscale GrayscaleAlpha GrayscaleMatte Optimize Palette PaletteBilevelAlpha PaletteBilevelMatte Palet...
by fmw42
2018-06-21T09:10:33-07:00
Forum: Users
Topic: How to: generate CMYK TIFF with additional spot color channels
Replies: 3
Views: 1051

Re: How to: generate CMYK TIFF with additional spot color channels

Reading from and writing to additional channels in TIFF is not currently possible with ImageMagick as far as I know. But it has had some work on it, though I do not know of any time frame for it to be finished.
by fmw42
2018-06-21T09:06:15-07:00
Forum: Users
Topic: how to problems since upgrading ?
Replies: 3
Views: 87

Re: how to problems since upgrading ?

try proper IM syntax with the input right after convert.

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convert image.ps -resize 512x512 -crop 256x256 image.png
IM 6.8.9 is about 150 versions old and should be upgraded. Perhaps it had a bug.
by fmw42
2018-06-21T09:02:56-07:00
Forum: Users
Topic: Why are spaces forbidden in the -convolve argument
Replies: 3
Views: 69

Re: Why are spaces forbidden in the -convolve argument

Put quotes about your arguments and see if that works. With spaces, the arguments are considered as multiple sets of arguments and not one set.

Also consider using the newer -morphology convolve rather than the older legacy -convolve. See http://www.imagemagick.org/Usage/convolve/
by fmw42
2018-06-21T08:58:33-07:00
Forum: Bugs
Topic: Flatten layers – bad results (TIFF->JPG)
Replies: 1
Views: 57

Re: Flatten layers – bad results (TIFF->JPG)

I can verify on Mac OSX Sierra that it works fine in IM 6.9.10.1 Q16, but fails on IM 7.0.8.1 Q16 HDRI.
by fmw42
2018-06-21T08:45:55-07:00
Forum: Bugs
Topic: “JPEG” algo treats JPEGs differently when combining to a PDF
Replies: 10
Views: 133

Re: “JPEG” algo treats JPEGs differently when combining to a PDF

After reading all that, I am not sure what the ImageMagick bug actually is. Can you describe it in a short sentence?
by fmw42
2018-06-20T20:55:08-07:00
Forum: Users
Topic: Display difference of two images
Replies: 1
Views: 46

Re: Display difference of two images

Please, always provide your IM version and platform when asking questions, since syntax may differ. Also provide your exact command line and if possible your images. See the top-most post in this forum "IMPORTANT: Please Read This FIRST Before Posting" at http://www.imagemagick.org/discourse-server/...
by fmw42
2018-06-20T11:21:32-07:00
Forum: Users
Topic: Merging two transparent png images AND drawing an outline around them
Replies: 11
Views: 228

Re: Merging two transparent png images AND drawing an outline around them

Your version of ImageMagick does not include OpenMP, which allows multi-threading if you have more cores. My systems had a SSD also. I was actually processing with 7.0.8.1 Q16 HDRI. I would suggest you check your policy.xml file. or just do magick -list policy though that may not actually list your ...
by fmw42
2018-06-20T10:36:29-07:00
Forum: Users
Topic: Merging two transparent png images AND drawing an outline around them
Replies: 11
Views: 228

Re: Merging two transparent png images AND drawing an outline around them

I have no idea? What do you get from convert -version? Does it have OpenMP enabled? Are you on a hosted server that may have put limits on your policy.xml file?

The first one I mentioned was using the disk and the second one was using -blur.