Search found 25275 matches

by fmw42
2019-08-23T18:59:07-07:00
Forum: Developers
Topic: [Github] [Latest] Android Imagemagick 7
Replies: 5
Views: 127

Re: [Github] [Latest] Android Imagemagick 7

Thanks for your efforts and contribution.
by fmw42
2019-08-22T21:07:18-07:00
Forum: Users
Topic: new to convert - have error message
Replies: 1
Views: 97

Re: new to convert - have error message

If you are sure the file is in the directory from which you specified your command, then you likely do not have Ghostscript installed as a delegate. ImageMagick uses it to convert PDF files to other formats. Check if you have Ghostscript installed. See if gswin32c.exe can be found on your system. Al...
by fmw42
2019-08-22T10:21:46-07:00
Forum: Developers
Topic: identify returns different results for HTTPS than for local source
Replies: 8
Views: 271

Re: identify returns different results for HTTPS than for local source

Try simply downloading the https webp file and save to webp. Then do identify on that. You can even pipe it

Code: Select all

magick https://...../image.webp WEBP:- | magick identify WEBP:-
by fmw42
2019-08-22T09:05:35-07:00
Forum: Developers
Topic: identify returns different results for HTTPS than for local source
Replies: 8
Views: 271

Re: identify returns different results for HTTPS than for local source

Mostly identify will show tiff if you do not preface the file with DNG:. See https://imagemagick.org/script/formats.php DNG R Digital Negative Requires an explicit image format otherwise the image is interpreted as a TIFF image (e.g. dng:image.dng). But I am not sure you can do that with http:// or ...
by fmw42
2019-08-21T09:16:34-07:00
Forum: Users
Topic: Scaling various images to A4 size including borders
Replies: 2
Views: 122

Re: Scaling various images to A4 size including borders

Try this convert -size 1000x842 pattern:checkerboard -background black -rotate "90>" -trim +repage -resize "595x842>" -gravity center -extent 595x842 result.png If that works, replace the -size 1000x842 pattern:checkerboard with your image and then replace result.png with your file.pdf I don't think...
by fmw42
2019-08-21T08:59:59-07:00
Forum: Users
Topic: Scaling various images to A4 size including borders
Replies: 2
Views: 122

Re: Scaling various images to A4 size including borders

Post an input image so we can test with your command and then correct it.

Try replacing -page "A4<" with -resize WxH for the WxH corresponding to A4.
by fmw42
2019-08-21T08:51:50-07:00
Forum: Digital Image Processing
Topic: Bicubic (Catrom) image downsampling without antialiasing?
Replies: 7
Views: 418

Re: Bicubic (Catrom) image downsampling without antialiasing?

I suspect that the ImageMagick resize is using a different method that does a better job of dealing with artifacts. Sorry, I do not know what algorithm/code Matlab is using. See https://imagemagick.org/Usage/filter/ https://imagemagick.org/Usage/filter/nicolas/ You can control the filter settings wi...
by fmw42
2019-08-20T18:25:46-07:00
Forum: Bugs
Topic: [RESOLVED] possible bug with MPC IM 6.9.10.60 Q16 Mac OSX Sierra
Replies: 2
Views: 420

Re: possible bug with MPC IM 6.9.10.60 Q16 Mac OSX Sierra

This seems to be fixed and does not Abort trap in IM 6.9.10.66
by fmw42
2019-08-20T18:24:11-07:00
Forum: Bugs
Topic: Possible bug IM 7.0.8.60 with resize, attenuate and noise
Replies: 1
Views: 272

Re: Possible bug IM 7.0.8.60 with resize, attenuate and noise

This still fails in IM 7.0.8.61 Q16 Mac OSX.
by fmw42
2019-08-20T11:26:26-07:00
Forum: Users
Topic: reproducing Spherical Distortion Map
Replies: 9
Views: 269

Re: reproducing Spherical Distortion Map

On Windows, best to use double quotes. Try

Code: Select all

convert -size 1500x1500 xc: -channel R -fx "yy=(j+.5)/h-.5; (i/w-.5)/(sqrt(1-4*yy^2))+.5" -separate +channel sphere_lut.png
This works fine for me on Mac OSX.
by fmw42
2019-08-20T11:22:49-07:00
Forum: Digital Image Processing
Topic: Bicubic (Catrom) image downsampling without antialiasing?
Replies: 7
Views: 418

Re: Bicubic (Catrom) image downsampling without antialiasing?

Try

Code: Select all

convert image_file -filter catrom -resize 160x120 -background black -gravity center -extent 160x120 destinFileName 
by fmw42
2019-08-20T09:29:50-07:00
Forum: Digital Image Processing
Topic: Bicubic (Catrom) image downsampling without antialiasing?
Replies: 7
Views: 418

Re: Bicubic (Catrom) image downsampling without antialiasing?

Anthony would have to look at this whenever he gets online. He was the developer. Unfortunately, he rarely contributes here at this time. What antialiasing step? I was not aware of any. This is the code from pixel.c static inline void CatromWeights(const MagickRealType x, MagickRealType (*weights)[4...
by fmw42
2019-08-20T09:22:40-07:00
Forum: Bugs
Topic: Change image color
Replies: 14
Views: 11536

Re: Change image color

I get your same bad result on IM 7.0.8.61 Q16 HDRI Mac OSX with the following command: magick -respect-parenthesis \ \( 6214291349a70-af1a-431a-8186-0ced1d8e8c4d.png -fuzz 50% -fill "rgb(225,225,225)" -opaque black -quality 20 \) \ \( -clone 0 -background "rgb(53,63,124)" -shadow 50x1+2+1 \) \ \( -c...
by fmw42
2019-08-19T09:55:22-07:00
Forum: Bugs
Topic: Change image color
Replies: 14
Views: 11536

Re: Change image color

Please show your input and output images and the command you used. Also what is the exact version of ImageMagick 7.0.8.x If this was the last command I showed, then it seems to work fine for me on IM 7.0.8.61 Q16 Mac OSX. http://www.fmwconcepts.com/misc_tests/colorize/input_text.png Unix syntax: mag...