Search found 24360 matches

by fmw42
2019-01-23T13:25:27-07:00
Forum: Users
Topic: Rectify images from weather satellite
Replies: 2
Views: 35

Re: Rectify images from weather satellite

Looks a little line the opposite of my cylinderize script. It appears to be similar to unwrapping an image wrapped about a cylinder. But it is more likely a specific map projection type transformation. See https://en.wikipedia.org/wiki/Map_projection and https://en.wikipedia.org/wiki/List_of_map_pro...
by fmw42
2019-01-23T13:11:19-07:00
Forum: Users
Topic: How to Extract Layers from a TIF File and convert to PNG with transparacy
Replies: 13
Views: 266

Re: How to Extract Layers from a TIF File and convert to PNG with transparacy

Thanks, snibgo, for the clarification. I thought since the first image was transparent, the layers merge would just composite the second over the transparent first.
by fmw42
2019-01-23T10:51:55-07:00
Forum: Users
Topic: ImageMagick Strange size/text issue
Replies: 5
Views: 132

Re: ImageMagick Strange size/text issue

The question was what are your versions of Ghostscript that Imagemagick uses to render the PDF files. If they are not the same and current, then upgrade them to the same versions. With regard to the text, what are your versions of freetype delegate used by Imagemagick. If they are not the same and c...
by fmw42
2019-01-23T10:43:05-07:00
Forum: Users
Topic: How to Extract Layers from a TIF File and convert to PNG with transparacy
Replies: 13
Views: 266

Re: How to Extract Layers from a TIF File and convert to PNG with transparacy

Yes, sorry, I had not added -background none to my command, though I am puzzled why it is actually needed, since the first image is made transparent. Anyway these work for me magick testfile.tif \( -clone 0 -alpha set -evaluate set 0 \) -delete 0,1 +swap -background none -layers merge testfile.png o...
by fmw42
2019-01-23T01:24:36-07:00
Forum: Users
Topic: Only black rectangle on PNG converted from simple SVG code in newer version of ImageMagick
Replies: 7
Views: 261

Re: Only black rectangle on PNG converted from simple SVG code in newer version of ImageMagick

Gim6626 wrote:
2019-01-23T01:20:48-07:00
Could not reproduce this bug anymore. Don't understand what happened.
Once Inkscape is installed and it worked once, it will work again. So it is likely that you are now using Inkscape to render all SVG files.
by fmw42
2019-01-23T01:23:36-07:00
Forum: Users
Topic: Only black rectangle on PNG converted from simple SVG code in newer version of ImageMagick
Replies: 7
Views: 261

Re: Only black rectangle on PNG converted from simple SVG code in newer version of ImageMagick

snibgo wrote: ↑Tue Jan 22, 2019 7:51 pm What delegate renders the SCG? Sorry, but I don't undestand your question. Could you explain it? SVG files are vector files and Imagemagick uses some other tool to convert them to raster images. He is asking what renderer you are using to convert the vector S...
by fmw42
2019-01-23T01:17:33-07:00
Forum: Users
Topic: How to Extract Layers from a TIF File and convert to PNG with transparacy
Replies: 13
Views: 266

Re: How to Extract Layers from a TIF File and convert to PNG with transparacy

In Imagemagick 7, use magick, not convert. Using convert will revert to using Imagemagick 6 behavior. Either of these work and are a bit simpler. magick testfile.tif \( -clone 0 -alpha set -channel rgba -evaluate set 0 \) -delete 0,1 +swap -layers merge testfile.png or magick testfile.tif \( -clone ...
by fmw42
2019-01-23T01:02:48-07:00
Forum: IMagick
Topic: Adjustments > black and white > preset feature
Replies: 18
Views: 3196

Re: Adjustments > black and white > preset feature

Yes there a question.

You cannot start with an image that has its transparency replaced by some checkerboard pattern. I showed that it works above if you start with a proper transparent image.
by fmw42
2019-01-22T16:26:53-07:00
Forum: IMagick
Topic: Adjustments > black and white > preset feature
Replies: 18
Views: 3196

Re: Adjustments > black and white > preset feature

exec("magick CloneOutput20190108040033.png hald-infrared.png -channel RGB -hald-clut +channel PNG24:5x.png"); By adding PNG24 your are turning off the alpha channel in your result so the background will not be transparent. The following works for me if you want grayscale alpha result. magick CloneO...
by fmw42
2019-01-22T14:27:39-07:00
Forum: Users
Topic: How to specify a complete path with layer extraction?
Replies: 13
Views: 316

Re: How to specify a complete path with layer extraction?

Your file in Photoshop has two layers, but Imagemagick does see a flattened layer [0], contrary to my previous comment and belief. identify -quiet Quicksilver.tif Quicksilver.tif[0] TIFF 3507x2480 3507x2480+0+0 8-bit sRGB 26.2328MiB 0.000u 0:00.009 Quicksilver.tif[1] TIFF 3507x2480 3507x2480+0+0 8-b...
by fmw42
2019-01-22T14:17:16-07:00
Forum: Bugs
Topic: possible bug IM 7 extracting TIFF layer.
Replies: 0
Views: 97

possible bug IM 7 extracting TIFF layer.

Using IM 7.0.8.24 Q16 Mac OSX, I can extract all the layers of the a TIFF file fine in one command. But when I try to extract a given layer, it comes out black. Input TIFF: http://www.fmwconcepts.com/misc_tests/tif_bugs/testfile.tif magick testfile.tif testfile_%d.png http://www.fmwconcepts.com/misc...
by fmw42
2019-01-22T14:10:09-07:00
Forum: Users
Topic: How to Extract Layers from a TIF File and convert to PNG with transparacy
Replies: 13
Views: 266

Re: How to Extract Layers from a TIF File and convert to PNG with transparacy

There appears to be a bug in Imagemagick 7. I will report it.
by fmw42
2019-01-22T13:28:37-07:00
Forum: Users
Topic: How to specify a complete path with layer extraction?
Replies: 13
Views: 316

Re: How to specify a complete path with layer extraction?

You said earlier that you only had 2 layers. Now you are showing 3 layers. So [2] should be valid. With regard to your file paths, to check, try

Code: Select all

cd /path/to/images
ls
Does that show the list you expect? If not, then your path is incorrect.
by fmw42
2019-01-22T13:21:22-07:00
Forum: Users
Topic: How can i clear alt tags or change them?
Replies: 1
Views: 77

Re: How can i clear alt tags or change them?

Imagemagick does not do HTML processing. Alt tags are in your HTML file, not in the actual image.