Search found 69 matches

by pablobhz
2017-03-23T17:55:00-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Re: Negate images on MagickNET

I assume I can use the images from this topic: https://www.imagemagick.org/discourse-server/viewtopic.php?f=27&t=31621. Exactly this topic . I got the directions for doing the combine thing using ImageMagick and then I got how to do it with MagickNET But I still have a question about combine an cmy...
by pablobhz
2017-03-23T17:49:51-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Re: Negate images on MagickNET

Okay I will wait .
If needed I can supply the images I'm using (testing purposes )
Thanks in advance
by pablobhz
2017-03-23T17:42:53-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Re: Negate images on MagickNET

Perhaps I could try an earlier version of MagickNET ?
I'm using the AnyCPU version (latest) from NuGet.
by pablobhz
2017-03-23T17:26:52-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Re: Negate images on MagickNET

dlemstra wrote:
2017-03-23T17:23:32-07:00
What happens when you do "ColorSpace = ImageMagick.ColorSpace.CMYK;" inside the foreach loop? (after the negate)
Yeah I did . And the output was a totally white image .
The original images are on the Gray colorspace . If I force them to cmyk things go wrong
by pablobhz
2017-03-23T17:08:41-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Re: Negate images on MagickNET

Have you tried to just do currImage.Negate()? Yeah I did Also I tried to add the negated images to a new MagickImage collection , same result . Of course , when combining I have different results if I set the colorspace to cmyk or not ; my impression is that by leaving the colorspace the default (i...
by pablobhz
2017-03-23T07:00:49-07:00
Forum: Magick.NET
Topic: Negate images on MagickNET
Replies: 10
Views: 12158

Negate images on MagickNET

Hello. I've analyzed the Object Reference inside visual studio, for negating images. However, the output (final image) isn't being the expected. I'm using this approach: foreach(MagickImage currImage in images) { currImage.Negate(true, ImageMagick.Channels.All); } using (MagickImage image = images.C...
by pablobhz
2017-03-22T21:52:09-07:00
Forum: Magick.NET
Topic: Missing black channel when using MagickCollection.Combine()
Replies: 13
Views: 16632

Re: Missing black channel when using MagickCollection.Combine()

Your files named (C) (M) etc do not represent cyan, magenta, etc. That is a problem. They represent the negatives of cyan, magenta etc. So we need to negate them before we can use them. (I'll explain. A file representing K, black ink, will have high values where we want lots of black ink, and low v...
by pablobhz
2017-03-22T14:04:58-07:00
Forum: Magick.NET
Topic: Missing black channel when using MagickCollection.Combine()
Replies: 13
Views: 16632

Re: Missing black channel when using MagickCollection.Combine()

I'll try as soon o get home But I was using negate the same way you did , and I was still missing the black channel . I'm pretty sure MagickNET has an equivalent to negate ; probably . Perhaps I have to rewrite the files negates before combining them ; it's an approach Thanks for your attention and ...
by pablobhz
2017-03-22T09:52:53-07:00
Forum: Magick.NET
Topic: Missing black channel when using MagickCollection.Combine()
Replies: 13
Views: 16632

Re: Missing black channel when using MagickCollection.Combine()

The directory contains: 17,240,150 8FILES_IMPOSED_4UP_BACK.PDF (C)00 - Copy.TIF 20,725,476 8FILES_IMPOSED_4UP_BACK.PDF (C)00.TIF 165,843 8FILES_IMPOSED_4UP_BACK.PDF (Imposition)00.TIF 15,566,357 8FILES_IMPOSED_4UP_BACK.PDF (K)00.TIF 20,748,861 8FILES_IMPOSED_4UP_BACK.PDF (M)00.TIF There doesn't see...
by pablobhz
2017-03-22T08:59:32-07:00
Forum: Magick.NET
Topic: Combine 4 grayscale images into a final CMYK image
Replies: 13
Views: 15838

Re: Combine 4 grayscale images into a final CMYK image

Okay. So i got it wrong. The color i want to add, is composed by this amount on each channel. Like i mentioned before: 0% cyan 10% magenta 60% yellow 0% black The image color is Grayscale and when combining it to a CMYK image, this is the color the image should have. I supposed it would be like conv...
by pablobhz
2017-03-22T08:56:32-07:00
Forum: Magick.NET
Topic: Missing black channel when using MagickCollection.Combine()
Replies: 13
Views: 16632

Re: Missing black channel when using MagickCollection.Combine()

Check the google drive folder. https://drive.google.com/drive/folders/0B5ZLEEQh3_YIZlBuMG9IRVNDODA?usp=sharing Tiffs are there. Ignore the Imposition (its the spot color, i'll figure out later how to combine it). Edit: And i tried to set the colorspace to CMYK on MagickNET using (MagickImage image =...
by pablobhz
2017-03-22T06:02:20-07:00
Forum: Magick.NET
Topic: Missing black channel when using MagickCollection.Combine()
Replies: 13
Views: 16632

Missing black channel when using MagickCollection.Combine()

Hello Everyone. I'm using the Combine method from MagickCollection to combine 4 grayscale images into a final one (CMYK). However, i'm having a weird situation: When looking the final image from Windows Photo Viewer\Photoshop , the black channel is missing. When looking from Google Drive Preview, th...
by pablobhz
2017-03-21T21:33:48-07:00
Forum: Magick.NET
Topic: Combine 4 grayscale images into a final CMYK image
Replies: 13
Views: 15838

Re: Combine 4 grayscale images into a final CMYK image

fmw42 wrote:
2017-03-21T21:15:20-07:00
IM does not support spot colors as far as I know.
And if i add it as a new color ?
Ex: i have color X
It is composed by:
0% cyan
10% magenta
60% yellow
0% black

How would i combine an image with this color composition (and a white background) into my existant CMYK image ?
by pablobhz
2017-03-21T21:07:57-07:00
Forum: Magick.NET
Topic: Combine 4 grayscale images into a final CMYK image
Replies: 13
Views: 15838

Re: Combine 4 grayscale images into a final CMYK image

Got it done. I was looking this thread: http://www.imagemagick.org/discourse-server/viewtopic.php?t=21159 Then i saw an sample command: convert imgC imgM imgY imgK -set colorspace CMYK -negate -combine output_image Should've set the colorspace to CMYK and negate also. Output is fine now. However, no...
by pablobhz
2017-03-21T20:42:50-07:00
Forum: Magick.NET
Topic: Combine 4 grayscale images into a final CMYK image
Replies: 13
Views: 15838

Re: Combine 4 grayscale images into a final CMYK image

It does not look like you changed the colorspace to CMYK per dlemstra's suggestion. I do not use Magick.NET, but as a quick test, try negating the image (command line equivalent is -negate). If that is close then you need to do what dlemstra suggests. But i did The entire command is: convert c.tif ...