cmyk

Convert TIFF to PostScript

由 落花浮王杯 提交于 2019-12-13 21:26:44
问题 I'm writing .net code (Windows Forms Application) which reads a TIFF image (CMYK) and sends it to printer (using WritePrinter). Before I send it, I need to convert the TIFF image to PostScript. Could any of you share the code how to create PostScript out of TIFF image? I appreciate it! 回答1: My company's product, dotImage includes an encode for EPS, but it will also generate page generation operators. Typical usage might be something like this: public void ConvertToPS(Stram tiffStm, int frame,

imagemagick convert CMYK pdf to RGB jpeg or PNG and preseerve colors

由 佐手、 提交于 2019-12-13 11:34:05
问题 I have a cmyk pdf that I am trying to convert to a RGB jpeg or png file but have the colors stay pretty close to what the CMYK version is (compared to how photoshop does it) I am trying the following command but the colors change drastically from a red color to almost bright neon red and so on. Here is the command convert cmykpdf.pdf +profile icc -profile AdobeRGB1998.icc -colorspace sRGB jpegtesting.jpg Any ideas? or thoughts on how to do this. I tried saving it as a PNG also and same issue

Image from RGB To Cmyk in php

由 北慕城南 提交于 2019-12-13 05:12:14
问题 I've some problem with php and imagick, i want to convert some image from rgb system to cmyk, but i've only black/or non background nothing else. $icc_cmyk = file_get_contents('USWebUncoated.icc'); $img->profileImage('icc', $icc_cmyk); $img->setImageColorspace(12); if ($php_vs < 5.3) { //ADJUST GAMMA BY 20% for 5.2.x $img->levelImage(0, 2.0, $range['quantumRangeString']); } else { //php 5.3 hack FOR INVERTED COLORS $img->negateImage(false, Imagick::CHANNEL_ALL); } $img->stripImage(); //$img-

ghostscript cmyk export yields wrong black

由 元气小坏坏 提交于 2019-12-12 23:38:23
问题 I'm trying to convert an RGB-pdf file created by Inkscape to a print ready cmyk-pdf using PSOcoated_v3.icc color profile. PDF generation works fine. However, I'd like to check for correct final colors, especially for the black. As I did not found any (free) tool to pick the cmyk color from the final pdf I thought as a first check I convert the RGB-pdf to cmyk-tiff and check the black value. Doing so using gs -q -dBATCH -dSAFER -dNOPAUSE \ -sDEVICE=tiff32nc \ -sDefaultRGBProfile=sRGB2014.icc \

DirectCast not working

由 假如想象 提交于 2019-12-12 04:14:16
问题 'ofd is open file dialog Dim img As Bitmap Dim iscmyk As Boolean Dim i As String Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ofd.Filter = "Jpg Image(*.jpg)|*.jpg" If ofd.ShowDialog = Windows.Forms.DialogResult.OK Then img = Bitmap.FromFile(ofd.FileName) iscmyk = ((DirectCast(img.Flags, Imaging.ImageFlags) And Imaging.ImageFlags.ColorSpaceCmyk) = Imaging.ImageFlags.ColorSpaceCmyk) End If img = New Bitmap(img, New Size(120, 190))

Distinguish between transparency and extra alpha channels?

由 点点圈 提交于 2019-12-12 03:52:10
问题 I am sorry in advance if I am not explaining my question really well. I am not 100% aware of the stuff I am asking. Lets say that I have some CMYK tiff files. Is there a way that I can distinguish the difference between transparency and extra alpha channel ? I used exiftools in the terminal with the command : exiftool -G -S filename.tif and I got a tag (ExtraSamples) that provides information about the alpha channel. Is there a way that I can distinguish the aforementioned difference ? Thanks

CMYK Overprinting and Knockout in Ghostscript

由 流过昼夜 提交于 2019-12-12 02:56:09
问题 I'm trying to get a grasp on the capabilities of the current version of Ghostscript (see also this question that I asked a few days ago). So, I downloaded a "test form" for the PDF/X-4 standard from www.pdfx-ready.ch, a standards organization in Switzerland, and tried to render it... (In case anyone wants to try this, here's the direct download link: http://www.pdfx-ready.ch/files/PDFX-ready-OutputTest_PDFX4-CMYK_V301d.zip. You can find more info on this page (in German): http://www.pdfx

how can convert image cmyk to rgb mode in javascript

由 。_饼干妹妹 提交于 2019-12-11 13:27:01
问题 I have a problem: Browsers do not support showing images in CMYK mode and the client see some really sharp and different colors in his uploaded image while the colors is alright. solve this problem i think its a good idea to convert an CMYK image to a RGB mode image in client-side with using JavaScript language. based on my search result about converting image in CMYK to RGB mode with using JavaScript, required image to be imported to a canvas and makes every color number in each pixel

Converting (any) PDF to black (K)-only CMYK

由 我们两清 提交于 2019-12-09 13:30:37
问题 This is related to: Converting PDF to CMYK (with identify recognizing CMYK). Script (or some other means) to convert RGB to CMYK in PDF? ... but a bit more specific here: say I have an RGB PDF, where the text color is "rich black" (R:0 G:0 B:0 gone to C:100 M:100 Y:100 K:100), and diverse images and vector graphics. I would like to convert this to a CMYK PDF, using a free command line tool (so it is batch scriptable under Linux), which has contents only in the black (K) channel: Preserves

Ghostscript convert PDF to JPG (CMYK profile) resolution error

由 大兔子大兔子 提交于 2019-12-08 13:11:32
I'm using Ghostcript to convert some PDF files to JPG. All is working when converting the program consider the resolution of 600dpi when converting and output jpeg quality is good. Here is my code : gs -sDEVICE=jpegcmyk -dTextAlphaBits=4 -r600 -dSAFER -dBATCH -dNOPAUSE -o my_output_file.jpg my_input_file.pdf But when I open the file in Photoshop, the properties contains 72dpi instead of 600dpi I expected : When I try with RGB profile for output, it is ok, I have got 600dpi. So what I want is CMYK + 600dpi in image properties. As can be seen from your screenshots, both images are of the same
订阅 cmyk