cmyk

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: 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. 回答1: As can be

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm looking for graphics library with CMYK support(JPG or TIF). I have to read one big image file and one small, then write second on first. Output have to be also CMYK(without any CMYK->RGB conversion). There are any? (C#/C++/Java or somthing else) 回答1: (Disclaimer, I work for Atalasoft) Atalasoft dotImage will read and write images in as CMYK as well as perform overlay operations in CMYK space. the code you would need to do this is: public void OverlayCMYKOnCMYK ( Stream bottomStm , Stream topStm , Point location , Steam outStm )

I'm about to converting RGB color to CMYK for printing purpose. scale of this conversion is Adobe Photoshop ( Image -> Mode -> CMYK color ) I tried 2 solution , but none of them return the right value : Solution 1 - Using .NET Framework At first , I followed by these steps Download ICC profiles (windows version) from Adobe Convert the #color to CMYK used System.Windows.Media.Color.FromValues // return Color MSDN string convretedColor = string.Format("#{0:X2}{1:X2}{2:X2}", _color.R, _color.G, _color.B) here is the result : profile : CoatedFOGRA27.icc Original Color : #2f00ff Converted Color :

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: If I had a RGB decimal such as 255, 165, 0 , what could I do to convert this to CMYK? For example: >>> red, green, blue = 255, 165, 0 >>> rgb_to_cmyk(red, green, blue) (0, 35, 100, 0) 回答1: Here's a Python port of a Javascript implementation . cmyk_scale = 100 def rgb_to_cmyk(r,g,b): if (r == 0) and (g == 0) and (b == 0): # black return 0, 0, 0, cmyk_scale # rgb [0,255] -> cmy [0,1] c = 1 - r / 255. m = 1 - g / 255. y = 1 - b / 255. # extract out k [0,1] min_cmy = min(c, m, y) c = (c - min_cmy) / (1 - min_cmy) m = (m - min_cmy) / (1 - min_cmy

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a PDF that consists of different color text and background color. How do I identify which colors are used in the PDF with CMYK or RGB format? StringBuilder sb_Sourcepdf = new StringBuilder(); PdfReader reader_FirstPdf = new PdfReader(pdf_of_FirstFile); Document document = new Document(); PDFParser parser = new PDFParser(new FileInputStream(pdf_of_FirstFile)); parser.parse(); PDDocument docum = parser.getPDDocument(); PDFStreamEngine engine = new PDFStreamEngine(); PDPage page = (PDPage)docum.getDocumentCatalog().getAllPages().get(0);

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I need to use CMYK colors on my web page. Is there any way to use CMYK in CSS or may be convert CMYK to RGB using JavaScript? EDIT: I mean I have colors creating algorithm in CMYK notation and I need to use it on web page. 回答1: There is no perfect algorithmic way to convert CMYK to RGB. CYMK is a subtractive color system, RGB is an additive color system. Each have different gamuts , which means there are colors that just cannot be represented in the other color system and vice versa. Both are device dependent color spaces, which really means