To convert an RGB file to a target CMYK space, open the image file in Photoshop, then go to Edit > Convert to Profile. Once there, select your target profile (a copy of which should be in the [Your Computer] > Library > ColorSync > Profiles folder, or else it will not appear in the pulldown menu). Then select a rendering intent appropriate for 3. You can either import PIL and convert the image from BGR to CMYK, or do it in openCV in a more "analytical" way. From the known relations between BGR and CMYK, you can write a code like this: import cv2 import numpy as np bgr = cv2.imread ('your_image.jpg') #your bgr image bgrdash = bgr.astype (np.float)/255.
Converting RGB to CMYK. I have a black-and-white, multipage PDF of line drawings that I created in RGB and put into Pages, which I then exported to a PDF. There are many print options and I'm wondering which are best. I figure I should do Preserve Black and Promote Gray to Black (though there is no gray, just RGB black but I think it can't hurt).
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This tool is a free online color converter between two color formats RGB and CMYK. The tool is fast and very simple to use. All Tools (10) RGB: Red (min: 0, max: 255): Green (min: 0, max: 255): Blue (min: 0, max: 255): cmyk (0%, 0%, 90%, 21.57%) Cyan: 0 %.
What to do: Ask for the CMYK profile. If they do not say a word, use a generic one, but USE ONE. Fogra 39 is commonly used for Digital print. If the printing company has no clue or just says "whatever" yes, just use it. Confirm the resolution. For a digital banner, 150 PPI is fine. You do not "need" to send a Tif file.
1 Answer. Essentially yes. InDesign, when exporting to a press-ready format, will convert RGB images to CMYK based on your assigned color profile settings. So theoretically you could use RGB images in everything and allow Adobe and your color setting to handle all conversions. This will work. However, in many cases you may want to verify color NIdcZhh.
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    • can you convert rgb to cmyk