Colourspaces (JPEG Pt0)- Computerphile
Computerphileγ»2 minutes read
Monitors use RGB, printers use CMYK; YCbCr is used in TV broadcasting to separate luminosity from color, with values ranging for different manipulations in a cube.
Insights
- Monitors use RGB format for images, printers use CMYK format, and YCbCr is prevalent in high-definition video and TV broadcasting, each optimized for their respective display mediums.
- RGB combines red, green, and blue for colors, CMYK uses cyan, yellow, magenta, and black for depth, while YCbCr separates luminosity from chrominance, offering versatile manipulations in a cube of color values.
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Recent questions
What colors make up RGB format?
Red, green, blue
What colors are used in CMYK format?
Cyan, yellow, magenta, black
What does YCbCr separate in video broadcasting?
Luminosity from color
What is the range of YCbCr values?
0 to 255 for luminosity, -127 to 128 for chrominance
Which color format is ideal for TV broadcasting?
YCbCr
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Summary
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Color Formats: RGB, CMYK, YCbCr Explained
- Monitors typically use RGB format for images, while printers use CMYK format.
- RGB consists of red, green, and blue colors, which when combined create different colors and white; printers work differently, with cyan, yellow, and magenta creating colors and black added for depth.
- YCbCr is commonly used in high-definition video and TV broadcasting to separate luminosity from color, allowing for clever manipulations.
- YCbCr separates luminosity (Y) from chrominance (CB and CR), representing the intensity and color values of pixels.
- YCbCr values range from 0 to 255 for luminosity and -127 to 128 for chrominance, creating a cube where gray is at the center and colors vary based on CB and CR values.
- RGB is widely supported for monitors, CMYK is essential for printing, and YCbCr is ideal for TV broadcasting due to its compression capabilities.
