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This is achieved by encoding RGB image data into a composite black and white image, with separated color difference data . For example with Y ′ C b C r {\displaystyle Y'C_{b}C_{r}} , gamma encoded R ′ G ′ B ′ {\displaystyle R'G'B'} components are weighted and then summed together to create the luma Y ′ {\displaystyle Y'} component.
It is a way of encoding RGB information, and the actual color displayed depends on the actual RGB colorants used to display the signal. Therefore, a value expressed as Y′UV is only predictable if standard RGB colorants are used (i.e. a fixed set of primary chromaticities, or particular set of red, green, and blue).
It can handle color spaces such as YUV422 (ULY2), RGB (ULRG), RGBA (ULRA) and, most recently, YUV420 (ULY0). It has both x86 and x64 builds. Due to its multithreading support, this codec is also capable of encoding HDTV material in real time. The codec requires support for the SSE2 instruction set because it is heavily used for speed ...
YCbCr is sometimes abbreviated to YCC.Typically the terms Y′CbCr, YCbCr, YPbPr and YUV are used interchangeably, leading to some confusion. The main difference is that YPbPr is used with analog images and YCbCr with digital images, leading to different scaling values for U max and V max (in YCbCr both are ) when converting to/from YUV.
For example, applying a histogram equalization directly to the channels in an RGB image would alter the color balance of the image. Instead, the histogram equalization is applied to the Y channel of the YIQ or YUV representation of the image, which only normalizes the brightness levels of the image.
Again, the difference between 5 million colors and RGB TruColor is virtually invisible to the human eye as for the number of *DIFFERENT COLOR VALUES* between pure black and pure white, but this latter fact requires different gamma correction per color channel in order to convert between YUV and RGB, instead of one global gamma value for all ...
Video converter Developer License Supported platform Windows Mac OS X Linux Any Video Converter: Anvsoft Inc. Freeware: Yes: Yes: No Avidemux: Mean, Gruntster, Fahr: GPL-2.0-or-later: Yes: Yes: Yes Dr. DivX: DivX, Inc. Adware bundled 15-day trial: Yes: Yes: No DVDVideoSoft Free Studio: DVDVideoSoft: Shareware (requires paid membership for basic ...
RGB channels roughly follow the color receptors in the human eye, and are used in computer displays and image scanners. If the RGB image is 24-bit (the industry standard as of 2005), each channel has 8 bits, for red, green, and blue—in other words, the image is composed of three images (one for each channel), where each image can store ...