What does the term xvYCC color standard mean?

What does the term xvYCC color standard mean?

What does the term xvYCC color standard mean? The term xvYCC refers to Extended-gamut YCC. This is a color space that is used in some video electronics. This color space supports 1.8 times more colors than the sRGB color space. An xvYCC display, together with Deep Color to minimize posterization, can display all of the full range of colors that can be viewed by the human eye. Between xvYCC display and deep color, the two of these technologies are the basis for the color specification of HDMI 1.3 The standard for xvYCC was specified by the IEC in October 2005 . This standard was published as IEC 61966-2-4 in January 2006. The wider spectrum of cold cathodes being replaced by LED back lighting has enabled this LCD display extension of the color gamut.

Posterization is the effect that is produced when a small number of colors or shades of gray is utilized to display or print a photographic image.

The noteworthy addition to the new HDMI 1.3 specifications is the support for 30-, 36-, and 48-bit RGB or deep color, a specification that takes color depths beyond what the human eye can see. The standard that governs today's displays is called the ITU 601 standard. This standard will only allow a display of 60 to 80 percent of all the variety of available colors, even if the display unit itself is capable of supporting more color space than this.. Most of the displays only have a color bit depth of usually 24 bits RGB. This color bit depth will give sixteen million colors and that is distinguishable by the human eye. This is the cause of onscreen effects and scaling which may noticeable by some people. With 36 color bit depth, and 48 color bit depth the human eye does not have the ability to distinguish these optical effects. A device that has the capability to directly display colors in a specific format without having to minimize the number of colors by software is called a deep color device. This extra bit depth is needed to minimize posterization with extended gamuts such as xvYCC. Deep color may also be referred to as xvYCC, or Extended gamut YCC.

Researchers have estimated that the amount of colors seen by the human eyes number in the tens of thousands. But, depending on the lighting conditions and any surrounding colors, a human eye can tell the difference between millions of differing shades, an example is that you’ll be able to distinguish many more shades of black in darkness than you can see in brightness, so the additional shades will show a noticeable difference. What deep colors actually means is that there are more colors. Plus a higher bit resolution can display more shades of gray. With 30 bit color depth four times more gray can be represented. Eight times more gray, or even higher, can be represented by a 36 or 48 color bit depth. But it doesn't do any good if the deep colors don't have the color space, or xvYCC, to display all of these colors.

XvYCC is a color gamut. This term means that it consists of the entire range of colors that are available on a certain device such as a monitor or television. When a color is said to be "out of gamut," this means that the color cannot be correctly converted to the target device.

The term xvYCC color standard refers to the color space, not the color depth. These are two different terms that work together. It may be easy to confuse the two but they are not the same thing. Deep color refers to the color bit depth, and xvYCC color standard refers to the color space.

HDMI 1.3 specifications include both of these color standards. XvYCC and deep color are the newest color standards and specifications for the motion picture industry and for makers of consumer electronics products.