Luma

Luma or LUMA may refer to :

Luma (video)

In video, luma represents the brightness in an image (the "black-and-white" or achromatic portion of the image). Luma is typically paired with chrominance. Luma represents the achromatic image, while the chroma components represent the color information. Converting R'G'B' sources (such as the output of a 3CCD camera) into luma and chroma allows for chroma subsampling: because human vision has finer spatial sensitivity to luminance ("black and white") differences than chromatic differences, video systems can store chromatic information at lower resolution, optimizing perceived detail at a particular bandwidth.

Luma versus luminance

Luma is the weighted sum of gamma-compressed R'G'B' components of a color video – the prime symbols (') denote gamma-compression. The word was proposed to prevent confusion between luma as implemented in video engineering and luminance as used in color science (i.e. as defined by CIE). Luminance is formed as a weighted sum of linear RGB components, not gamma-compressed ones. Even so, luma is erroneously called luminance.SMPTE EG 28 recommends the symbol Y' to denote luma and the symbol Y to denote luminance.

List of Mario franchise characters

The Mario franchise is a series of video games developed and published by Nintendo. The franchise features an extensive cast of characters.

For the main characters that appear under the franchises of spinoff series Donkey Kong and Wario, please refer to list of Donkey Kong characters and list of Wario characters.

All supporting characters and antagonists are listed in alphabetical order.

Main characters

Mario

Luigi

Princess Peach

Yoshi

Toad

Donkey Kong

Supporting characters

Baby Luma

Baby Luma (ベビィチコ, Bebi Chiko) is Mario's main companion in Super Mario Galaxy and its direct sequel Super Mario Galaxy 2.

In Super Mario Galaxy Baby Luma first finds Mario sleeping in the planet that houses the Gateway to the Starry Sky after he has been blasted out of the Mushroom World, and joins him at the request of Rosalina, aiding him in his quest to rescue Princess Peach from Bowser by allowing him to use the "Spin" move, which he can use to break crystals, attack enemies and further his jumps, among other things. In the ending of the game, Baby Luma sacrifices his life along his brethren to save the universe from a black hole.