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RGBA stands for red green blue alpha. While it is sometimes described as a color space, it is actually a three-channel RGB color model supplemented with a fourth alpha channel. Alpha indicates how opaque each pixel is and allows an image to be combined over others using alpha compositing, with transparent areas and anti-aliasing of the edges of ...
A diagram demonstrating additive color with RGB. The RGB color model is an additive color model [1] in which the red, green and blue primary colors of light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue.
The test chart shows the full 256 levels of the red, green, and blue (RGB) primary colors and cyan, magenta, and yellow complementary colors, along with a full 256-level grayscale. Gradients of RGB intermediate colors (orange, lime green, sea green, sky blue, violet, and fuchsia), and a full hue spectrum are also present.
Adobe isn't the first to dream of a better color picker -- Corel's Paint Shop Pro includes an advanced color mixer, for instance. However, Adobe Research's concept is perhaps the most like a ...
lossless image format. Website. radsite .lbl .gov /radiance /refer /filefmts .pdf. RGBE or Radiance HDR is an image format invented by Gregory Ward Larson for the Radiance rendering system. It stores pixels as one byte each for RGB (red, green, and blue) values with a one byte shared exponent. Thus it stores four bytes per pixel.
The Hex Color Picker is a very handy tool for web designers who code by hand and need to specify colors by hex code. It adds a sixth tab to OS X's standard Colors palette. The idea is basically ...
The so-called PaintsChainer project can take your basic line art, created using whatever drawing program you happen to use, in a number of ordinary file formats, including JPG, PNG, GIF or even ...
Main article: RGB color model. Media that transmit light (such as television) use additive colormixing with primary colorsof red, green, and blue, each of which stimulates one of the three types of the eye's color receptors with as little stimulation as possible of the other two. This is called "RGB" color space.