For example, in the ZX Spectrum the picture is stored in a two-color format, but these two colors can be separately defined for each rectangular block of 8×8 pixels.
Old graphics chips, particularly those used in home computers and video game consoles, often have the ability to use a different palette per sprites and tiles in order to increase the maximum number of simultaneously displayed colors, while minimizing use of then-expensive memory (and bandwidth). Modifiable palettes are sometimes referred to as pseudocolor palettes. The colors available in the palette itself may be fixed by the hardware or modifiable by software. With the relatively low color depth, the stored value is typically a number representing the index into a color map or palette (a form of vector quantization). The number of bits of resolved intensity in a color channel is also known as radiometric resolution, especially in the context of satellite images.
#How to increase number of highlight colors in word code#
The definition of both color precision and gamut is accomplished with a color encoding specification which assigns a digital code value to a location in a color space. Ĭolor depth is only one aspect of color representation, expressing the precision with which the amount of each primary can be expressed the other aspect is how broad a range of colors can be expressed (the gamut). When referring to a color component, the concept can be defined as bits per component, bits per channel, bits per color (all three abbreviated bpc), and also bits per pixel component, bits per color channel or bits per sample (bps).
When referring to a pixel, the concept can be defined as bits per pixel (bpp). For consumer video standards, the bit depth specifies the number of bits used for each color component. Number of bits used to indicate the color of a single pixel or number of bits used for each color component of a single pixelĬolor depth or colour depth (see spelling differences), also known as bit depth, is either the number of bits used to indicate the color of a single pixel, in a bitmapped image or video framebuffer, or the number of bits used for each color component of a single pixel.
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