Search results
Results from the WOW.Com Content Network
A 2-bit indexed color image. The color of each pixel is represented by a number; each number (the index) corresponds to a color in the color table (the palette).. In computing, indexed color is a technique to manage digital images' colors in a limited fashion, in order to save computer memory and file storage, while speeding up display refresh and file transfers.
Some indexed color image file formats as GIF natively support the designation of a given palette entry as transparent, freely selectable among any of the palette entries used for a given image. The BMP file format reserves space for Alpha channel values in its Color Table, [ 2 ] however currently this space is not being used to hold any ...
An image file format is a file format for a digital image. ... Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel.
This is indexed in the BITMAPINFOHEADER in the structure member biBitCount. The color table is a block of bytes (a table) listing the colors used by the image. Each pixel in an indexed color image is described by a number of bits (1, 4, or 8) which is an index of a single color described by this table.
In 1999, Industrial Light & Magic released the open standard image file format OpenEXR which supported 16-bit-per-channel half-precision floating-point numbers. At values near 1.0, half precision floating point values have only the precision of an 11-bit integer value, leading some graphics professionals to reject half-precision in situations ...
Portable Bitmap File Format ASCII.pbm image/x-portable-bitmap Yes PCX: ZSoft PC Paintbrush File ZSoft Corporation.pcx, .pcc, .dcx image/x-pcx Dated rle packed indexed image format, used in some early 3d shooting games like Unreal Tournament as it takes up very little space and is easy to decode. ? PDF: Portable Document Format Adobe Systems.pdf ...
For each unique palette, an image color test chart and sample image (truecolor original follows) rendered with that palette (without dithering) are given. 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.
Many image file formats support indexed color. A whole-image palette typically selects 256 "representative" colors for the entire image, where each pixel references any one of the colors in the palette, as in the GIF and PNG file formats. A block palette typically selects 2 or 4 colors for each block of 4x4 pixels, used in BTC, CCC, S2TC, and S3TC.