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One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image .
PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and full-color non-palette-based RGB or RGBA images. The PNG working group designed the format for transferring images on the Internet, not for professional-quality print graphics ...
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Original file (2,000 × 1,535 pixels, file size: 899 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
In computer graphics, a palette is the set of available colors from which an image can be made. In some systems, the palette is fixed by the hardware design, and in others it is dynamic, typically implemented via a color lookup table (CLUT), a correspondence table in which selected colors from a certain color space's color reproduction range are assigned an index, by which they can be referenced.
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.
This image is believed to be non-free or possibly non-free in its home country, China. In order for Commons to host a file, it must be free in its home country and in the United States. Some countries, particularly other countries based on common law, have a lower threshold of originality than the United States.
The Coexist image created by Piotr Młodożeniec The Coexist image (often styled as "CoeXisT" or "COEXIST") is an image created by Polish, Warsaw -based graphic designer Piotr Młodożeniec [ pl ] in 2000 as an entry in an international art competition sponsored by the Museum on the Seam for Dialogue, Understanding and Coexistence .