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- <title>Generic Image Library: Pixel</title>
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- <div class="title">Pixel</div> </div>
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- <p>A pixel is a set of channels defining the color at a given point in an image.
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- <p>A pixel is a set of channels defining the color at a given point in an image. </p>
- <p>Conceptually, a pixel is little more than a color base whose elements model <code>ChannelConcept</code>. Many properties of pixels inherit from color bases: pixels may be <em>homogeneous</em> if all of their channels have the same type; otherwise they are called <em>heterogeneous</em>. The channels of a pixel may be addressed using semantic or physical indexing, or by color; all color base algorithms work on pixels as well. Two pixels are <em>compatible</em> if their color spaces are the same and their channels, paired semantically, are compatible. Note that constness, memory organization and reference/value are ignored. For example, an 8-bit RGB planar reference is compatible to a constant 8-bit BGR interleaved pixel value. Most pairwise pixel operations (copy construction, assignment, equality, etc.) are only defined for compatible pixels. </p>
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