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  2. Visual cryptography - Wikipedia

    en.wikipedia.org/wiki/Visual_cryptography

    A demonstration of visual cryptography. When two same-sized images of apparently random black-and-white pixels are superimposed, the Wikipedia logo appears. In this example, the binary image has been split into two component images. Each component image has a pair of pixels for every pixel in the original image. These pixel pairs are shaded ...

  3. Reyes rendering - Wikipedia

    en.wikipedia.org/wiki/Reyes_rendering

    The output image is divided into a coarse grid of "buckets," each typically 16 by 16 pixels in size. The objects are then split roughly along the bucket boundaries and placed into buckets based on their location. Each bucket is diced and drawn individually, and the data from the previous bucket is discarded before the next bucket is processed.

  4. S-100 bus - Wikipedia

    en.wikipedia.org/wiki/S-100_bus

    The 100 lines of the S-100 bus can be grouped into four types: 1) Power, 2) Data, 3) Address, and 4) Clock and control. [ 1 ] Power supplied on the bus is bulk unregulated +8 Volt DC and ±16 Volt DC, designed to be regulated on the cards to +5 V (used by TTL ICs), -5 V and +12 V for Intel 8080 CPU IC, ±12 V RS-232 line driver ICs, +12 V for ...

  5. Split and merge segmentation - Wikipedia

    en.wikipedia.org/wiki/Split_and_merge_segmentation

    The image is successively split into quadrants based on a homogeneity criterion and similar regions are merged to create the segmented result. The technique incorporates a quadtree data structure, meaning that there is a parent-child node relationship.

  6. Macroblock - Wikipedia

    en.wikipedia.org/wiki/Macroblock

    In H.261, the first video codec to use macroblocks, transform blocks have a fixed size of 8×8 samples. [1] In the YCbCr color space with 4:2:0 chroma subsampling, a 16×16 macroblock consists of 16×16 luma (Y) samples and 8×8 chroma (Cb and Cr) samples. These samples are split into four Y blocks, one Cb block and one Cr block.

  7. Quadtree - Wikipedia

    en.wikipedia.org/wiki/Quadtree

    A quadtree is a tree data structure in which each internal node has exactly four children. Quadtrees are the two-dimensional analog of octrees and are most often used to partition a two-dimensional space by recursively subdividing it into four quadrants or regions. The data associated with a leaf cell varies by application, but the leaf cell ...

  8. Smacker video - Wikipedia

    en.wikipedia.org/wiki/Smacker_video

    The two full modes added in version 4 use 4 and 8 colors in a block, respectively. [2] In the 4-color mode, the 4×4 block is split into four 2×2 blocks, each of which is filled with a solid color. In the 8-color mode, the 4×4 block is split into eight 1×2 blocks, each of which is filled with a solid color.

  9. Firing squad synchronization problem - Wikipedia

    en.wikipedia.org/wiki/Firing_squad...

    The fast wave bounces off the other end of the line and meets the slow wave in the centre. The two waves then split into four waves, a fast and slow wave moving in either direction from the centre, effectively splitting the line into two equal parts. This process continues, subdividing the line until each division is of length 1.