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  2. Cartesian Perceptual Compression - Wikipedia

    en.wikipedia.org/wiki/Cartesian_Perceptual...

    It was designed for high compression of black-and-white raster Document Imaging for archival scans. CPC is lossy , has no lossless mode, and is restricted to bi-tonal images. The company which controls the patented format claims it is highly effective in the compression of text, black-and-white (halftone) photographs , and line art.

  3. Plotting algorithms for the Mandelbrot set - Wikipedia

    en.wikipedia.org/wiki/Plotting_algorithms_for...

    The top row is a series of plots using the escape time algorithm for 10000, 1000 and 100 maximum iterations per pixel respectively. The bottom row uses the same maximum iteration values but utilizes the histogram coloring method. Notice how little the coloring changes per different maximum iteration counts for the histogram coloring method plots.

  4. Temporal raster plot - Wikipedia

    en.wikipedia.org/wiki/Temporal_Raster_Plot

    A temporal raster plot is a graphic representation of occurrences in a certain temporal relation. Temporal raster plots are also sometimes referred to as carpet plots . Each occurrence is registered in a Cartesian coordinate system, in which both axes show time but have different time resolutions: one axis shows slices of data, the other some ...

  5. Carpet plot - Wikipedia

    en.wikipedia.org/wiki/Carpet_plot

    A carpet plot with two independent variables and one dependent variable is often called a cheater plot for the use of a phantom "cheater" axis instead of the horizontal axis. As a result of this missing axis, the values can be shifted horizontally such that the intersections line up vertically.

  6. Bresenham's line algorithm - Wikipedia

    en.wikipedia.org/wiki/Bresenham's_line_algorithm

    Plotting the line from (0,1) to (6,4) showing a plot of grid lines and pixels. All of the derivation for the algorithm is done. One performance issue is the 1/2 factor in the initial value of D. Since all of this is about the sign of the accumulated difference, then everything can be multiplied by 2 with no consequence.

  7. Ikeda map - Wikipedia

    en.wikipedia.org/wiki/Ikeda_map

    In physics and mathematics, the Ikeda map is a discrete-time dynamical system given by the complex map + = + (| | +) The original map was proposed first by Kensuke Ikeda as a model of light going around across a nonlinear optical resonator ( ring cavity containing a nonlinear dielectric medium) in a more general form.

  8. GDAL - Wikipedia

    en.wikipedia.org/wiki/GDAL

    The Geospatial Data Abstraction Library (GDAL) is a computer software library for reading and writing raster and vector geospatial data formats (e.g. shapefile), and is released under the permissive X/MIT style free software license by the Open Source Geospatial Foundation.

  9. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...