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File:Bilininterp.png

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    Original file (1,002 × 801 pixels, file size: 27 KB, MIME type: image/png)

    Summary

    Own work.

    Illustrates bilinear interpolation on the unit square. The four corners have fixed values as indicated in the figure, and the values in between are interpolated, and the interpolated values are represented by the colour.

    Done in Matlab, source code: 

    # Grid of known points:
>> [X, Y] = meshgrid(0:1)
# Grid for interpolated values:
>> [XI,YI] = meshgrid(0:0.001:1);
# Known values to interpolate from:
>> Z = [0 1; 1 0.5]
# Do bilinear interpolation
>> ZI = interp2(X,Y,Z,XI,YI);
# Visualize result:
>> surf(XI,YI,ZI, 'EdgeColor','none'); alpha(0.9)
>> view([0 90])
>> print -dpng Bilininterp.png

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    Licensing

    Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
    In some countries this may not be legally possible; if so:
    I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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    media type

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    checksum

    6f32086b17f8bf437dad2f68a9540490d19937ef

    determination method or standard: SHA-1

    data size

    27,711 byte

    height

    801 pixel

    width

    1,002 pixel

    File history

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    Date/TimeThumbnailDimensionsUserComment
    current09:12, 30 June 2023Thumbnail for version as of 09:12, 30 June 20231,002 × 801 (27 KB)PhreneticcReduced file weight with FileOptimizer in lossless compression mode.
    20:18, 21 March 2007Thumbnail for version as of 20:18, 21 March 20071,002 × 801 (37 KB)BerlandOwn work. Illustrates bilinear interpolation on the unit square. The four corners have fixed values as indicated in the figure, and the values in between are interpolated, and the interpolated values are represented by the colour.

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