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Summary

Description Illustration of en:Bilinear interpolation on a dataset. Compare with Image:Nearest2DInterpolExample.png and Image:BicubicInterpolationExample.png, they share the dataset.
Source self-made in en:Matlab
Author Berland

Matlab code

[Xcoarse, Ycoarse] = meshgrid([0 1 2 3], [0 1 2 3]);
[Xfine, Yfine] = meshgrid(linspace(0,3,1500), linspace(0,3,1500));
DataCoarse = [ 1 2 4 1; ...
               6 3 5 2; ...
               4 2 1 5; ...
               5 4 2 3];
DataBilinearFine = interp2(Xcoarse, Ycoarse, DataCoarse, Xfine, Yfine, 'bilinear');
figure
surf(Xfine, Yfine, DataBilinearFine); shading flat; colormap(jet); view(0, 90)
hold on; plot3(Xcoarse, Ycoarse, 10*ones(size(Xcoarse)), 'k.', 'MarkerSize', 20)
colorbar
print -dpng -r300 BilinearInterpolExample.png

The files have been cropped in gimp to remove the empty Matlab border.

Licensing

Public domain This work has been released into the public domain by its author, I, Berland. This applies worldwide.
In some countries this may not be legally possible; if so:
I, Berland grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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File history

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Date/TimeThumbnailDimensionsUserComment
current17:49, 3 June 2010Thumbnail for version as of 17:49, 3 June 20101,980 × 1,536 (57 KB)Aiyizolosslessly converted to 66 color mode.
08:28, 17 June 2008Thumbnail for version as of 08:28, 17 June 20081,980 × 1,536 (97 KB)Berlandsame picture regenerated with finer details.
09:32, 16 June 2008Thumbnail for version as of 09:32, 16 June 20081,318 × 1,032 (30 KB)Berland
10:54, 9 June 2008Thumbnail for version as of 10:54, 9 June 20081,308 × 1,042 (32 KB)BerlandReverted to version as of 10:45, 21 June 2007. Use another filename, as there is no longer match between image and text for this image.
08:08, 9 June 2008Thumbnail for version as of 08:08, 9 June 20081,024 × 1,024 (106 KB)Ti chrisBilinear image stretch of a 4x4 pixel grid Category:Image processing Category:Image processing
10:45, 21 June 2007Thumbnail for version as of 10:45, 21 June 20071,308 × 1,042 (32 KB)Berland== Summary == {{Information |Description=Illustration of en:Bilinear interpolation on a dataset. Compare with Image:Nearest2DInterpolExample.png and Image:BicubicInterpolationExample.png, they share the dataset. |Source=self-made in [[:en:M
21:26, 19 June 2007Thumbnail for version as of 21:26, 19 June 20071,032 × 889 (17 KB)Berland== Summary == {{Information |Description=Illustration of en:Bilinear interpolation on a dataset. Compare with Nearest2DInterpolExample.png and BicubicInterpolationExample.png, they share the dataset. |Source=self-made in en:Matlab |Date=

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