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The files in this directory are a few sample images and documents
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stored as raw bi-level image entities (BIE) (the data stream specified
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by the JBIG standard).
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The source data for the test examples ccitt* and lena.bie is available from
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ftp://ftp.funet.fi/pub/graphics/misc/test-images/
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% MATLAB code to generate test files that exercise a JBIG codec
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width = 1200;
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img = [];
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for y=1:650;
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mx = ceil(y / 5);
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line = uint8(repmat(round(rand(1,mx)),1,ceil(width/mx))) == 1;
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img = [img ; line(1:width)];
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end
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imwrite(img, 'mx.png', 'PNG');
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P5
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2
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2
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4294967295
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abcdABCD9876WXYZ
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After Width: | Height: | Size: 73 KiB |
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