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POHow to obtain 256 bins/pixels from an LBP image?
 

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  1. POHow to obtain 256 bins/pixels from an LBP image?
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    <p>I am implementing uniform LBP in C. But I am confused regarding the concept. I have implemented LBP. Suppose i have an image of 512*512 dimensions. After LBP it will be 510*510. Now how to get 256 bins/pixels from this LBP image. </p> <pre><code>for(i=1; i &lt; image_src-&gt;width - 1; i++) { for(j=1; j &lt; image_src-&gt;height - 1; j++) { const unsigned char center = image_get_pixel_value(image_src, i, j , 0); unsigned char code = 0; if(center &lt;= image_get_pixel_value(image_src, i-1, j-1 , 0)) code += 128; if(center &lt;= image_get_pixel_value(image_src, i-1, j , 0)) code += 64; if(center &lt;= image_get_pixel_value(image_src, i-1, j+1 , 0)) code += 32; if(center &lt;= image_get_pixel_value(image_src, i, j+1 , 0)) code += 16; if(center &lt;= image_get_pixel_value(image_src, i+1, j+1 , 0)) code += 8; if(center &lt;= image_get_pixel_value(image_src, i+1, j , 0)) code += 4; if(center &lt;= image_get_pixel_value(image_src, i+1, j-1 , 0)) code += 2; if(center &lt;= image_get_pixel_value(image_src, i, j-1 , 0)) code += 1; image_set_pixel_value(image_tar, i-1, j-1, 0, code); } } </code></pre> <p>And this is the lookup table:</p> <pre><code>int UniformPattern59[16][16] = { 1, 2, 3, 4, 5, 0, 6, 7, 8, 0, 0, 0, 9, 0, 10, 11, 12, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 14, 0, 15, 16, 17, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 0, 19, 0, 0, 0, 20, 0, 21, 22, 23, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25, 0, 0, 0, 0, 0, 0, 0, 26, 0, 0, 0, 27, 0, 28, 29, 30, 31, 0, 32, 0, 0, 0, 33, 0, 0, 0, 0, 0, 0, 0, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 35, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 36, 37, 38, 0, 39, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 41, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 43, 44, 0, 45, 0, 0, 0, 46, 0, 0, 0, 0, 0, 0, 0, 47, 48, 49, 0, 50, 0, 0, 0, 51, 52, 53, 0, 54, 55, 56, 57, 58 }; </code></pre>
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