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    <p>The nose getting green means you have overflows in your code, but that's strange because a median filter should never generate overflows. You surely have a messed up code there, the kernel doesn't make much sense especially the lots of extra work you're doing.</p> <p>In non linear filters I suggest you try implementing Min or Max filters first to see if they work. Here's a working code for Max Filter from <a href="http://cuvilib.com/" rel="nofollow">CUVI</a> Library for CUDA. Your Median kernel should be no different than this:</p> <pre><code>__global__ void median_8u_c3( unsigned char* out, unsigned int width, unsigned int widthStep, unsigned int height){ int xIndex = blockIdx.x*BLOCK_SIZE + threadIdx.x; int yIndex = blockIdx.y*BLOCK_SIZE + threadIdx.y; int tid = yIndex * widthStep + (3*xIndex); if(xIndex&gt;=width|| yIndex&gt;=height) return; int limitX = anchorX + fHeight - 1; int limitY = anchorY + fWidth - 1; unsigned char MAX_R = 0 , MAX_G = 0, MAX_B = 0; // Instead of Max filter code in the for loops below, you can have median code for(Cuvi32s i=anchorX ; i&lt;= limitX; i++) for(Cuvi32s j=anchorY ; j&lt;= limitY; j++) { MAX_R = (tex2D(tex8,3*(xIndex + i) , yIndex + j) &gt; MAX_R) ? tex2D(tex8,3*(xIndex + i) , yIndex + j) : MAX_R; MAX_G = (tex2D(tex8,3*(xIndex + i)+1, yIndex + j) &gt; MAX_G) ? tex2D(tex8,3*(xIndex + i)+1, yIndex + j) : MAX_G; MAX_B = (tex2D(tex8,3*(xIndex + i)+2, yIndex + j) &gt; MAX_B) ? tex2D(tex8,3*(xIndex + i)+2, yIndex + j) : MAX_B; } out[tid] = MAX_R; out[tid + 1] = MAX_G; out[tid + 2] = MAX_B; } </code></pre> <p>Note: I'm using input from Textures.</p>
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    1. POCUDA Median filter not working properly
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    1. USjwdmsd
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    1. COIs cuvi library open source? And what is `Cuvi32s`?
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    2. CONo, it's not open source. Cuvis32s is 'int'
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