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Fix OpenCL's wrong output of calcOpticalFlowPyrLK function's output vector of err. Improve err's precison of the calcOpticalFlowPyrLK OpenCL function and add the relative test.

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LukeZhu
2017-04-19 15:49:42 +08:00
parent 833832ac91
commit 65be9e1978
3 changed files with 17 additions and 2 deletions
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modules/video/src/lkpyramid.cpp
+3
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@@ -849,6 +849,9 @@ namespace
return false;
if (maxLevel < 0 || winSize.width <= 2 || winSize.height <= 2)
return false;
if (winSize.width < 16 || winSize.height < 16 ||
winSize.width > 24 || winSize.height > 24)
return false;
calcPatchSize();
if (patch.x <= 0 || patch.x >= 6 || patch.y <= 0 || patch.y >= 6)
return false;
modules/video/src/opencl/pyrlk.cl
+2 -2
View File
@@ -260,7 +260,7 @@ inline void GetPatch(image2d_t J, float x, float y,
inline void GetError(image2d_t J, const float x, const float y, const float* Pch, float* errval)
{
float diff = read_imagef(J, sampler, (float2)(x,y)).x-*Pch;
float diff = (((read_imagef(J, sampler, (float2)(x,y)).x * 16384) + 256) / 512) - (((*Pch * 16384) + 256) /512);
*errval += fabs(diff);
}
@@ -526,6 +526,6 @@ __kernel void lkSparse(image2d_t I, image2d_t J,
nextPts[gid] = prevPt;
if (calcErr)
err[gid] = smem1[0] / (float)(c_winSize_x * c_winSize_y);
err[gid] = smem1[0] / (float)(32 * c_winSize_x * c_winSize_y);
}
}