minor gpu TVL1 optical flow optimization:

don't calc diff term if it is not used for epsilon criterion
11 years ago · de214950c4
parent 1a7c2eefb8
commit de214950c4
1 changed files with 2 additions and 1 deletions
--- a/modules/gpu/src/tvl1flow.cpp
+++ b/modules/gpu/src/tvl1flow.cpp
@ -222,6 +222,7 @@ void cv::gpu::OpticalFlowDual_TVL1_GPU::procOneScale(const GpuMat& I0, const Gpu
        {
            estimateU(I1wx, I1wy, grad, rho_c, p11, p12, p21, p22, u1, u2, diff, l_t, static_cast<float>(theta));

+            if (epsilon > 0)
                error = gpu::sum(diff, norm_buf)[0];

            estimateDualVariables(u1, u2, p11, p12, p21, p22, taut);