nlmeans - add an eps to denominator variance

cbbdf8d1 · actb · 7a8ae0fd · cbbdf8d1 · cbbdf8d1 · cbbdf8d1
Commit cbbdf8d1 authored 4 years ago by actb
--- a/src/MATLAB/+HIP/@Cuda/HIP.mexw64
+++ b/src/MATLAB/+HIP/@Cuda/HIP.mexw64
--- a/src/Python/HIP.pyd
+++ b/src/Python/HIP.pyd
--- a/src/c/Cuda/CudaNLMeans.cuh
+++ b/src/c/Cuda/CudaNLMeans.cuh
@@ -50,7 +50,7 @@ __global__ void cudaNLMeans_mv(CudaImageContainer<PixelTypeIn> imageIn, CudaImag
 			float kernelVarVal = (float)imageVariance(kernelPos);
 			float kernelVal = (float)imageIn(kernelPos);

-			double w = SQR(inputMeanVal - kernelMeanVal) / (inputVarVal + kernelVarVal);
+			double w = SQR(inputMeanVal - kernelMeanVal) / (inputVarVal + kernelVarVal + 1e-9);
 			w= exp(-w / SQR(h));
 			if (w > wMax)
 				wMax = w;