From: Tauranis <rodrigodefreitas12@gmail.com>
Date: Tue, 12 Apr 2016 11:28:38 +0000 (-0300)
Subject: Bug fix for MLP predict for small values to avoid nan responses.
X-Git-Tag: accepted/tizen/6.0/unified/20201030.111113~1912^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=edb6a0e889886c958c908a61a38d8a0953efcf00;p=platform%2Fupstream%2Fopencv.git

Bug fix for MLP predict for small values to avoid nan responses.
---

diff --git a/modules/ml/src/ann_mlp.cpp b/modules/ml/src/ann_mlp.cpp
index 19ee913..8974b6b 100644
--- a/modules/ml/src/ann_mlp.cpp
+++ b/modules/ml/src/ann_mlp.cpp
@@ -432,8 +432,15 @@ public:
                     double* data = sums.ptr<double>(i);
                     for( j = 0; j < cols; j++ )
                     {
-                        double t = scale2*(1. - data[j])/(1. + data[j]);
-                        data[j] = t;
+                        if(!cvIsInf(data[j]))
+                        {
+                            double t = scale2*(1. - data[j])/(1. + data[j]);
+                            data[j] = t;
+                        }
+                        else
+                        {
+                            data[j] = -scale2;
+                        }
                     }
                 }
                 break;