From: marina.kolpakova <marina.kolpakova@itseez.com>
Date: Thu, 13 Dec 2012 10:31:28 +0000 (+0400)
Subject: fix inintial weighting
X-Git-Tag: accepted/tizen/6.0/unified/20201030.111113~4025^2~64
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1f01052955b2e003c2484e49857fef9ad6d41116;p=platform%2Fupstream%2Fopencv.git

fix inintial weighting
---

diff --git a/apps/sft/octave.cpp b/apps/sft/octave.cpp
index e886fbd..6a02d54 100644
--- a/apps/sft/octave.cpp
+++ b/apps/sft/octave.cpp
@@ -382,8 +382,8 @@ void sft::Octave::write( cv::FileStorage &fso, const Mat& thresholds) const
 void sft::Octave::initial_weights(double (&p)[2])
 {
     double n = data->sample_count;
-    p[0] =  n / (double)(nnegatives) ;
-    p[1] =  n / (double)(npositives);
+    p[0] =  n / (2. * (double)(nnegatives));
+    p[1] =  n / (2. * (double)(npositives));
 }
 
 bool sft::Octave::train(const Dataset& dataset, const FeaturePool& pool, int weaks, int treeDepth)