saving untrained SVM model (Bug #3462)

Added by Amro _ about 11 years ago. Updated almost 11 years ago.

Status:Done Start date:2013-12-28
Priority:Low Due date:
Assignee:Daniil Osokin % Done:

0%
Category:ml
Target version:2.4.9
Affected version:branch '2.4' (2.4-dev) Operating System:Windows
Difficulty:Easy HW Platform:x64
Pull request:https://github.com/Itseez/opencv/pull/2140

Description

Trying to save a newly created SVM model before training it will result in a crash. Example:

#include "opencv2/opencv.hpp" 
#include "opencv2/ml/ml.hpp" 
using namespace cv;

int main()
{
    Ptr<SVM> svm = new SVM();
    svm->save("svm.xml");
    return 0;
}

The offending code: https://github.com/Itseez/opencv/blob/2.4/modules/ml/src/svm.cpp#L2353 (df is uninitialized but df_count gets set to 1 on line 2347). A possible fix is to set df_count=0 in case class_count == 0, thus not entering the loop..

This was initially reported on Stack Overflow: http://stackoverflow.com/a/20811401

History

#1
Updated by Daniil Osokin about 11 years ago

  • Target version set to 2.4.9
  • Pull request set to https://github.com/Itseez/opencv/pull/2140
  • Affected version changed from 2.4.7 (latest release) to branch '2.4' (2.4-dev)
  • Assignee changed from Maria Dimashova to Daniil Osokin

#2
Updated by Andrew Senin about 11 years ago

  • Status changed from New to Open

#3
Updated by Alexander Smorkalov almost 11 years ago

  • Status changed from Open to Done

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