passing index Parameters for Flann matcher using opencv on android -


i'm trying customize flann matcher in opencv editing index parameters, i'm using java android, , don't know how works.
found answer don't know how apply in correct way here code i've tried

    string yamlparam="%yaml:1.0\n"             + "indexparams:\n"             + "   -\n"             + "      name: algorithm\n"             + "      type: 23\n"             + "      value: 1\n"             + "   -\n"             + "      name: trees\n"             + "      type: 4\n"             + "      value: 4\n";      file outputf = file.createtempfile("flannfdetectorparams", ".yaml", outputdir);     writetofile(outputf,yamlparam);     descriptormatcher.read(outputf.getpath());

and here's error i'm getting

opencv error: assertion failed (sp.type() == filenode::seq) in virtual void cv::flannbasedmatcher::read(const cv::filenode &)

you have use full format of yml configuration file:

%yaml:1.0 --- format: 3 indexparams:    -       name: algorithm       type: 23       value: 1    -       name: trees       type: 4       value: 4 searchparams:    -       name: checks       type: 4       value: 32    -       name: eps       type: 5       value: 0.    -       name: sorted       type: 15       value: 1

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