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cleanup code following https://stackoverflow.com/questions/45868943/convert-node-array-variable-lenght-to-a-const-float-to-call-opencv-calchist/45870887#45870887

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This commit is contained in:
Pierre Colle 2017-08-25 13:40:03 +02:00
parent fc5aa6bcc3
commit 47080c1895
1 changed files with 3 additions and 17 deletions
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20
src/Histogram.cc
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@ -43,6 +43,7 @@ NAN_METHOD(Histogram::CalcHist) {
Local<Array> nodeRanges = Local<Array>::Cast(info[3]->ToObject());
/// Set the ranges ( for B,G,R) )
float histRanges[dims][2];
const float* ranges[dims];
for (unsigned int i = 0; i < dims; i++) {
Local<Array> nodeRange = Local<Array>::Cast(nodeRanges->Get(i)->ToObject());
@ -50,24 +51,9 @@ NAN_METHOD(Histogram::CalcHist) {
float higher = nodeRange->Get(1)->NumberValue();
histRanges[i][0] = lower;
histRanges[i][1] = higher;
ranges[i] = histRanges[i];
}
float first_range[] = { histRanges[0][0], histRanges[0][1] };
float second_range[] = { 0, 0};
float third_range[] = { 0, 0};
if(dims >= 2){
second_range[0] = histRanges[1][0];
second_range[1] = histRanges[1][1];
}
if(dims >= 3){
third_range[0] = histRanges[2][0];
third_range[1] = histRanges[2][1];
}
const float* histRanges1[] = {first_range, second_range, third_range};
//const float** histRanges1 = const_cast<const float**>(histRanges);
// Arg 4 is uniform flag
@ -77,7 +63,7 @@ NAN_METHOD(Histogram::CalcHist) {
cv::Mat outputHist;
// Perform calcHist
cv::calcHist(&inputImage, 1, channels, cv::Mat(), outputHist, dims, histSize, histRanges1, uniform);
cv::calcHist(&inputImage, 1, channels, cv::Mat(), outputHist, dims, histSize, ranges, uniform);
// Wrap the output image
/*Local<Object> outMatrixWrap = Nan::NewInstance(Nan::GetFunction(Nan::New(Matrix::constructor)).ToLocalChecked()).ToLocalChecked();