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Fix an arg for calcHist() in demos

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`float* histRange = { range };` doesn't make much sense. `histRange` is
an array of array(s), so it should have a type of ptr to ptr. Strangely
some domos are correct as well as the example for the function
https://docs.opencv.org/master/d6/dc7/group__imgproc__hist.html#ga4b2b5fd75503ff9e6844cc4dcdaed35d
This commit is contained in:
Vladimir 2021-06-30 10:15:58 +03:00
parent 828304d587
commit 90be83ae99
3 changed files with 8 additions and 8 deletions
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6
samples/cpp/tutorial_code/Histograms_Matching/calcBackProject_Demo1.cpp
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@ -72,18 +72,18 @@ void Hist_and_Backproj(int, void* )
//! [initialize]
int histSize = MAX( bins, 2 );
float hue_range[] = { 0, 180 };
const float* ranges = { hue_range };
const float* ranges[] = { hue_range };
//! [initialize]
//! [Get the Histogram and normalize it]
Mat hist;
calcHist( &hue, 1, 0, Mat(), hist, 1, &histSize, &ranges, true, false );
calcHist( &hue, 1, 0, Mat(), hist, 1, &histSize, ranges, true, false );
normalize( hist, hist, 0, 255, NORM_MINMAX, -1, Mat() );
//! [Get the Histogram and normalize it]
//! [Get Backprojection]
Mat backproj;
calcBackProject( &hue, 1, 0, hist, backproj, &ranges, 1, true );
calcBackProject( &hue, 1, 0, hist, backproj, ranges, 1, true );
//! [Get Backprojection]
//! [Draw the backproj]

8
samples/cpp/tutorial_code/Histograms_Matching/calcHist_Demo.cpp
View File

@ -37,7 +37,7 @@ int main(int argc, char** argv)
//! [Set the ranges ( for B,G,R) )]
float range[] = { 0, 256 }; //the upper boundary is exclusive
const float* histRange = { range };
const float* histRange[] = { range };
//! [Set the ranges ( for B,G,R) )]
//! [Set histogram param]
@ -46,9 +46,9 @@ int main(int argc, char** argv)
//! [Compute the histograms]
Mat b_hist, g_hist, r_hist;
calcHist( &bgr_planes[0], 1, 0, Mat(), b_hist, 1, &histSize, &histRange, uniform, accumulate );
calcHist( &bgr_planes[1], 1, 0, Mat(), g_hist, 1, &histSize, &histRange, uniform, accumulate );
calcHist( &bgr_planes[2], 1, 0, Mat(), r_hist, 1, &histSize, &histRange, uniform, accumulate );
calcHist( &bgr_planes[0], 1, 0, Mat(), b_hist, 1, &histSize, histRange, uniform, accumulate );
calcHist( &bgr_planes[1], 1, 0, Mat(), g_hist, 1, &histSize, histRange, uniform, accumulate );
calcHist( &bgr_planes[2], 1, 0, Mat(), r_hist, 1, &histSize, histRange, uniform, accumulate );
//! [Compute the histograms]
//! [Draw the histograms for B, G and R]