|
|
|
@ -84,88 +84,10 @@ Code |
|
|
|
|
|
|
|
|
|
* **Code at glance:** |
|
|
|
|
|
|
|
|
|
.. code-block:: cpp |
|
|
|
|
|
|
|
|
|
#include "opencv2/highgui/highgui.hpp" |
|
|
|
|
#include "opencv2/imgproc/imgproc.hpp" |
|
|
|
|
#include <iostream> |
|
|
|
|
#include <stdio.h> |
|
|
|
|
|
|
|
|
|
using namespace std; |
|
|
|
|
using namespace cv; |
|
|
|
|
|
|
|
|
|
/** @function main */ |
|
|
|
|
int main( int argc, char** argv ) |
|
|
|
|
{ |
|
|
|
|
Mat src_base, hsv_base; |
|
|
|
|
Mat src_test1, hsv_test1; |
|
|
|
|
Mat src_test2, hsv_test2; |
|
|
|
|
Mat hsv_half_down; |
|
|
|
|
|
|
|
|
|
/// Load three images with different environment settings |
|
|
|
|
if( argc < 4 ) |
|
|
|
|
{ printf("** Error. Usage: ./compareHist_Demo <image_settings0> <image_setting1> <image_settings2>\n"); |
|
|
|
|
return -1; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
src_base = imread( argv[1], 1 ); |
|
|
|
|
src_test1 = imread( argv[2], 1 ); |
|
|
|
|
src_test2 = imread( argv[3], 1 ); |
|
|
|
|
|
|
|
|
|
/// Convert to HSV |
|
|
|
|
cvtColor( src_base, hsv_base, CV_BGR2HSV ); |
|
|
|
|
cvtColor( src_test1, hsv_test1, CV_BGR2HSV ); |
|
|
|
|
cvtColor( src_test2, hsv_test2, CV_BGR2HSV ); |
|
|
|
|
|
|
|
|
|
hsv_half_down = hsv_base( Range( hsv_base.rows/2, hsv_base.rows - 1 ), Range( 0, hsv_base.cols - 1 ) ); |
|
|
|
|
|
|
|
|
|
/// Using 30 bins for hue and 32 for saturation |
|
|
|
|
int h_bins = 50; int s_bins = 60; |
|
|
|
|
int histSize[] = { h_bins, s_bins }; |
|
|
|
|
|
|
|
|
|
// hue varies from 0 to 256, saturation from 0 to 180 |
|
|
|
|
float h_ranges[] = { 0, 256 }; |
|
|
|
|
float s_ranges[] = { 0, 180 }; |
|
|
|
|
|
|
|
|
|
const float* ranges[] = { h_ranges, s_ranges }; |
|
|
|
|
|
|
|
|
|
// Use the o-th and 1-st channels |
|
|
|
|
int channels[] = { 0, 1 }; |
|
|
|
|
|
|
|
|
|
/// Histograms |
|
|
|
|
MatND hist_base; |
|
|
|
|
MatND hist_half_down; |
|
|
|
|
MatND hist_test1; |
|
|
|
|
MatND hist_test2; |
|
|
|
|
|
|
|
|
|
/// Calculate the histograms for the HSV images |
|
|
|
|
calcHist( &hsv_base, 1, channels, Mat(), hist_base, 2, histSize, ranges, true, false ); |
|
|
|
|
normalize( hist_base, hist_base, 0, 1, NORM_MINMAX, -1, Mat() ); |
|
|
|
|
.. literalinclude:: ../../../../../samples/cpp/tutorial_code/Histograms_Matching/compareHist_Demo.cpp |
|
|
|
|
:language: cpp |
|
|
|
|
:tab-width: 4 |
|
|
|
|
|
|
|
|
|
calcHist( &hsv_half_down, 1, channels, Mat(), hist_half_down, 2, histSize, ranges, true, false ); |
|
|
|
|
normalize( hist_half_down, hist_half_down, 0, 1, NORM_MINMAX, -1, Mat() ); |
|
|
|
|
|
|
|
|
|
calcHist( &hsv_test1, 1, channels, Mat(), hist_test1, 2, histSize, ranges, true, false ); |
|
|
|
|
normalize( hist_test1, hist_test1, 0, 1, NORM_MINMAX, -1, Mat() ); |
|
|
|
|
|
|
|
|
|
calcHist( &hsv_test2, 1, channels, Mat(), hist_test2, 2, histSize, ranges, true, false ); |
|
|
|
|
normalize( hist_test2, hist_test2, 0, 1, NORM_MINMAX, -1, Mat() ); |
|
|
|
|
|
|
|
|
|
/// Apply the histogram comparison methods |
|
|
|
|
for( int i = 0; i < 4; i++ ) |
|
|
|
|
{ int compare_method = i; |
|
|
|
|
double base_base = compareHist( hist_base, hist_base, compare_method ); |
|
|
|
|
double base_half = compareHist( hist_base, hist_half_down, compare_method ); |
|
|
|
|
double base_test1 = compareHist( hist_base, hist_test1, compare_method ); |
|
|
|
|
double base_test2 = compareHist( hist_base, hist_test2, compare_method ); |
|
|
|
|
|
|
|
|
|
printf( " Method [%d] Perfect, Base-Half, Base-Test(1), Base-Test(2) : %f, %f, %f, %f \n", i, base_base, base_half , base_test1, base_test2 ); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
printf( "Done \n" ); |
|
|
|
|
|
|
|
|
|
return 0; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Explanation |
|
|
|
@ -211,11 +133,11 @@ Explanation |
|
|
|
|
|
|
|
|
|
.. code-block:: cpp |
|
|
|
|
|
|
|
|
|
int h_bins = 50; int s_bins = 32; |
|
|
|
|
int h_bins = 50; int s_bins = 60; |
|
|
|
|
int histSize[] = { h_bins, s_bins }; |
|
|
|
|
|
|
|
|
|
float h_ranges[] = { 0, 256 }; |
|
|
|
|
float s_ranges[] = { 0, 180 }; |
|
|
|
|
float h_ranges[] = { 0, 180 }; |
|
|
|
|
float s_ranges[] = { 0, 256 }; |
|
|
|
|
|
|
|
|
|
const float* ranges[] = { h_ranges, s_ranges }; |
|
|
|
|
|
|
|
|
|