"Learn OpenCV" considerations--matrix and image processing--cvor,cvors,cvrreduce,cvrepeat,cvscale,cvset and Cvsetzero

Operation of matrices and images

(1) cvor function

Its structure

void Cvor (//two matrix corresponding element do or perform const cvarr* src1,//matrix 1const cvarr* src2,//matrix 2cvarr* dst,//result Matrix Const cvarr* mask = null//Matrix "switch") ;

Instance Code

#include <cv.h> #include 

Output results



(2) Cvors function
Its structure

void Cvor (//matrix with given scalar do or op const cvarr* src1,//matrix 1CvScalar value,//given variable cvarr* dst,//result Matrix Const cvarr* mask = null//Matrix "switch");

Instance Code

#include <cv.h> #include 

Output results



(3) Cvreduce function
Its structure

Cvsize cvreduce (//Finished by op specified reduction const cvarr* src,//target matrix cvarr* dst,//result Matrix int Dim = -1,//Factor Factor,//1 merge rows, 0 merged into columns. -1 into the corresponding disint op = cv_reduce_sum//Specify the law of reduction);

PS: The conversion operation in which the OP represents


 
  
 
  
   
 
    
 
     
The value of OP
 
     
Results
 
    
 
    
 
     
Cv_reduce_sum
 
     
Calculates the sum of all vectors
 
    
 
    
 
     
Cv_reduce_avg
 
     
Calculates the average of all vectors
 
    
 
    
 
     
Cv_reduce_max
 
     
Calculates the maximum value in all vectors
 
    
 
    
 
     
Cv_reduce_min
 
     
Calculates the minimum value in all vectors
 
    
 
   
 
 
  

Instance Code

#include <cv.h> #include 

Output results



(4) Cvrepeat function
Its structure

void Cvrepeat (//Copy Image const cvarr* src,//target matrix cvarr* dst//result matrix);

Instance Code

#include <cv.h> #include 

Output Results



(5) Cvscale function
Its structure

void Cvscale (//Linear transform Conversion const cvarr* src,//input matrix cvarr* dst,//output matrix Double scale,//scale factor double shift = 0.0//scaling);

Instance Code

#include <cv.h> #include 

Output results



(6) Cvset function
Its structure

void Cvset (//for pixels in an image set valuecvarr* arr,//target matrix cvscalar value,//Setting value const,cvarr* mask = null//image switch);

Instance Code

#include <cv.h> #include 

Output results



(7) Cvsetzero function
Its structure

void Cvsetzero (//On the image itself is set to zero, equivalent to Cvset (0.0) cvarr* arr,//target matrix);

Instance Code

#include <cv.h> #include 

Output results



To be Continued
 
Copyright notice: This article Bo Master original articles, blogs, without consent may not be reproduced.
 
"Learn OpenCV" considerations--matrix and image processing--cvor,cvors,cvrreduce,cvrepeat,cvscale,cvset and Cvsetzero