logo
down
shadow

valgrind: errors with cvCvtColor in opencv


valgrind: errors with cvCvtColor in opencv

By : user2948060
Date : November 14 2020, 04:48 PM
this will help please, avoid all deprecated IplImages, and use cv::Mat, and the c++ api instead.
code :
#include <opencv2/opencv.hpp> // c++ headers
#include <iostream>
using namespace std;
using namespace cv;
int main(int argc, char** argv)
{
    for(int i=0;i<2;i++){
        ostringstream tmp;
        tmp << "/vol/test1/" << i << ".jpg";

        Mat img = imread(tmp.str().c_str());              
        Mat imgc; // no pre-allocation nessecary
        cvtColor(img, imgc, CV_BGR2Lab);                  
        // no manual release nessecary        
    }
    return 0;
}


Share : facebook icon twitter icon
opencv - Assertion failed (dst.data == dst0.data) in cvCvtColor

opencv - Assertion failed (dst.data == dst0.data) in cvCvtColor


By : Ariel Koren
Date : March 29 2020, 07:55 AM
around this issue The following code will post the error message:
code :
IplImage* temp_object = &(IplImage)object;
IplImage* temp_object = static_cast<IplImage *>(&object);
IplImage temp_object(object);
Eclipse shows error for OpenCV cvCvtColor while using javacv

Eclipse shows error for OpenCV cvCvtColor while using javacv


By : Alexandre Carvalho
Date : March 29 2020, 07:55 AM
With these it helps I am using OpenCV in C/C++ version, but the concepts I'm pointing are still valid.
OpenCV constant CV_BGR2GRAY belongs to an enumerative type defined in the source file types_c.h:
code :
CV_BGR2BGRA    =0,
CV_RGB2RGBA    =CV_BGR2BGRA,

CV_BGRA2BGR    =1,
CV_RGBA2RGB    =CV_BGRA2BGR,

CV_BGR2RGBA    =2,
CV_RGB2BGRA    =CV_BGR2RGBA,

CV_RGBA2BGR    =3,
CV_BGRA2RGB    =CV_RGBA2BGR,

CV_BGR2RGB     =4,
CV_RGB2BGR     =CV_BGR2RGB,

CV_BGRA2RGBA   =5,
CV_RGBA2BGRA   =CV_BGRA2RGBA,

CV_BGR2GRAY    =6,
CV_RGB2GRAY    =7,
CV_GRAY2BGR    =8,
CV_GRAY2RGB    =CV_GRAY2BGR,
CV_GRAY2BGRA   =9,
CV_GRAY2RGBA   =CV_GRAY2BGRA,
CV_BGRA2GRAY   =10,
CV_RGBA2GRAY   =11,

CV_BGR2BGR565  =12,
CV_RGB2BGR565  =13,
CV_BGR5652BGR  =14,
CV_BGR5652RGB  =15,
CV_BGRA2BGR565 =16,
CV_RGBA2BGR565 =17,
CV_BGR5652BGRA =18,
CV_BGR5652RGBA =19,

CV_GRAY2BGR565 =20,
CV_BGR5652GRAY =21,

CV_BGR2BGR555  =22,
CV_RGB2BGR555  =23,
CV_BGR5552BGR  =24,
CV_BGR5552RGB  =25,
CV_BGRA2BGR555 =26,
CV_RGBA2BGR555 =27,
CV_BGR5552BGRA =28,
CV_BGR5552RGBA =29,

CV_GRAY2BGR555 =30,
CV_BGR5552GRAY =31,

CV_BGR2XYZ     =32,
CV_RGB2XYZ     =33,
CV_XYZ2BGR     =34,
CV_XYZ2RGB     =35,

CV_BGR2YCrCb   =36,
CV_RGB2YCrCb   =37,
CV_YCrCb2BGR   =38,
CV_YCrCb2RGB   =39,

CV_BGR2HSV     =40,
CV_RGB2HSV     =41,

CV_BGR2Lab     =44,
CV_RGB2Lab     =45,

CV_BayerBG2BGR =46,
CV_BayerGB2BGR =47,
CV_BayerRG2BGR =48,
CV_BayerGR2BGR =49,

CV_BayerBG2RGB =CV_BayerRG2BGR,
CV_BayerGB2RGB =CV_BayerGR2BGR,
CV_BayerRG2RGB =CV_BayerBG2BGR,
CV_BayerGR2RGB =CV_BayerGB2BGR,

CV_BGR2Luv     =50,
CV_RGB2Luv     =51,
CV_BGR2HLS     =52,
CV_RGB2HLS     =53,

CV_HSV2BGR     =54,
CV_HSV2RGB     =55,

CV_Lab2BGR     =56,
CV_Lab2RGB     =57,
CV_Luv2BGR     =58,
CV_Luv2RGB     =59,
CV_HLS2BGR     =60,
CV_HLS2RGB     =61,

CV_BayerBG2BGR_VNG =62,
CV_BayerGB2BGR_VNG =63,
CV_BayerRG2BGR_VNG =64,
CV_BayerGR2BGR_VNG =65,

CV_BayerBG2RGB_VNG =CV_BayerRG2BGR_VNG,
CV_BayerGB2RGB_VNG =CV_BayerGR2BGR_VNG,
CV_BayerRG2RGB_VNG =CV_BayerBG2BGR_VNG,
CV_BayerGR2RGB_VNG =CV_BayerGB2BGR_VNG,

CV_BGR2HSV_FULL = 66,
CV_RGB2HSV_FULL = 67,
CV_BGR2HLS_FULL = 68,
CV_RGB2HLS_FULL = 69,

CV_HSV2BGR_FULL = 70,
CV_HSV2RGB_FULL = 71,
CV_HLS2BGR_FULL = 72,
CV_HLS2RGB_FULL = 73,

CV_LBGR2Lab     = 74,
CV_LRGB2Lab     = 75,
CV_LBGR2Luv     = 76,
CV_LRGB2Luv     = 77,

CV_Lab2LBGR     = 78,
CV_Lab2LRGB     = 79,
CV_Luv2LBGR     = 80,
CV_Luv2LRGB     = 81,

CV_BGR2YUV      = 82,
CV_RGB2YUV      = 83,
CV_YUV2BGR      = 84,
CV_YUV2RGB      = 85,

CV_BayerBG2GRAY = 86,
CV_BayerGB2GRAY = 87,
CV_BayerRG2GRAY = 88,
CV_BayerGR2GRAY = 89,

CV_YUV420i2RGB  = 90,
CV_YUV420i2BGR  = 91,
CV_YUV420sp2RGB = 92,
CV_YUV420sp2BGR = 93,

CV_COLORCVT_MAX  =100 };
cvCvtColor(originalImage,grayImage, 6 );
OpenCV cvCvtColor not linked?

OpenCV cvCvtColor not linked?


By : user7100161
Date : March 29 2020, 07:55 AM
help you fix your problem you're using the headers for the c++ api, but code from the deprecated c-api ( please don't !! ).
code :
 cv::VideoCapture cap(0);
 while(cap.IsOpened()) {
     cv::Mat f,g;
     if ( ! cap.read(f) ) break;
     cv::cvtColor(f, g, CV_RGB2GRAY);
     cv::imshow("lalala",g);
     if ( waitKey(10) == 27 ) break;
 }
 return 0;
How to convert a cvCvtColor to cvtColor call in opencv (BGR to HSV)?

How to convert a cvCvtColor to cvtColor call in opencv (BGR to HSV)?


By : David N. Thomas
Date : March 29 2020, 07:55 AM
wish helps you use cv::Mat instead of IplImage here, in general, prefer the c++ api to the deprecated c-api:
What is the difference between opencv function cvcvtcolor and cvtcolor

What is the difference between opencv function cvcvtcolor and cvtcolor


By : Tumbapo Hang Lookche
Date : March 29 2020, 07:55 AM
Any of those help There is no difference except that cvCvtColor is a simple wrapper for cvtColor.
cvCvtColor is C API - deprecated. cvtColor is C++ API - recommended.
Related Posts Related Posts :
  • Vector of pointers: some clarification needed
  • scaling a bitmap without losing quality
  • How to evaluate a function directly?
  • QNetworkAccessManager: How to change post data at createRequest function
  • Returning std::move of a local variable
  • Is there a fast linear SVM library with a good C++ interface?
  • What is the purpose of name mangling in C++?
  • C++ Why the void function is not working eventhough I called it?
  • How the pointer and the pointer's adress can share the same memory adress?
  • error C2220: warning treated as error - no 'object' file generated
  • exception of strcpy function in c++ console program
  • How to access USB barcode scanner data directly from USB port using C/C++ without driver
  • Under which circumstances will std::vector.clear() call a destructor?
  • Template partial specialisation and dependent names
  • best way to share data between c codes
  • C++ ignores if statement conditions
  • How to set the argv[ ] to be case-insensitive in a Win32 Console Application?
  • How to fix error "clang: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)"?
  • C++ How do I print a .txt file verbatim?
  • Creating two dimensional array of class
  • How do I correctly use COMMTIMEOUTS with OVERLAPPED IO mode reading from a Serial port
  • An assert macro which expands to static_assert when possible?
  • How to write a copyconstructor for a class which has HANDLE as a member in win32 c++ application?
  • C++ saving info such as tree in a file
  • Transforming an expression template tree
  • How to overload an operator with multiple parameters like a + b + c?
  • C++ 11 with Raspberry Pi performances
  • Make a C++ class look like a numpy array using swig
  • Postfix incrementer overloading for nested enumerated types
  • Is there a tidy way of associating metadata with functions in C++
  • QObject::installEventFilter(): Cannot filter events for objects in a different thread
  • LNK2005 error with Zxing C++
  • C++ Doubly Linked List with Pointers: Object of class isn't constructed properly
  • Using a random string generator in c++ constructor
  • What should I use instead of void as one of the alternative types in an variant?
  • C++ return value from multithreads using reference
  • How to connect multiple TCP IP clients to same server port using c++
  • Defaul compiler generates the reference operator (In C++)?
  • Unable to change directory time stamp after using FILE_FLAG_BACKUP_SEMANTICS
  • vector handling displaying output
  • WSAGetLastError returns WSAENOTSOCK - Cause?
  • C++: How to overload pow for user type?
  • C++ using arrays as multidimensional despite initalising it as 1D with pointer
  • How negate std::is_integral for use in tag dispatch?
  • Retrieve serial number from USB memory (Windows environment c++)
  • g++ error: invalid preprocessing directive #INCLUDE
  • C++ What is the std::for_each() function parameter type?
  • C++: Read individual lines from text file, sort words alphabetically
  • Saving 'this' address into a variable
  • c++ command line arguments in ubuntu terminal
  • Convert "Cartesian coordinates" to "polar coordinates with respect to user specified origin"
  • In what order are local scoped objects destructed?
  • How to use SDL_MapRGB with SDL 2.0
  • how compiler and interpreter work in case of array declaration
  • GSL integration behaves strange
  • Cropping an image with OpenCV and C
  • Find the last line in text file and select the first 10 char and print to a new file?
  • Created many CCSprits but when triggering ccTouchBegan gives the last one allways
  • seekp and seekg don't work with fstream
  • Taking input in Sublime Text 3
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org