Erro compilando com Qtcreator e gcc

Celestino Lima
(usa Linux Mint)

Enviado em 04/04/2015 - 22:29h

Estou começando a usar o Linux, principalmente para o OpenCV. Escrevi este programa inicial e quando tento compilar recebo este erro. NÃO SEI O QUE FAZER!!
PROGRAMA
#include "opencv/cv.h"
#include "opencv/ml.h"
#include "opencv/cxcore.h"
#include <stdio.h>
char name0[]="h_14.jpg";
int main()
{
IplImage* imagen=NULL; // inicializa a miagem
imagen=cvLoadImage(name0,1); // carrega a imagem "h_14.jpg"
cvNamedWindow("Example1",1); // CV_WINDOW_AUTOSIZE
cvShowImage("Example1",imagen);
cvWaitKey(0);
cvDestroyAllWindow();
cvReleaseImage(&imagen);
cvDestroyWindow("Example1");
return 0;
}
ERRO
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:-1: In function 'int main()':
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:23: error: 'cvLoadImage' was not declared in this scope imagen=cvLoadImage(name0,1);
^
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:25: error: 'cvNamedWindow' was not declared in this scope cvNamedWindow("Example1",1);
^
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:26: error: 'cvShowImage' was not declared in this scope cvShowImage("Example1",imagen);
^
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:28: error: 'cvWaitKey' was not declared in this scope cvWaitKey(0);
^
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:30: error: 'cvDestroyAllWindow' was not declared in this scope cvDestroyAllWindow();
^
/home/celestino/DOCUM/PROJT_CV/Treino/trn001/main.cpp:32: error: 'cvDestroyWindow' was not declared in this scope cvDestroyWindow("Example1");
^