week07

利用 openCV 在 co

先下載

https://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.1/

執行完後開啟 codeblocks

進入 settings ⇀ complier 調整設定

把檔名存成.cpp檔

記得另存 a.png 到桌面

#include <opencv/highgui.h>

int main(){

    IplImage * img = cvLoadImage("a.png");

    cvShowImage("week07", img);

    cvWaitKey(0);

}

旋轉的球

記得另存 a.png 到 freeglut 的 bin 資料夾裡

#include <opencv/highgui.h>
#include <opencv/cv.h>
#include <GL/glut.h>
#include <stdio.h>



GLUquadric * quad;
GLuint id;
float angle=0;
void display()
{   glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT  | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();///自轉
        glRotatef(90, 1,0,0);
        glRotatef(angle, 0,0,1);
        gluQuadricTexture(quad, 1);
        gluSphere(quad, 1, 30, 30);///glutSolidTeapot(0.3);
    glPopMatrix();///自轉
    glutSwapBuffers();
}
void timer(int t)
{   glutTimerFunc(20, timer, 0);/// 1000 msec   50fps:20msec
    angle+=1;
}
int myTexture(char *filename)
{
    IplImage * img = cvLoadImage(filename); ///讀圖
    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩
    glEnable(GL_TEXTURE_2D);
    GLuint id;
    glGenTextures(1, &id);
    glBindTexture(GL_TEXTURE_2D, id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
    return id;
}

void myInit()
{   quad = gluNewQuadric();
    id = myTexture("a.jpg");
}
int main(int argc, char**argv)
{   glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("3D");
    glutDisplayFunc(display);
    glutTimerFunc(0, timer, 0);
    myInit();
    glutMainLoop();
}