Exemplo n.º 1
0
///////////////////////////////////////////////////////////////////////////////
// load a BMP as texture
///////////////////////////////////////////////////////////////////////////////
unsigned int ModelGL::loadTextureBmp(const char* fileName)
{
    int chans, x, y;
    void* buf;
    Image::Bmp bmp;

    bmp.read(fileName);
    x = bmp.getWidth();
    y = bmp.getHeight();
    chans = bmp.getBitCount() / 8;
    buf = (void*)bmp.getDataRGB();

    // gen texture ID
    GLuint texture;
    glGenTextures(1, &texture);

    // set active texture and configure it
    glBindTexture(GL_TEXTURE_2D, texture);

    // select modulate to mix texture with color for shading
    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);

    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    // if wrap is true, the texture wraps over at the edges (repeat)
    //       ... false, the texture ends at the edges (clamp)
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    //glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    //glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    // build our texture mipmaps
    switch(chans)
    {
    case 1:
        gluBuild2DMipmaps(GL_TEXTURE_2D, chans, x, y, GL_LUMINANCE, GL_UNSIGNED_BYTE, buf);
        break;
    case 3:
        gluBuild2DMipmaps(GL_TEXTURE_2D, chans, x, y, GL_RGB, GL_UNSIGNED_BYTE, buf);
        break;
    case 4:
        gluBuild2DMipmaps(GL_TEXTURE_2D, chans, x, y, GL_RGBA, GL_UNSIGNED_BYTE, buf);
        break;
    }

    return texture;
}
int main(int argc, char **argv){
	mode = 1;
	cout << "Enter image name : "; cin >> fileName;
	cout << "===================MODE==================\n";
	cout << "(0)shows histogram \n(1)global histogram equalization \n(2)local histogram equalization (window size 3)\n";
	cout << "Please enter mode : "; cin >> mode;
	if (bmp.read(fileName)){
		inBuf = bmp.getData();
		imageX = bmp.getWidth();
		imageY = bmp.getHeight();
	}else{
		cout << "==============================\n";
		cout << "|- Please check image name -|\n";
		cout << "==============================\n";
		exit(0);
	}

	histogram = calculate_histogram(inBuf, imageX, imageY); // hitung histogram 
	if (mode != 0){
		if (mode == 1){
			strcpy_s(newFileName, "global_equalization_");
			strcat_s(newFileName, fileName);
			perform_histogram_equalization(histogram, imageX, imageY); // histrogram equalization
		}
		else{
			strcpy_s(newFileName, "local_equalization_");
			strcat_s(newFileName, fileName);
			local_histogram_equalization(histogram, imageX, imageY, WINDOW_SIZE);
		}
		bmp.save(newFileName, imageX, imageY, 1, outBuf); // save new image 
		equalHistogram = calculate_histogram(outBuf, imageX, imageY); // new histogram
	}

	histoScale = (float)(imageY - 1) / getMaxHistogram(histogram, HISTOGRAM_SIZE);

	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
	glutInitWindowSize(imageX, imageY);
	glutInitWindowPosition(10, 10);
	glutCreateWindow("Histogram");
	Initialize();
	glutDisplayFunc(Draw);
	glutMainLoop();

	
	return 0;
}