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;
}
///////////////////////////////////////////////////////////////////////////////
// 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(){
ifstream inFile;
re = 0;
cout << "Enter Retain Quantize : "; cin >> re;
char quan = 'y';
cout << "Do you want to quantize ? (y/n) : "; cin >> quan;
if (quan == 'n'){
quantizebool = false;
quality = 1;
}else{
cout << "Enter Step Size : "; cin >> quality;
}
entropylimit = re;
inFile.open("LENA.raw", ios::binary); // binary mode
if (!inFile.good()){
return false;
}
inFile.read((char*)ori, dataSize);
bmp.save("LENA.bmp", 512, 512, 1, ori); // save new image
/*int aMatrix[8][8] = {
{52,55,61,66,70,61,64,73},
{63,59,55,90,109,85,69,72},
{62,59,68,113,144,104,66,73},
{63,58,71,122,154,106,70,69},
{67,61,68,104,126,88,68,70},
{79,65,60,70,77,68,58,75},
{85,71,64,59,55,61,65,83},
{87,79,69,68,65,76,78,94}
};*/
for (int x = 0; x < 512 * 512; x++){
comp[x] = 0;
}
for (int i = 0; i < 512;){
for (int j = 0; j < 512;){
//Build 8x8 block
for (int k = 0; k < 8; k++){
for (int l = 0; l < 8; l++){
//Extract int Value from Image
matInt[l][k] = (int)ori[getValue(l + j, k + i,512)];
//cout << matInt[l][k] << " ";
}
//cout << "\n";
}//end 8x8 block
//return 0;
DCT(matInt);
zigzagOrder(DCTMatrix);
Quantize(zigzag, quality, re);
int localcounter = 0;
for (int k = 0; k < 8; k++){
for (int l = 0; l < 8; l++){
if (localcounter<entropylimit){
probData5[counterData][localcounter] = quantI[k][l];
localcounter++;
}
//cout << matInt[l][k] << " ";
}
//cout << "\n";
}//end 8x8 block
counterData++;
IQuantize(quantI, quality, re);
izigzagOrder(IquantI);
IDCT(izigzag);
for (int k = 0; k < 8; k++){
for (int l = 0; l < 8; l++){
//Extract int Value from Image
comp[getValue(l + j, k + i, 512)] = IDCTMatrix[l][k];
//cout << matInt[l][k] << " ";
}
//cout << "\n";
}//end 8x8 block
j = (j + 8);
}
i = (i + 8);
}
calcEntropy(entropylimit);
/*DCT(aMatrix);
Quantize(DCTMatrix, 16);
zigzagOrder(quantI);
cout << "\n";
izigzagOrder(zigzag);*/
//IQuantize(izigzag, 16);
//IDCT(IquantI);
double m = mse(ori, comp, 512);
cout << "MSE : "<< m<<endl;
bmp.save("LENAcom.bmp", 512, 512, 1, comp); // save new image
return 0;
}
