int main(int argc, char* argv[]) {
//Declare Images buffer
Image input1, input2;
Image output;
//Reading a greyscale image
input2.Load("./img/background_image.pgm");
input1.Load("./img/input_image.pgm");
// allocate the output_image
output.Build(input1.width, input1.height, input1.bpp);
//copia dell'immagine, copiando i buffer
for (int j=1; j<input1.height; ++j){
for (int i=1; i<input1.width; ++i){
int index = i + j * input1.width;
if(input1.buffer[index] > input2.buffer[index])
output.buffer[index] = 0;
else
output.buffer[index] = input2.buffer[index] - input1.buffer[index];
// abs(input1.buffer[i] - input2.buffer[i]) > 30 ? output.buffer[i] = input1.buffer[i] : output.buffer[i] = 0;
#ifdef BINARIZATION
if(output.buffer[index] > SOGLIA)
output.buffer[index] = 255;
else
output.buffer[index] = 0;
#endif
}
}
//Writing an image
output.Save("./img/07_differenza_immagini.pgm");
return 0;
}
int main(int argc, char** argv){
if(argc < 2){
std::cout << "Usage: " << argv[0] << " [pgm_image]\n";
return -1;
}
Image input;
Image output;
input.Load(argv[1]);
if(input.bpp != 8){
std::cout << "The algorithm require a ppm image\n";
return -1;
}
int th = 100;
std::vector<CBlob*> blobs;
// Initializing the array for check if a pixel was already evaluated
bool *is_eval = new bool[input.width*input.height];
for(int k = 0; k < input.width*input.height; ++k)
is_eval[k] = false;
// Looping for all the pixels
for(int i = 0; i < input.height; ++i){
for(int j = 0; j < input.width; ++j){
if(input.buffer[j + i*input.width] > gc_th && is_eval[j + i*input.width] == false ){
CBlob *blob = generate_blob(input,j, i, is_eval) ;
blobs.push_back( blob );
}
}
}
std::cout << "Generated " << blobs.size() << " blobs\n";
// Saving the output to image
output.Build(input.width, input.height, 24);
srand(time(NULL));
int r, g, b;
for(int k = 0; k < output.width*output.height*3; ++k)
output.buffer[k] = 0;
for(int i = 0; i < blobs.size(); ++i){
r = rand() % 256;
g = rand() % 256;
b = rand() % 256;
std::vector<Vector2i> tmp = blobs[i]->get_points();
for(int j = 0; j < tmp.size(); ++j){
output.buffer[tmp[j].x*3 + tmp[j].y*input.width*3] = r;
output.buffer[tmp[j].x*3 + 1 + tmp[j].y*input.width*3] = g;
output.buffer[tmp[j].x*3 + 2 + tmp[j].y*input.width*3] = b;
}
}
output.Save("labelling.pgm");
// Freeing the memory
delete is_eval;
while(!blobs.empty()){
delete blobs.back();
blobs.pop_back();
}
return 0;
}