cv::Mat FastKDEBackground::operator()(const cv::Mat& img){
if(!isInit) init(img);
cv::Mat probimg;
cv::Mat mask;
imagebuffer.push_back(img);
probimg=get_probabilities(img);
cv::imshow("Probabilities",probimg*100);
cv::threshold(probimg,mask, threshold, 255, CV_THRESH_BINARY_INV);
mask.convertTo(mask,CV_8UC1);
if(count<=twin){count++;}
else{imagebuffer.pop_front();}
return mask;
}
int encode(FILE *input_file, unsigned long file_size, FILE *output_file, unsigned int length)
{
unsigned long i, j, n_symbols, current_symbol, tmp;
unsigned long *probs;
unsigned char *buffer;
code *codefinal;
n_symbols = pow_int(2, 8 * length);
buffer = malloc(length * READ_SIZE);
probs = malloc(pow_int(2, 8 * length) * sizeof(unsigned long));
get_probabilities(input_file, n_symbols, probs);
unsigned long tree[(n_symbols - 1) * 2];
create_tree(probs, n_symbols, tree);
// Show packed tree
for (i = 0; i < (n_symbols - 1); i++)
printf("(%lu, %lu) ", tree[i * 2], tree[i * 2 + 1]);
printf("\n");
codefinal = malloc(n_symbols * 2 * sizeof(code));
create_huff_code(tree, n_symbols, codefinal);
fseek(input_file, 0L, SEEK_SET);
unsigned char binarybuffer[n_symbols];
unsigned long binarybuffersize = 0;
unsigned char *outbuffer;
outbuffer = malloc(length);
//Headers of file
//X will be the number of bits added to create the last byte
char filetype[] = ".huf1.0X";
for (i = 0; i < 8; i++)
fwrite(&filetype[i], 1, 1, output_file);
fwrite(&length, 1, 1, output_file);
for (i = 0; i < (n_symbols - 1) * 2; i++)
fwrite(&tree[i], sizeof(unsigned long), 1, output_file);
for (i = 0; i < file_size/length; i++) {
fread(buffer, length, 1, input_file);
current_symbol = 0;
for (j = 0; j < length; j++)
current_symbol += buffer[j]*pow_int(2,8*(length - 1 - j));
for (j = 0; j < codefinal[current_symbol].length; j++)
binarybuffer[binarybuffersize+j] = codefinal[current_symbol].value[j];
binarybuffersize += codefinal[current_symbol].length;
while (binarybuffersize >= length*8){
*outbuffer = 0;
for (j = 0; j < length*8; j++)
*outbuffer += binarybuffer[length*8 - 1 - j] * pow_int(2,j);
fwrite(outbuffer ,length ,1 ,output_file);
for (j = 0; j < binarybuffersize - length*8; j++)
binarybuffer[j] = binarybuffer[j+length*8];
binarybuffersize -= length*8;
}
}
unsigned char filled = length*8 - binarybuffersize;
*outbuffer = 0;
for (j = 0; j < length*8; j++)
*outbuffer += binarybuffer[length*8 - 1 - j] * pow_int(2,j);
fwrite(outbuffer ,length ,1 ,output_file);
fseek(output_file, 7 * length, SEEK_SET);
fwrite(&filled, 1, 1, output_file);
free(probs);
free(outbuffer);
return 0;
}
