#include "StdAfx.h"
#include "ImageBWBinaray.h"


CImageBWBinaray::CImageBWBinaray(bool needtoBW):needToBW(needtoBW)
{
}


CImageBWBinaray::~CImageBWBinaray(void)
{
}

void CImageBWBinaray::apply(cv::Mat& dib,int side)
{
    if (needToBW)
    {
	    if (dib.channels()!=1)
	    {
		 return;
	    }
		threshold(dib,dib,128.0,255.0,CV_THRESH_BINARY);
    }
}

void CImageBWBinaray::gray2binary(cv::Mat gray, unsigned char* binary){
	if(gray.channels() != 1)
		return;
	int width = gray.cols;
	int height = gray.rows;
	int n_lineByte = (width  + 7)/8;
	int lineByte =  (n_lineByte * 8 + 31)/32*4;
	unsigned char * imageData = gray.data;
	unsigned char temp;
	for(int row = height -1 ; row >= 0 ; row--){
		for(int col =0; col < width; col++ ){
			int pos = col % 8;
			int pix = *(imageData+ row * width + col);
			temp = 1 << (7 - pos );
			if( pix == 255 ){
				*(binary + col /8) |= temp;
				}else{
					*(binary + col / 8 ) &= (~temp);
				}
			}
		binary = binary + lineByte;
		}
	}