Image-Processing/crop_final.cpp at master · suyashdamle/Image-Processing · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
#include <iostream>
#include <stdio.h>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include<opencv2/core/core.hpp>
using namespace cv;
using namespace std;
int avgr,avgg,avgb;
int bdry_l,bdry_u,bdry_lft,bdry_r;

int is_page(Mat ip,int i, int j){
  if(ip.at<Vec3b>(i,j)[2] < 0.7*avgr ||ip.at<Vec3b>(i,j)[0] < 0.7*avgb ||ip.at<Vec3b>(i,j)[1] < 0.7*avgg)
    return 0;
  else if(ip.at<Vec3b>(i,j)[2] > 1.4*avgr ||ip.at<Vec3b>(i,j)[0] > 1.4*avgb ||ip.at<Vec3b>(i,j)[1] > 1.4*avgg)
    return 0;
  else return 1;
}

int is_page(Mat ip, int data, char c){
  int sum=0;
  if(c=='R') {
    for (int col=0;col<ip.cols;col++){
      if(is_page(ip,data,col))
	sum++;
    }
    if(sum>0.5*ip.cols)
      return 1;
    return 0;
  }
  else if(c=='C'){
    for(int row=0;row<ip.rows;row++){
      if(is_page(ip,row,data))
	sum++;
    }
    if(sum>0.5*ip.rows)
      return 1;
    return 0;
  }
}


void crop_sides(Mat ip, int k){
  /*LOWER*/
  bdry_l=ip.rows;
  if(!is_page(ip,ip.rows-1,'R')){
    int row=ip.rows-1;
    while(row>0){
      if(is_page(ip,row,'R')){
	bdry_l=row+1;
	break;
      }
      row--;
    }
  }
  /*UPPER*/
  bdry_u=0;
  if(!is_page(ip,0,'R')){
    int row=0;
    while(row<ip.rows){
      if(is_page(ip,row,'R')){
	bdry_u=row;
	break;
      }
      row++;
    }
  }
  /*LEFT*/
  bdry_lft=0;
  if(!is_page(ip,0,'C')){
   int col=0;
    while(col<ip.cols){
      if(is_page(ip,col,'C')){
	bdry_lft=col;
	break;
      }
      col++;
    }
  }
  /*RIGHT*/
  bdry_r=ip.cols-1;
  if(!is_page(ip,ip.cols-1,'C')){
    int col=ip.cols-1;
    while(col>0){
      if(is_page(ip,col,'C')){
	bdry_r=col;
	break;
      }
      col--;
    }
  }


  /*GENERATING OUTPUT IMAGE-----NOT RESIZED*/
  int n_rows=bdry_l-bdry_u;
  int n_cols=bdry_r-bdry_lft;
  Mat op(n_rows,n_cols,CV_8UC3,Scalar(0,0,0));
  for (int i=bdry_u;i<bdry_l;i++){
    for(int j=bdry_lft;j<bdry_r;j++){
      op.at<Vec3b>(i-bdry_u,j-bdry_lft)[0]=ip.at<Vec3b>(i,j)[0];
      op.at<Vec3b>(i-bdry_u,j-bdry_lft)[1]=ip.at<Vec3b>(i,j)[1];
      op.at<Vec3b>(i-bdry_u,j-bdry_lft)[2]=ip.at<Vec3b>(i,j)[2];
    }
  }
  imwrite(format("op%d.jpg",k),op);

}


int main(){
  for(int k=1;k<=1;k++){
    Mat ip=imread(format("test%d.jpg",k),1);
  int sumr,sumg,sumb;
  sumr=sumb=sumg=0;
  for(int i=0.1*ip.rows;i<0.9*ip.rows;i++){
    for(int j=0.1*ip.cols;j<0.9*ip.cols;j++){
      sumr+=ip.at<Vec3b>(i,j)[2];
      sumb+=ip.at<Vec3b>(i,j)[0];
      sumg+=ip.at<Vec3b>(i,j)[1];
    }
  }

  avgr=float(sumr)/(ip.rows*ip.cols*0.64);
  avgg=float(sumg)/(ip.rows*ip.cols*0.64);
  avgb=float(sumb)/(ip.rows*ip.cols*0.64);


  crop_sides(ip,k);

    }

}

/* cv::Mat input_Mat = cv::imread( cv::format( "%s/image%03d.png", file_directory, i ), CV_LOAD_IMAGE_ANYCOLOR );
        cv::namedWindow ("input_image", CV_WINDOW_AUTOSIZE);
        cv::imshow( "input_image", input_Mat);*/