1 // hand gesture sampler.cpp : Defines the entry point for the console application.
2
3 //
4 #include "stdafx.h"
5 #include <string>
6 #include <iostream>
7
8 #include <opencv2\opencv.hpp>
9
10 using namespace cv;
11 using namespace std;
12
13 Mat src, src2Save;
14 char cfileName[1024];
15 string sfileName = "";
16 Size outputSize = Size(320, 240);
17
18 template <typename T> string NumberToString ( T Number );
19 void help();
20
21
22 int main()
23 {
24 help();
25
26 namedWindow("monitor", 1);
27
28 VideoCapture cap(0);
29
30 if(cap.isOpened())
31 {
32 int c = 0;
33 int num = 0;
34 bool sampleState = false;
35
36 //main loop
37 while( c != 27)
38 {
39 if(c == 98) sampleState = true;
40 if(c == 115) sampleState = false;
41
42 //get webcam image
43 cap >> src;
44
45 //resize image to 320*240
46 if(src.cols > 320 || src.rows > 240) resize(src, src2Save, outputSize, 0.5, 0.5, 1);
47
48 //show image
49 imshow("monitor", src2Save);
50
51 //save image
52 sfileName = "f:/documents/Downloads/hand gesture pictures/" + NumberToString(num) + ".png";
53 if(sampleState)
54 {
55 imwrite(sfileName, src2Save);
56 num ++;
57 cout<<"\nCollected Sample Number - " << num << endl;
58 }
59
60 //exit loop
61 c = waitKey(10);
62 }
63 }
64 else
65 //end app
66 return -1;
67
68 return 0;
69 }
70
71 template <typename T>
72 string NumberToString ( T Number )
73 {
74 ostringstream ss;
75 ss << Number;
76 return ss.str();
77 }
78
79 void help()
80 {
81 printf(
82 "========================\n"
83 "========================\n"
84 "Programme to collect a good number of hand gestures from video streams.\n"
85 "Usage:\n"
86 "(s)top - stop sampling\n"
87 "(b)egin - begin sampling\n"
88 "ESC - exit the programme\n"
89 "==========================\n"
90 "==========================\n"
91 );
92 }
