Capture and store camera images using JAVACV/OPENCV

http://blog.csdn.net/ljsspace/article/details/6702178

Classification:graphic Images (3)

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

This program through JFrame real-time display of the camera image, and the image stored in a buffer, when the user click on any area of jframe with the mouse, display the simple animation of the captured image, while saving the buffer image to the disk file. Click the JFrame Close button to exit the program.

Realize:

[Java]View PlainCopy

2. Import Java.awt.Graphics2D;
4. Import java.awt.event.ActionEvent;
6. Import Java.awt.event.ActionListener;
8. Import Java.awt.event.MouseAdapter;
10. Import java.awt.event.MouseEvent;
12. Import Java.awt.image.BufferedImage;
14. Import Java.io.File;
16. Import java.io.IOException;
20. Import Javax.imageio.ImageIO;
22. Import Javax.swing.Timer;
26. Import Com.googlecode.javacv.CanvasFrame;
28. Import Com.googlecode.javacv.OpenCVFrameGrabber;
30. Import Com.googlecode.javacv.cpp.opencv_core. Iplimage;
32. Import static com.googlecode.javacv.cpp.opencv_core.cvReleaseImage;
36. /**
38. *
40. * Use JAVACV/OPENCV to capture camera images
42. *
44. * There is functions in this demo:
46. * 1) Show real-time camera images
48. * 2) Capture camera images by mouse-clicking anywhere in the JFrame,
50. * The JPG file is saved in a hard-coded path.
52. *
54. * @author Ljs
56. * 2011-08-19
58. *
60. */
62. Public class Cameracapture {
64. public static String savedimagefile = "C:\\tmp\\my.jpg";
68. //timer for image capture animation
70. static class Timeraction implements ActionListener {
72. Private graphics2d G;
74. private Canvasframe Canvasframe;
76. private int width,height;
80. private int delta=10;
82. private int count = 0;
86. Private timer timer;
88. public void SetTimer (Timer timer) {
90. This.timer = timer;
92. }
96. Public timeraction (Canvasframe canvasframe) {
98. THIS.G = (graphics2d) Canvasframe.getcanvas (). Getgraphics ();
100. this.canvasframe = canvasframe;
102. this.width = Canvasframe.getcanvas (). GetWidth ();
104. this.height = Canvasframe.getcanvas (). GetHeight ();
106. }
108. public void actionperformed (ActionEvent e) {
110. int offset = Delta*count;
112. if (width-offset>=offset && height-offset >= offset) {
114. G.drawrect (offset, offset, width-2*offset, height-2*offset);
116. Canvasframe.repaint ();
118. count++;
120. }else{
122. //when animation is done, reset count and stop timer.
124. Timer.stop ();
126. Count = 0;
128. }
130. }
132. }
136. public static void Main (string[] args) throws Exception {
138. //open Camera Source
140. Opencvframegrabber grabber = new Opencvframegrabber (0);
142. Grabber.start ();
146. //create a frame for real-time image display
148. Canvasframe canvasframe = new Canvasframe ("Camera");
150. Iplimage image = Grabber.grab ();
152. int width = image.width ();
154. int height = image.height ();
156. Canvasframe.setcanvassize (width, height);
160. //onscreen buffer for image capture
162. final BufferedImage bimage = new BufferedImage (width, height, bufferedimage.type_int_rgb);
164. Graphics2D bgraphics = Bimage.creategraphics ();
168. //animation Timer
170. Timeraction timeraction = new Timeraction (Canvasframe);
172. Final Timer timer=new timer (ten, timeraction);
174. Timeraction.settimer (timer);
178. //click the frame to capture an image
180. Canvasframe.getcanvas (). Addmouselistener (new Mouseadapter () {
182. public void mouseclicked (MouseEvent e) {
184. Timer.start (); //start Animation
186. try {
188. Imageio.write (bimage, "jpg", new File (Savedimagefile));
190. } catch (IOException E1) {
192. E1.printstacktrace ();
194. }
196. }
198. });
202. //real-time Image Display
204. While (Canvasframe.isvisible () && (Image=grabber.grab ()) = null) {
206. if (!timer.isrunning ()) { //when animation is on, pause real-time display
208. Canvasframe.showimage (image);
210. //draw The onscreen image simutaneously
212. Bgraphics.drawimage (Image.getbufferedimage (),null,0,0);
214. }
216. }
220. //release Resources
222. Cvreleaseimage (image);
224. Grabber.stop ();
226. Canvasframe.dispose ();
228. }
232. }

Capture and store camera images using JAVACV/OPENCV