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A problem rebuild face detect program with new OpenCV library not 2007 faceDetect library.

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- 29-May-2011 12:09 PM
- Forum: Contributed Library Questions
Hi am really stuck rebuilding this program i created at university as I cannot get this library to work, was designed for processing 1.1 so that may be the issue.

http://processing.org/discourse/yabb2/YaBB.pl?num=1190468213

I have been able to get face detection to work using the Open CV Library

http://ubaa.net/shared/processing/opencv/

The code creates a stylized image of the live webcam feed only when faces are detected, otherwise it displays the last image generated with a face.

But am having trouble integrating this into my original code. As the open CV example code does not use capture cam, when I try to put the two codes together I am asking two different libraries to create an image.

Here is my original code if anyone can help me out I would be very grateful its been driving me up the wall.
2. /*
3. title: interactive pop art screen
4. description: veiwer portrait in pop art style, tiled filtered images
5. created: 9th Januarry 2009
6. By: Sean Doyle
7. */
9. //import libraries
11. import fullscreen.*;
12. import processing.video.*;
13. import FaceDetect.*;
15. //call libraries
17. FaceDetect fd;
18. Capture cam;
19. FullScreen fs;
21. //int for face detection
23. int MAX = 10;
24. int[][] Faces = new int[MAX][3];
26. void setup(){
27. size(1280,800,P3D); //set size to screen resolution
28. fs = new FullScreen(this);
29. fs.enter(); //set sketch to full screen mode
30. cam = new Capture(this, 640, 480); //capture camera image
31. fd = new FaceDetect(this);
32. fd.start("haarcascade_frontalface_alt.xml", width,height,30);
33. noFill();
34. }
36. void draw(){ //begin draw loop
37. if (cam.available()) {
38. cam.read();
39. Faces = fd.face(cam);
40. int count = Faces.length; //int stores number of faces detected
41. // println(count);
42. if (count>0){ //if count is greater than zero loop is used
44. /*This section of code copies the image from the camera
45. and tiles it into a variable number of rows and colums
46. these numbers can be changed to create more rows and colums
47. the code will still work. Then adds effects to the image*/
49. int cols = 5; //numbr of colums
50. int rows = 4; //number of rows
51. int w = width/cols; //width of image is the screen widh devided by number of colums
52. int h = height/rows;//hight of image is the screen with devided by the number of rows
53. for (int i =0; i<height; i+=h){
54. for (int j=0; j<width; j+=w){
55. tint(map(i, 0, height, 10, 100), map(j, 0, width, 10, 255), 100); //adds a varying tint to each part of the image
56. image(cam, j, i, w, h);
57. }
58. }
59. filter (POSTERIZE, 4);//add a poster style effect to the image
60. }
61. }
62. }
With the new open cv face detect I have been able to modify the example code to add an effect when faces are detected.
2. import hypermedia.video.*;
3. import java.awt.Rectangle;
4. import processing.video.*;
6. //call libraries
7. OpenCV opencv;
8. Capture myCapture;
11. // contrast/brightness values
13. void setup() {
15. size(1280,800,P3D); //set size to screen resolution
17. opencv = new OpenCV( this );
18. opencv.capture( width, height ); // open video stream
19. opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); // load detection description, here-> front face detection : "haarcascade_frontalface_alt.xml"
22. }
25. public void stop() {
26. opencv.stop();
27. super.stop();
28. }
32. void draw() {
34. opencv.read();
35. // proceed detection
36. Rectangle[] faces = opencv.detect( 1.2, 2, OpenCV.HAAR_DO_CANNY_PRUNING, 40, 40 );
38. // display the image
39. image( opencv.image(), 0, 0 );
48. // draw face area(s)
49. noFill();
50. stroke(255,0,0);
51. for( int i=0; i<faces.length; i++ ) {
53. //my modification
56. if (!faces[i].isEmpty()) //if face is detected do this
57. {
58. println("there is a face");
59. filter (POSTERIZE, 4);//add a poster style effect to the image
60. }
61. }
62. }
66. /**
67. * Changes contrast/brigthness values
68. */

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