# Pixelate Face Tracking with OpenCV

**URL:** <https://discourse.processing.org/t/pixelate-face-tracking-with-opencv/17780>\
**Category:** Libraries\
**Created:** [February 12, 2020, 10:16pm UTC](https://discourse.processing.org/t/pixelate-face-tracking-with-opencv/17780 "2020-02-12T22:16:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ElwoodBlues](https://avatars.discourse-cdn.com/v4/letter/e/cc9497/32.png) [@ElwoodBlues](https://discourse.processing.org/u/ElwoodBlues)\
**Post date:** [February 12, 2020, 10:16pm UTC](https://discourse.processing.org/t/pixelate-face-tracking-with-opencv/17780/1 "2020-02-12T22:16:32Z")

</div>

Hi, I’m trying to get my code to pixelate faces in live video. I have a face tracking sketch that works, as well as a pixelate sketch that works to pixelate the whole screen, however I am having trouble combining them so it only pixelates a face.

My face tracking code is:

```auto
1. import processing.video.*;
2. import java.awt.Rectangle;
3. import gab.opencv.*;

4. OpenCV opencv;
5. Capture video;
6. Rectangle[] faces;

7. void setup() {

8. size( 640, 480 );

9. String[] cameras = Capture.list();
10. video = new Capture(this, cameras[0]);
11. opencv = new OpenCV(this, width, height);
12. opencv.loadCascade(OpenCV.CASCADE_FRONTALFACE); 
13. faces = opencv.detect();
14. frameRate(24.0);
15. video.start();
16. }

17. void draw() {

18. opencv.loadImage(video);
19. image(video, 0, 0);
20. video.read();

21. faces = opencv.detect(1.2, 3, 0, 40, 400); //adjust last two numbers to give min and max for face size
22. noFill();
23. stroke(255, 20, 255);
24. strokeWeight(2);
25. for (int i = 0; i < faces.length; i++) {
26. rect(faces[i].x, faces[i].y, faces[i].width, faces[i].height);
27. }
28. }

```

And my pixelate code is:

```auto
1. import processing.video.*;

2. int blockSize = 25;
3. int numPixelsWide, numPixelsHigh;

4. Capture video;

5. color movColors[];

6. void setup() {
7. size(640, 480);
8. noStroke();
9.   
10. String[] cameras = Capture.list();
11. video = new Capture(this, cameras[0]);
12. video.start();

13. numPixelsWide = width; 
14. numPixelsHigh = height; 
15. println(numPixelsWide);
16. movColors = new color[numPixelsWide * numPixelsHigh];
17. }

18. void draw() {

19. if (video.available() == true) {
20. video.read();
21. video.loadPixels();
22.     
23. int count = 0;
24. for (int j = 0; j < numPixelsHigh; j++) {
25. for (int i = 0; i < numPixelsWide; i++) {
26. movColors[count] = video.get(i*blockSize, j*blockSize);
27. count++;
28. }
29. }
30. }

31. background(255);
32. for (int j = 0; j < numPixelsHigh; j++) {
33. for (int i = 0; i < numPixelsWide; i++) {
34. fill(movColors[j*numPixelsWide + i]);
35. rect(i*blockSize, j*blockSize, blockSize, blockSize);
36. }
37. }
38. }

```

Any advice on how to combine the two would be greatly appreciated, Thanks