Augmented Reality

General Discussion Other

Ja_Ha

in General Discussion • Other • 8 months ago

Hi...

I want to do like this link.

Here is code for facedetection

import hypermedia.video.*;
import java.awt.Rectangle;
OpenCV opencv;
void setup() {
size( 640, 480 );
opencv = new OpenCV(this);
opencv.capture( width, height );
opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); // load the FRONTALFACE description file
}
void draw() {
opencv.read();
image( opencv.image(), 0, 0 );
// detect anything ressembling a FRONTALFACE
Rectangle[] faces = opencv.detect();
// draw detected face area(s)
noFill();
stroke(255,0,0);
for( int i=0; i<faces.length; i++ ) {
rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height );
}
}

and the code for strings with mouse position

// simulate loadStrings
String[] TestCSV = {
"Hello,you,!,Funny",
"11,18,9,2,12",
"36,28,90,5,24",
"What,good,,,"
};
// your target
String[][]myStringArray;
int faceNumber = 0;
boolean mouseHold=false;
void setup() {
size(1000, 1000);
// String[][] TestCSV = loadStrings ( ..................
myStringArray = new String[0][0];
String[] a1;
for (int i=0;i<TestCSV.length;i++) {
a1 = split(TestCSV [i], ",");
myStringArray = (String[][]) append (myStringArray, a1);
}
faceNumber=0;
println(myStringArray.length);
println(myStringArray[0].length);
println("-------------------");
for (int i=0;i<myStringArray.length;i++) {
for (int j=0;j<myStringArray[i].length;j++) {
print (myStringArray[i][j] + " " );
}
println();
}
} // func
void draw() {
background(0);
fill(255);
text ("Drag the mouse, please", 111, 100);
if (mouseHold) {
switch (faceNumber) {
case 0:
fill ( faceNumber * 20+140, faceNumber*1, 110);
break;
case 1:
fill(255, 1, 2);
break;
default:
fill(0, 0, 255);
break;
} // switch
for (int i=0;i<myStringArray.length;i++) {
text ( myStringArray [ faceNumber ] [ i ], mouseX-9, mouseY-i*22-9) ;
}
} // if
} // func
void mousePressed() {
//
mouseHold=true;
}
void mouseReleased() {
mouseHold=false;
faceNumber++;
if (faceNumber>=myStringArray.length)
faceNumber=0;
}

I tried hard to mix them but didn't get success.

thanking you in anticipation

Replies(2)

tfguy44

In line 28 of the first sketch, you draw a rectangle around any detected faces.
To do this you need to know where each detected face is and how big it is.
This information is accessible via the faces[] array.
The i'th face in the array is at (faces[i].x, faces[i].y), and has a width of faces[i].width and a height of (you guessed it) faces[i].height.

Instead of drawing a rectangle around the detected face, you can use those values to do other things - like put text above each detected face.

The most useful line from the second sketch is line 50 - this is the line that actually draws some text on the screen.
We can see that it draws some text at a given X and Y position, based on where the mouse is.

But we do not want to put text where the mouse is - we want to put text near where the face is.

So we copy this line back to the first sketch, remove the access to the myStringsArray[] that the first sketch doesn't have, and replace it with something simple: A single bit of text where each face is.

import hypermedia.video.*;
import java.awt.Rectangle;
OpenCV opencv;
void setup() {
size( 640, 480 );
opencv = new OpenCV(this);
opencv.capture( width, height );
opencv.cascade( OpenCV.CASCADE_FRONTALFACE_ALT ); // load the FRONTALFACE description file
}
void draw() {
opencv.read();
image( opencv.image(), 0, 0 );
// detect anything ressembling a FRONTALFACE
Rectangle[] faces = opencv.detect();
// draw detected face area(s)
noFill();
stroke(255,0,0);
for( int i=0; i<faces.length; i++ ) {
// rect( faces[i].x, faces[i].y, faces[i].width, faces[i].height ); // Don't draw rectangle.
fill(255); // draw the text in white.
text( "HELLO!", faces[i].x, faces[i].y );
}
}

Wow! Next what you need to do is make it so that each detected face gets a different line of text.
You can do this by having an array of strings - like myStringArray[] - and accessing a different string from that array for each of the different faces. Hint: Your call to text() will be "text( myStringArray[i], faces[i].x, faces[i].y );"

Once you have gotten that working - or put some effort into writing it yourself - we can help you further.

Ja_Ha

Re: Augmented Reality

8 months ago

Hi..

Thank you for your reply.

This is very helpful.

I will follow your suggestions to make it perfect.

Thank you once again.

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