# OPENCV

Name | ROI()
Examples |
    import hypermedia.video.*;

    OpenCV opencv;

    size( 240, 180 );

    opencv = new OpenCV( this );     // create a new OpenCV Object
    opencv.loadImage( "des.jpg" );   // load image from file

    // set the region of interest
    opencv.ROI( 25, 30, 70, 90 );

    opencv.threshold(80);            // do something inside
    image( opencv.image(), 0, 0 );   // show in sketch
Description | Set image region of interest to the given rectangle. This methods isolates a sub-section of the current image for all subsequent activity. To clear the Region of Interest back to the entire image, call `ROI(null);`
Syntax | `ROI(rect); ROI(x, y, width, height);`
Parameters |
rect | Rectangle : the new region of interest or `null` to reset
x | int : the region x-coordinate
y | int : the region y-coordinate
width | int : the region width
height | int : the region height
Return | None
Usage | Application
Related |