| 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 | 
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