Hi All,
I am using OpenCV 2.4.6.1 on OSX 10.8.4 using the Java API with IntelliJ. I am developing a very simple application that works on a 640x480 24bpp Mat object which is an image read in from disk.
I have code to draw rectangles and lines, but despite changing the point coordinates for start and end only a single pixel is drawn at 0,0 of the Mat. The lines and rectangles seem to ignore any combination of coordinates I give and always result in this strange result. Here is some code:
Mat color_origImg = Highgui.imread("/Users/jamescharters/Downloads/sample_0_bw_hog-rect.jpg");
Core.line(color_origImg, new Point(50,50), new Point(10, 100), new Scalar(255,0,0), 1);
Highgui.imwrite("/Users/jamescharters/Downloads/sample_0_bw_hog-rect.jpg", color_origImg);
The image is definitely being read in correctly but I can't for the life of me figure out why plotting lines, rectangles or other sorts of shapes on a Mat object doesn't work as expected. I've tried black and white images, using CvtColor too ... all to no avail.
Can anyone offer some advice?
