Why do we set offset (0.5) in single shot detector? In the paper SSD: Single Shot MultiBox Detector, under section 2.2 - (4), why do we add an offset of 0.5 to x, y in generating the anchor boxes across feature maps?
The integer coordinates refer to the top-left corner of a pixel. Adding 0.5 to both x and y gives you the center location of a pixel instead.