It cannot be used as a loss function.For bad predictions with no overlap—whether slightly off or not even close—IoU=0. This means IoU is not differentiable, and thus cannot help an algorithm optimize a model.Generalized Intersection over Union(orGIoU)amends IoU to make it differentiable. ...
𝐼𝑜𝑈=𝐴𝑟𝑒𝑎𝑜𝑓𝑂𝑣𝑒𝑟𝑙𝑎𝑝𝐴𝑟𝑒𝑎𝑜𝑓𝑈𝑛𝑖𝑜𝑛IoU=AreaofOverlapAreaofUnion (2) In this study the actual (ground truth) segment was manually drawn by the authors on each reference image. ...
Briefly, 3D- HST14 covers three quarters (625 arcmin2) of the CAN- DELS treasury survey area, and naturally our sample will be drawn from the region where the two data sets overlap. In this paper, we make use of the two orbit depth WFC3/G141 grism exposures, but note that in ...