tfa.losses.giou_loss

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Args:

y_true: true targets tensor. The coordinates of the each bounding
    box in boxes are encoded as [y_min, x_min, y_max, x_max].
y_pred: predictions tensor. The coordinates of the each bounding
    box in boxes are encoded as [y_min, x_min, y_max, x_max].
mode: one of ['giou', 'iou'], decided to calculate GIoU or IoU loss.

GIoU loss float Tensor.