utils.py 文件源码

def multi_box_intersection(a, b):
    w = multi_overlap(a.x, a.w, b.x, b.w)
    h = multi_overlap(a.y, a.h, b.y, b.h)

    xp = cuda.get_array_module(w)
    zeros = xp.zeros_like(w)

    w = xp.maximum(w, zeros)
    h = xp.maximum(h, zeros)

    area = w * h
    return area