目标检测中IOU的计算，python代码

def compute_iou(gt_box,b_box):
    '''
    计算iou
    :param gt_box: ground truth gt_box = [x0,y0,x1,y1]（x0,y0)为左上角的坐标（x1,y1）为右下角的坐标
    :param b_box: bounding box b_box 表示形式同上
    :return: 
    '''
    width0=gt_box[2]-gt_box[0]
    height0 = gt_box[3] - gt_box[1]
    width1 = b_box[2] - b_box[0]
    height1 = b_box[3] - b_box[1]
    max_x =max(gt_box[2],b_box[2])
    min_x = min(gt_box[0],b_box[0])
    width = width0 + width1 -(max_x-min_x)
    max_y = max(gt_box[3],b_box[3])
    min_y = min(gt_box[1],b_box[1])
    height = height0 + height1 - (max_y - min_y)
 
    interArea = width * height
    boxAArea = width0 * height0
    boxBArea = width1 * height1
    iou = interArea / (boxAArea + boxBArea - interArea)
    return iou

来源：CSDN

作者：妞总不泰迪

链接：https://blog.csdn.net/cxn511/article/details/103995334