设矩形1大小为100x100，矩形2从左上角顶点重合开始，向右滑动250个单位。
c++源码(基于opencv3.4.0)
float iou(const cv::Rect& r1, const cv::Rect& r2){
return float((r1&r2).area())/float((r1|r2).area());
}
float giou(const cv::Rect& r1, const cv::Rect& r2){
cv::Rect c=r1|r2;
float ca=c.area();
return iou(r1,r2)-(ca-(r1.area()+r2.area()-(r1&r2).area()))/ca;
}
cv::Rect r1(0,0,100,100);
for(int i=0;i<250;++i){
cv::Rect r2(i,0,100,100);
fprintf(stderr," iou = %.4f\t",iou(r1,r2));
fprintf(stderr,"giou = %.4f\n",giou(r1,r2));
}
当矩形2大小为100x100时：
iou = 1.0000 giou = 1.0000
iou = 0.9802 giou = 0.9802
iou = 0.9608 giou = 0.9608
iou = 0.9417 giou = 0.9417
iou = 0.9231 giou = 0.9231
iou = 0.9048 giou = 0.9048
iou = 0.8868 giou = 0.8868
iou = 0.8692 giou = 0.8692
iou = 0.8519 giou = 0.8519
iou = 0.8349 giou = 0.8349
iou = 0.8182 giou = 0.8182
iou = 0.8018 giou = 0.8018
iou = 0.7857 giou = 0.7857
iou = 0.7699 giou = 0.7699
iou = 0.7544 giou = 0.7544
iou = 0.7391 giou = 0.7391
iou = 0.7241 giou = 0.7241
iou = 0.7094 giou = 0.7094
iou = 0.6949 giou = 0.6949
iou = 0.6807 giou = 0.6807
iou = 0.6667 giou = 0.6667
iou = 0.6529 giou = 0.6529
iou = 0.6393 giou = 0.6393
iou = 0.6260 giou = 0.6260
iou = 0.6129 giou = 0.6129
iou = 0.6000 giou = 0.6000
iou = 0.5873 giou = 0.5873
iou = 0.5748 giou = 0.5748
iou = 0.5625 giou = 0.5625
iou = 0.5504 giou = 0.5504
iou = 0.5385 giou = 0.5385
iou = 0.5267 giou = 0.5267
iou = 0.5152 giou = 0.5152
iou = 0.5038 giou = 0.5038
iou = 0.4925 giou = 0.4925
iou = 0.4815 giou = 0.4815
iou = 0.4706 giou = 0.4706
iou = 0.4599 giou = 0.4599
iou = 0.4493 giou = 0.4493
iou = 0.4388 giou = 0.4388
iou = 0.4286 giou = 0.4286
iou = 0.4184 giou = 0.4184
iou = 0.4085 giou = 0.4085
iou = 0.3986 giou = 0.3986
iou = 0.3889 giou = 0.3889
iou = 0.3793 giou = 0.3793
iou = 0.3699 giou = 0.3699
iou = 0.3605 giou = 0.3605
iou = 0.3514 giou = 0.3514
iou = 0.3423 giou = 0.3423
iou = 0.3333 giou = 0.3333
iou = 0.3245 giou = 0.3245
iou = 0.3158 giou = 0.3158
iou = 0.3072 giou = 0.3072
iou = 0.2987 giou = 0.2987
iou = 0.2903 giou = 0.2903
iou = 0.2821 giou = 0.2821
iou = 0.2739 giou = 0.2739
iou = 0.2658 giou = 0.2658
iou = 0.2579 giou = 0.2579
iou = 0.2500 giou = 0.2500
iou = 0.2422 giou = 0.2422
iou = 0.2346 giou = 0.2346
iou = 0.2270 giou = 0.2270
iou = 0.2195 giou = 0.2195
iou = 0.2121 giou = 0.2121
iou = 0.2048 giou = 0.2048
iou = 0.1976 giou = 0.1976
iou = 0.1905 giou = 0.1905
iou = 0.1834 giou = 0.1834
iou = 0.1765 giou = 0.1765
iou = 0.1696 giou = 0.1696
iou = 0.1628 giou = 0.1628
iou = 0.1561 giou = 0.1561
iou = 0.1494 giou = 0.1494
iou = 0.1429 giou = 0.1429
iou = 0.1364 giou = 0.1364
iou = 0.1299 giou = 0.1299
iou = 0.1236 giou = 0.1236
iou = 0.1173 giou = 0.1173
iou = 0.1111 giou = 0.1111
iou = 0.1050 giou = 0.1050
iou = 0.0989 giou = 0.0989
iou = 0.0929 giou = 0.0929
iou = 0.0870 giou = 0.0870
iou = 0.0811 giou = 0.0811
iou = 0.0753 giou = 0.0753
iou = 0.0695 giou = 0.0695
iou = 0.0638 giou = 0.0638
iou = 0.0582 giou = 0.0582
iou = 0.0526 giou = 0.0526
iou = 0.0471 giou = 0.0471
iou = 0.0417 giou = 0.0417
iou = 0.0363 giou = 0.0363
iou = 0.0309 giou = 0.0309
iou = 0.0256 giou = 0.0256
iou = 0.0204 giou = 0.0204
iou = 0.0152 giou = 0.0152
iou = 0.0101 giou = 0.0101
iou = 0.0050 giou = 0.0050
iou = 0.0000 giou = 0.0000
iou = 0.0000 giou = -0.0050
iou = 0.0000 giou = -0.0099
iou = 0.0000 giou = -0.0148
iou = 0.0000 giou = -0.0196
iou = 0.0000 giou = -0.0244
iou = 0.0000 giou = -0.0291
iou = 0.0000 giou = -0.0338
iou = 0.0000 giou = -0.0385
iou = 0.0000 giou = -0.0431
iou = 0.0000 giou = -0.0476
iou = 0.0000 giou = -0.0521
iou = 0.0000 giou = -0.0566
iou = 0.0000 giou = -0.0610
iou = 0.0000 giou = -0.0654
iou = 0.0000 giou = -0.0698
iou = 0.0000 giou = -0.0741
iou = 0.0000 giou = -0.0783
iou = 0.0000 giou = -0.0826
iou = 0.0000 giou = -0.0868
iou = 0.0000 giou = -0.0909
iou = 0.0000 giou = -0.0950
iou = 0.0000 giou = -0.0991
iou = 0.0000 giou = -0.1031
iou = 0.0000 giou = -0.1071
iou = 0.0000 giou = -0.1111
iou = 0.0000 giou = -0.1150
iou = 0.0000 giou = -0.1189
iou = 0.0000 giou = -0.1228
iou = 0.0000 giou = -0.1266
iou = 0.0000 giou = -0.1304
iou = 0.0000 giou = -0.1342
iou = 0.0000 giou = -0.1379
iou = 0.0000 giou = -0.1416
iou = 0.0000 giou = -0.1453
iou = 0.0000 giou = -0.1489
iou = 0.0000 giou = -0.1525
iou = 0.0000 giou = -0.1561
iou = 0.0000 giou = -0.1597
iou = 0.0000 giou = -0.1632
iou = 0.0000 giou = -0.1667
iou = 0.0000 giou = -0.1701
iou = 0.0000 giou = -0.1736
iou = 0.0000 giou = -0.1770
iou = 0.0000 giou = -0.1803
iou = 0.0000 giou = -0.1837
iou = 0.0000 giou = -0.1870
iou = 0.0000 giou = -0.1903
iou = 0.0000 giou = -0.1935
iou = 0.0000 giou = -0.1968
iou = 0.0000 giou = -0.2000
iou = 0.0000 giou = -0.2032
iou = 0.0000 giou = -0.2063
iou = 0.0000 giou = -0.2095
iou = 0.0000 giou = -0.2126
iou = 0.0000 giou = -0.2157
iou = 0.0000 giou = -0.2188
iou = 0.0000 giou = -0.2218
iou = 0.0000 giou = -0.2248
iou = 0.0000 giou = -0.2278
iou = 0.0000 giou = -0.2308
iou = 0.0000 giou = -0.2337
iou = 0.0000 giou = -0.2366
iou = 0.0000 giou = -0.2395
iou = 0.0000 giou = -0.2424
iou = 0.0000 giou = -0.2453
iou = 0.0000 giou = -0.2481
iou = 0.0000 giou = -0.2509
iou = 0.0000 giou = -0.2537
iou = 0.0000 giou = -0.2565
iou = 0.0000 giou = -0.2593
iou = 0.0000 giou = -0.2620
iou = 0.0000 giou = -0.2647
iou = 0.0000 giou = -0.2674
iou = 0.0000 giou = -0.2701
iou = 0.0000 giou = -0.2727
iou = 0.0000 giou = -0.2754
iou = 0.0000 giou = -0.2780
iou = 0.0000 giou = -0.2806
iou = 0.0000 giou = -0.2832
iou = 0.0000 giou = -0.2857
iou = 0.0000 giou = -0.2883
iou = 0.0000 giou = -0.2908
iou = 0.0000 giou = -0.2933
iou = 0.0000 giou = -0.2958
iou = 0.0000 giou = -0.2982
iou = 0.0000 giou = -0.3007
iou = 0.0000 giou = -0.3031
iou = 0.0000 giou = -0.3056
iou = 0.0000 giou = -0.3080
iou = 0.0000 giou = -0.3103
iou = 0.0000 giou = -0.3127
iou = 0.0000 giou = -0.3151
iou = 0.0000 giou = -0.3174
iou = 0.0000 giou = -0.3197
iou = 0.0000 giou = -0.3220
iou = 0.0000 giou = -0.3243
iou = 0.0000 giou = -0.3266
iou = 0.0000 giou = -0.3289
iou = 0.0000 giou = -0.3311
iou = 0.0000 giou = -0.3333
iou = 0.0000 giou = -0.3355
iou = 0.0000 giou = -0.3377
iou = 0.0000 giou = -0.3399
iou = 0.0000 giou = -0.3421
iou = 0.0000 giou = -0.3443
iou = 0.0000 giou = -0.3464
iou = 0.0000 giou = -0.3485
iou = 0.0000 giou = -0.3506
iou = 0.0000 giou = -0.3528
iou = 0.0000 giou = -0.3548
iou = 0.0000 giou = -0.3569
iou = 0.0000 giou = -0.3590
iou = 0.0000 giou = -0.3610
iou = 0.0000 giou = -0.3631
iou = 0.0000 giou = -0.3651
iou = 0.0000 giou = -0.3671
iou = 0.0000 giou = -0.3691
iou = 0.0000 giou = -0.3711
iou = 0.0000 giou = -0.3730
iou = 0.0000 giou = -0.3750
iou = 0.0000 giou = -0.3769
iou = 0.0000 giou = -0.3789
iou = 0.0000 giou = -0.3808
iou = 0.0000 giou = -0.3827
iou = 0.0000 giou = -0.3846
iou = 0.0000 giou = -0.3865
iou = 0.0000 giou = -0.3884
iou = 0.0000 giou = -0.3902
iou = 0.0000 giou = -0.3921
iou = 0.0000 giou = -0.3939
iou = 0.0000 giou = -0.3958
iou = 0.0000 giou = -0.3976
iou = 0.0000 giou = -0.3994
iou = 0.0000 giou = -0.4012
iou = 0.0000 giou = -0.4030
iou = 0.0000 giou = -0.4048
iou = 0.0000 giou = -0.4065
iou = 0.0000 giou = -0.4083
iou = 0.0000 giou = -0.4100
iou = 0.0000 giou = -0.4118
iou = 0.0000 giou = -0.4135
iou = 0.0000 giou = -0.4152
iou = 0.0000 giou = -0.4169
iou = 0.0000 giou = -0.4186
iou = 0.0000 giou = -0.4203
iou = 0.0000 giou = -0.4220
iou = 0.0000 giou = -0.4236
iou = 0.0000 giou = -0.4253
iou = 0.0000 giou = -0.4269
当矩形2大小为50x100时：
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.5000 giou = 0.5000
iou = 0.4851 giou = 0.4851
iou = 0.4706 giou = 0.4706
iou = 0.4563 giou = 0.4563
iou = 0.4423 giou = 0.4423
iou = 0.4286 giou = 0.4286
iou = 0.4151 giou = 0.4151
iou = 0.4019 giou = 0.4019
iou = 0.3889 giou = 0.3889
iou = 0.3761 giou = 0.3761
iou = 0.3636 giou = 0.3636
iou = 0.3514 giou = 0.3514
iou = 0.3393 giou = 0.3393
iou = 0.3274 giou = 0.3274
iou = 0.3158 giou = 0.3158
iou = 0.3043 giou = 0.3043
iou = 0.2931 giou = 0.2931
iou = 0.2821 giou = 0.2821
iou = 0.2712 giou = 0.2712
iou = 0.2605 giou = 0.2605
iou = 0.2500 giou = 0.2500
iou = 0.2397 giou = 0.2397
iou = 0.2295 giou = 0.2295
iou = 0.2195 giou = 0.2195
iou = 0.2097 giou = 0.2097
iou = 0.2000 giou = 0.2000
iou = 0.1905 giou = 0.1905
iou = 0.1811 giou = 0.1811
iou = 0.1719 giou = 0.1719
iou = 0.1628 giou = 0.1628
iou = 0.1538 giou = 0.1538
iou = 0.1450 giou = 0.1450
iou = 0.1364 giou = 0.1364
iou = 0.1278 giou = 0.1278
iou = 0.1194 giou = 0.1194
iou = 0.1111 giou = 0.1111
iou = 0.1029 giou = 0.1029
iou = 0.0949 giou = 0.0949
iou = 0.0870 giou = 0.0870
iou = 0.0791 giou = 0.0791
iou = 0.0714 giou = 0.0714
iou = 0.0638 giou = 0.0638
iou = 0.0563 giou = 0.0563
iou = 0.0490 giou = 0.0490
iou = 0.0417 giou = 0.0417
iou = 0.0345 giou = 0.0345
iou = 0.0274 giou = 0.0274
iou = 0.0204 giou = 0.0204
iou = 0.0135 giou = 0.0135
iou = 0.0067 giou = 0.0067
iou = 0.0000 giou = 0.0000
iou = 0.0000 giou = -0.0066
iou = 0.0000 giou = -0.0132
iou = 0.0000 giou = -0.0196
iou = 0.0000 giou = -0.0260
iou = 0.0000 giou = -0.0323
iou = 0.0000 giou = -0.0385
iou = 0.0000 giou = -0.0446
iou = 0.0000 giou = -0.0506
iou = 0.0000 giou = -0.0566
iou = 0.0000 giou = -0.0625
iou = 0.0000 giou = -0.0683
iou = 0.0000 giou = -0.0741
iou = 0.0000 giou = -0.0798
iou = 0.0000 giou = -0.0854
iou = 0.0000 giou = -0.0909
iou = 0.0000 giou = -0.0964
iou = 0.0000 giou = -0.1018
iou = 0.0000 giou = -0.1071
iou = 0.0000 giou = -0.1124
iou = 0.0000 giou = -0.1176
iou = 0.0000 giou = -0.1228
iou = 0.0000 giou = -0.1279
iou = 0.0000 giou = -0.1329
iou = 0.0000 giou = -0.1379
iou = 0.0000 giou = -0.1429
iou = 0.0000 giou = -0.1477
iou = 0.0000 giou = -0.1525
iou = 0.0000 giou = -0.1573
iou = 0.0000 giou = -0.1620
iou = 0.0000 giou = -0.1667
iou = 0.0000 giou = -0.1713
iou = 0.0000 giou = -0.1758
iou = 0.0000 giou = -0.1803
iou = 0.0000 giou = -0.1848
iou = 0.0000 giou = -0.1892
iou = 0.0000 giou = -0.1935
iou = 0.0000 giou = -0.1979
iou = 0.0000 giou = -0.2021
iou = 0.0000 giou = -0.2063
iou = 0.0000 giou = -0.2105
iou = 0.0000 giou = -0.2147
iou = 0.0000 giou = -0.2188
iou = 0.0000 giou = -0.2228
iou = 0.0000 giou = -0.2268
iou = 0.0000 giou = -0.2308
iou = 0.0000 giou = -0.2347
iou = 0.0000 giou = -0.2386
iou = 0.0000 giou = -0.2424
iou = 0.0000 giou = -0.2462
iou = 0.0000 giou = -0.2500
iou = 0.0000 giou = -0.2537
iou = 0.0000 giou = -0.2574
iou = 0.0000 giou = -0.2611
iou = 0.0000 giou = -0.2647
iou = 0.0000 giou = -0.2683
iou = 0.0000 giou = -0.2718
iou = 0.0000 giou = -0.2754
iou = 0.0000 giou = -0.2788
iou = 0.0000 giou = -0.2823
iou = 0.0000 giou = -0.2857
iou = 0.0000 giou = -0.2891
iou = 0.0000 giou = -0.2925
iou = 0.0000 giou = -0.2958
iou = 0.0000 giou = -0.2991
iou = 0.0000 giou = -0.3023
iou = 0.0000 giou = -0.3056
iou = 0.0000 giou = -0.3088
iou = 0.0000 giou = -0.3119
iou = 0.0000 giou = -0.3151
iou = 0.0000 giou = -0.3182
iou = 0.0000 giou = -0.3213
iou = 0.0000 giou = -0.3243
iou = 0.0000 giou = -0.3274
iou = 0.0000 giou = -0.3304
iou = 0.0000 giou = -0.3333
iou = 0.0000 giou = -0.3363
iou = 0.0000 giou = -0.3392
iou = 0.0000 giou = -0.3421
iou = 0.0000 giou = -0.3450
iou = 0.0000 giou = -0.3478
iou = 0.0000 giou = -0.3506
iou = 0.0000 giou = -0.3534
iou = 0.0000 giou = -0.3562
iou = 0.0000 giou = -0.3590
iou = 0.0000 giou = -0.3617
iou = 0.0000 giou = -0.3644
iou = 0.0000 giou = -0.3671
iou = 0.0000 giou = -0.3697
iou = 0.0000 giou = -0.3724
iou = 0.0000 giou = -0.3750
iou = 0.0000 giou = -0.3776
iou = 0.0000 giou = -0.3802
iou = 0.0000 giou = -0.3827
iou = 0.0000 giou = -0.3852
iou = 0.0000 giou = -0.3878
iou = 0.0000 giou = -0.3902
iou = 0.0000 giou = -0.3927
iou = 0.0000 giou = -0.3952
iou = 0.0000 giou = -0.3976
iou = 0.0000 giou = -0.4000
iou = 0.0000 giou = -0.4024
iou = 0.0000 giou = -0.4048
iou = 0.0000 giou = -0.4071
iou = 0.0000 giou = -0.4094
iou = 0.0000 giou = -0.4118
iou = 0.0000 giou = -0.4141
iou = 0.0000 giou = -0.4163
iou = 0.0000 giou = -0.4186
iou = 0.0000 giou = -0.4208
iou = 0.0000 giou = -0.4231
iou = 0.0000 giou = -0.4253
iou = 0.0000 giou = -0.4275
iou = 0.0000 giou = -0.4297
iou = 0.0000 giou = -0.4318
iou = 0.0000 giou = -0.4340
iou = 0.0000 giou = -0.4361
iou = 0.0000 giou = -0.4382
iou = 0.0000 giou = -0.4403
iou = 0.0000 giou = -0.4424
iou = 0.0000 giou = -0.4444
iou = 0.0000 giou = -0.4465
iou = 0.0000 giou = -0.4485
iou = 0.0000 giou = -0.4505
iou = 0.0000 giou = -0.4526
iou = 0.0000 giou = -0.4545
iou = 0.0000 giou = -0.4565
iou = 0.0000 giou = -0.4585
iou = 0.0000 giou = -0.4604
iou = 0.0000 giou = -0.4624
iou = 0.0000 giou = -0.4643
iou = 0.0000 giou = -0.4662
iou = 0.0000 giou = -0.4681
iou = 0.0000 giou = -0.4700
iou = 0.0000 giou = -0.4718
iou = 0.0000 giou = -0.4737
iou = 0.0000 giou = -0.4755
iou = 0.0000 giou = -0.4774
iou = 0.0000 giou = -0.4792
iou = 0.0000 giou = -0.4810
iou = 0.0000 giou = -0.4828
iou = 0.0000 giou = -0.4845
iou = 0.0000 giou = -0.4863
iou = 0.0000 giou = -0.4881
iou = 0.0000 giou = -0.4898
iou = 0.0000 giou = -0.4915
iou = 0.0000 giou = -0.4932
iou = 0.0000 giou = -0.4949
iou = 0.0000 giou = -0.4966
iou = 0.0000 giou = -0.4983
当矩形2大小为200x100时：
iou = 0.5000 giou = 0.5000
iou = 0.4925 giou = 0.4925
iou = 0.4851 giou = 0.4851
iou = 0.4778 giou = 0.4778
iou = 0.4706 giou = 0.4706
iou = 0.4634 giou = 0.4634
iou = 0.4563 giou = 0.4563
iou = 0.4493 giou = 0.4493
iou = 0.4423 giou = 0.4423
iou = 0.4354 giou = 0.4354
iou = 0.4286 giou = 0.4286
iou = 0.4218 giou = 0.4218
iou = 0.4151 giou = 0.4151
iou = 0.4085 giou = 0.4085
iou = 0.4019 giou = 0.4019
iou = 0.3953 giou = 0.3953
iou = 0.3889 giou = 0.3889
iou = 0.3825 giou = 0.3825
iou = 0.3761 giou = 0.3761
iou = 0.3699 giou = 0.3699
iou = 0.3636 giou = 0.3636
iou = 0.3575 giou = 0.3575
iou = 0.3514 giou = 0.3514
iou = 0.3453 giou = 0.3453
iou = 0.3393 giou = 0.3393
iou = 0.3333 giou = 0.3333
iou = 0.3274 giou = 0.3274
iou = 0.3216 giou = 0.3216
iou = 0.3158 giou = 0.3158
iou = 0.3100 giou = 0.3100
iou = 0.3043 giou = 0.3043
iou = 0.2987 giou = 0.2987
iou = 0.2931 giou = 0.2931
iou = 0.2876 giou = 0.2876
iou = 0.2821 giou = 0.2821
iou = 0.2766 giou = 0.2766
iou = 0.2712 giou = 0.2712
iou = 0.2658 giou = 0.2658
iou = 0.2605 giou = 0.2605
iou = 0.2552 giou = 0.2552
iou = 0.2500 giou = 0.2500
iou = 0.2448 giou = 0.2448
iou = 0.2397 giou = 0.2397
iou = 0.2346 giou = 0.2346
iou = 0.2295 giou = 0.2295
iou = 0.2245 giou = 0.2245
iou = 0.2195 giou = 0.2195
iou = 0.2146 giou = 0.2146
iou = 0.2097 giou = 0.2097
iou = 0.2048 giou = 0.2048
iou = 0.2000 giou = 0.2000
iou = 0.1952 giou = 0.1952
iou = 0.1905 giou = 0.1905
iou = 0.1858 giou = 0.1858
iou = 0.1811 giou = 0.1811
iou = 0.1765 giou = 0.1765
iou = 0.1719 giou = 0.1719
iou = 0.1673 giou = 0.1673
iou = 0.1628 giou = 0.1628
iou = 0.1583 giou = 0.1583
iou = 0.1538 giou = 0.1538
iou = 0.1494 giou = 0.1494
iou = 0.1450 giou = 0.1450
iou = 0.1407 giou = 0.1407
iou = 0.1364 giou = 0.1364
iou = 0.1321 giou = 0.1321
iou = 0.1278 giou = 0.1278
iou = 0.1236 giou = 0.1236
iou = 0.1194 giou = 0.1194
iou = 0.1152 giou = 0.1152
iou = 0.1111 giou = 0.1111
iou = 0.1070 giou = 0.1070
iou = 0.1029 giou = 0.1029
iou = 0.0989 giou = 0.0989
iou = 0.0949 giou = 0.0949
iou = 0.0909 giou = 0.0909
iou = 0.0870 giou = 0.0870
iou = 0.0830 giou = 0.0830
iou = 0.0791 giou = 0.0791
iou = 0.0753 giou = 0.0753
iou = 0.0714 giou = 0.0714
iou = 0.0676 giou = 0.0676
iou = 0.0638 giou = 0.0638
iou = 0.0601 giou = 0.0601
iou = 0.0563 giou = 0.0563
iou = 0.0526 giou = 0.0526
iou = 0.0490 giou = 0.0490
iou = 0.0453 giou = 0.0453
iou = 0.0417 giou = 0.0417
iou = 0.0381 giou = 0.0381
iou = 0.0345 giou = 0.0345
iou = 0.0309 giou = 0.0309
iou = 0.0274 giou = 0.0274
iou = 0.0239 giou = 0.0239
iou = 0.0204 giou = 0.0204
iou = 0.0169 giou = 0.0169
iou = 0.0135 giou = 0.0135
iou = 0.0101 giou = 0.0101
iou = 0.0067 giou = 0.0067
iou = 0.0033 giou = 0.0033
iou = 0.0000 giou = 0.0000
iou = 0.0000 giou = -0.0033
iou = 0.0000 giou = -0.0066
iou = 0.0000 giou = -0.0099
iou = 0.0000 giou = -0.0132
iou = 0.0000 giou = -0.0164
iou = 0.0000 giou = -0.0196
iou = 0.0000 giou = -0.0228
iou = 0.0000 giou = -0.0260
iou = 0.0000 giou = -0.0291
iou = 0.0000 giou = -0.0323
iou = 0.0000 giou = -0.0354
iou = 0.0000 giou = -0.0385
iou = 0.0000 giou = -0.0415
iou = 0.0000 giou = -0.0446
iou = 0.0000 giou = -0.0476
iou = 0.0000 giou = -0.0506
iou = 0.0000 giou = -0.0536
iou = 0.0000 giou = -0.0566
iou = 0.0000 giou = -0.0596
iou = 0.0000 giou = -0.0625
iou = 0.0000 giou = -0.0654
iou = 0.0000 giou = -0.0683
iou = 0.0000 giou = -0.0712
iou = 0.0000 giou = -0.0741
iou = 0.0000 giou = -0.0769
iou = 0.0000 giou = -0.0798
iou = 0.0000 giou = -0.0826
iou = 0.0000 giou = -0.0854
iou = 0.0000 giou = -0.0881
iou = 0.0000 giou = -0.0909
iou = 0.0000 giou = -0.0937
iou = 0.0000 giou = -0.0964
iou = 0.0000 giou = -0.0991
iou = 0.0000 giou = -0.1018
iou = 0.0000 giou = -0.1045
iou = 0.0000 giou = -0.1071
iou = 0.0000 giou = -0.1098
iou = 0.0000 giou = -0.1124
iou = 0.0000 giou = -0.1150
iou = 0.0000 giou = -0.1176
iou = 0.0000 giou = -0.1202
iou = 0.0000 giou = -0.1228
iou = 0.0000 giou = -0.1254
iou = 0.0000 giou = -0.1279
iou = 0.0000 giou = -0.1304
iou = 0.0000 giou = -0.1329
iou = 0.0000 giou = -0.1354
iou = 0.0000 giou = -0.1379
iou = 0.0000 giou = -0.1404
iou = 0.0000 giou = -0.1429
iou = 0.0000 giou = -0.1453
iou = 0.0000 giou = -0.1477
iou = 0.0000 giou = -0.1501
iou = 0.0000 giou = -0.1525
iou = 0.0000 giou = -0.1549
iou = 0.0000 giou = -0.1573
iou = 0.0000 giou = -0.1597
iou = 0.0000 giou = -0.1620
iou = 0.0000 giou = -0.1643
iou = 0.0000 giou = -0.1667
iou = 0.0000 giou = -0.1690
iou = 0.0000 giou = -0.1713
iou = 0.0000 giou = -0.1736
iou = 0.0000 giou = -0.1758
iou = 0.0000 giou = -0.1781
iou = 0.0000 giou = -0.1803
iou = 0.0000 giou = -0.1826
iou = 0.0000 giou = -0.1848
iou = 0.0000 giou = -0.1870
iou = 0.0000 giou = -0.1892
iou = 0.0000 giou = -0.1914
iou = 0.0000 giou = -0.1935
iou = 0.0000 giou = -0.1957
iou = 0.0000 giou = -0.1979
iou = 0.0000 giou = -0.2000
iou = 0.0000 giou = -0.2021
iou = 0.0000 giou = -0.2042
iou = 0.0000 giou = -0.2063
iou = 0.0000 giou = -0.2084
iou = 0.0000 giou = -0.2105
iou = 0.0000 giou = -0.2126
iou = 0.0000 giou = -0.2147
iou = 0.0000 giou = -0.2167
iou = 0.0000 giou = -0.2188
iou = 0.0000 giou = -0.2208
iou = 0.0000 giou = -0.2228
iou = 0.0000 giou = -0.2248
iou = 0.0000 giou = -0.2268
iou = 0.0000 giou = -0.2288
iou = 0.0000 giou = -0.2308
iou = 0.0000 giou = -0.2327
iou = 0.0000 giou = -0.2347
iou = 0.0000 giou = -0.2366
iou = 0.0000 giou = -0.2386
iou = 0.0000 giou = -0.2405
iou = 0.0000 giou = -0.2424
iou = 0.0000 giou = -0.2443
iou = 0.0000 giou = -0.2462
iou = 0.0000 giou = -0.2481
iou = 0.0000 giou = -0.2500
iou = 0.0000 giou = -0.2519
iou = 0.0000 giou = -0.2537
iou = 0.0000 giou = -0.2556
iou = 0.0000 giou = -0.2574
iou = 0.0000 giou = -0.2593
iou = 0.0000 giou = -0.2611
iou = 0.0000 giou = -0.2629
iou = 0.0000 giou = -0.2647
iou = 0.0000 giou = -0.2665
iou = 0.0000 giou = -0.2683
iou = 0.0000 giou = -0.2701
iou = 0.0000 giou = -0.2718
iou = 0.0000 giou = -0.2736
iou = 0.0000 giou = -0.2754
iou = 0.0000 giou = -0.2771
iou = 0.0000 giou = -0.2788
iou = 0.0000 giou = -0.2806
iou = 0.0000 giou = -0.2823
iou = 0.0000 giou = -0.2840
iou = 0.0000 giou = -0.2857
iou = 0.0000 giou = -0.2874
iou = 0.0000 giou = -0.2891
iou = 0.0000 giou = -0.2908
iou = 0.0000 giou = -0.2925
iou = 0.0000 giou = -0.2941
iou = 0.0000 giou = -0.2958
iou = 0.0000 giou = -0.2974
iou = 0.0000 giou = -0.2991
iou = 0.0000 giou = -0.3007
iou = 0.0000 giou = -0.3023
iou = 0.0000 giou = -0.3039
iou = 0.0000 giou = -0.3056
iou = 0.0000 giou = -0.3072
iou = 0.0000 giou = -0.3088
iou = 0.0000 giou = -0.3103
iou = 0.0000 giou = -0.3119
iou = 0.0000 giou = -0.3135
iou = 0.0000 giou = -0.3151
iou = 0.0000 giou = -0.3166
iou = 0.0000 giou = -0.3182
iou = 0.0000 giou = -0.3197
iou = 0.0000 giou = -0.3213
iou = 0.0000 giou = -0.3228
iou = 0.0000 giou = -0.3243
iou = 0.0000 giou = -0.3258
iou = 0.0000 giou = -0.3274
iou = 0.0000 giou = -0.3289
iou = 0.0000 giou = -0.3304
iou = 0.0000 giou = -0.3318
当矩形2大小为100x200时：
iou = 0.5000 giou = 0.5000
iou = 0.4901 giou = 0.4851
iou = 0.4804 giou = 0.4706
iou = 0.4709 giou = 0.4563
iou = 0.4615 giou = 0.4423
iou = 0.4524 giou = 0.4286
iou = 0.4434 giou = 0.4151
iou = 0.4346 giou = 0.4019
iou = 0.4259 giou = 0.3889
iou = 0.4174 giou = 0.3761
iou = 0.4091 giou = 0.3636
iou = 0.4009 giou = 0.3514
iou = 0.3929 giou = 0.3393
iou = 0.3850 giou = 0.3274
iou = 0.3772 giou = 0.3158
iou = 0.3696 giou = 0.3043
iou = 0.3621 giou = 0.2931
iou = 0.3547 giou = 0.2821
iou = 0.3475 giou = 0.2712
iou = 0.3403 giou = 0.2605
iou = 0.3333 giou = 0.2500
iou = 0.3264 giou = 0.2397
iou = 0.3197 giou = 0.2295
iou = 0.3130 giou = 0.2195
iou = 0.3065 giou = 0.2097
iou = 0.3000 giou = 0.2000
iou = 0.2937 giou = 0.1905
iou = 0.2874 giou = 0.1811
iou = 0.2812 giou = 0.1719
iou = 0.2752 giou = 0.1628
iou = 0.2692 giou = 0.1538
iou = 0.2634 giou = 0.1450
iou = 0.2576 giou = 0.1364
iou = 0.2519 giou = 0.1278
iou = 0.2463 giou = 0.1194
iou = 0.2407 giou = 0.1111
iou = 0.2353 giou = 0.1029
iou = 0.2299 giou = 0.0949
iou = 0.2246 giou = 0.0870
iou = 0.2194 giou = 0.0791
iou = 0.2143 giou = 0.0714
iou = 0.2092 giou = 0.0638
iou = 0.2042 giou = 0.0563
iou = 0.1993 giou = 0.0490
iou = 0.1944 giou = 0.0417
iou = 0.1897 giou = 0.0345
iou = 0.1849 giou = 0.0274
iou = 0.1803 giou = 0.0204
iou = 0.1757 giou = 0.0135
iou = 0.1711 giou = 0.0067
iou = 0.1667 giou = 0.0000
iou = 0.1623 giou = -0.0066
iou = 0.1579 giou = -0.0132
iou = 0.1536 giou = -0.0196
iou = 0.1494 giou = -0.0260
iou = 0.1452 giou = -0.0323
iou = 0.1410 giou = -0.0385
iou = 0.1369 giou = -0.0446
iou = 0.1329 giou = -0.0506
iou = 0.1289 giou = -0.0566
iou = 0.1250 giou = -0.0625
iou = 0.1211 giou = -0.0683
iou = 0.1173 giou = -0.0741
iou = 0.1135 giou = -0.0798
iou = 0.1098 giou = -0.0854
iou = 0.1061 giou = -0.0909
iou = 0.1024 giou = -0.0964
iou = 0.0988 giou = -0.1018
iou = 0.0952 giou = -0.1071
iou = 0.0917 giou = -0.1124
iou = 0.0882 giou = -0.1176
iou = 0.0848 giou = -0.1228
iou = 0.0814 giou = -0.1279
iou = 0.0780 giou = -0.1329
iou = 0.0747 giou = -0.1379
iou = 0.0714 giou = -0.1429
iou = 0.0682 giou = -0.1477
iou = 0.0650 giou = -0.1525
iou = 0.0618 giou = -0.1573
iou = 0.0587 giou = -0.1620
iou = 0.0556 giou = -0.1667
iou = 0.0525 giou = -0.1713
iou = 0.0495 giou = -0.1758
iou = 0.0464 giou = -0.1803
iou = 0.0435 giou = -0.1848
iou = 0.0405 giou = -0.1892
iou = 0.0376 giou = -0.1935
iou = 0.0348 giou = -0.1979
iou = 0.0319 giou = -0.2021
iou = 0.0291 giou = -0.2063
iou = 0.0263 giou = -0.2105
iou = 0.0236 giou = -0.2147
iou = 0.0208 giou = -0.2188
iou = 0.0181 giou = -0.2228
iou = 0.0155 giou = -0.2268
iou = 0.0128 giou = -0.2308
iou = 0.0102 giou = -0.2347
iou = 0.0076 giou = -0.2386
iou = 0.0051 giou = -0.2424
iou = 0.0025 giou = -0.2462
iou = 0.0000 giou = -0.2500
iou = 0.0000 giou = -0.2537
iou = 0.0000 giou = -0.2574
iou = 0.0000 giou = -0.2611
iou = 0.0000 giou = -0.2647
iou = 0.0000 giou = -0.2683
iou = 0.0000 giou = -0.2718
iou = 0.0000 giou = -0.2754
iou = 0.0000 giou = -0.2788
iou = 0.0000 giou = -0.2823
iou = 0.0000 giou = -0.2857
iou = 0.0000 giou = -0.2891
iou = 0.0000 giou = -0.2925
iou = 0.0000 giou = -0.2958
iou = 0.0000 giou = -0.2991
iou = 0.0000 giou = -0.3023
iou = 0.0000 giou = -0.3056
iou = 0.0000 giou = -0.3088
iou = 0.0000 giou = -0.3119
iou = 0.0000 giou = -0.3151
iou = 0.0000 giou = -0.3182
iou = 0.0000 giou = -0.3213
iou = 0.0000 giou = -0.3243
iou = 0.0000 giou = -0.3274
iou = 0.0000 giou = -0.3304
iou = 0.0000 giou = -0.3333
iou = 0.0000 giou = -0.3363
iou = 0.0000 giou = -0.3392
iou = 0.0000 giou = -0.3421
iou = 0.0000 giou = -0.3450
iou = 0.0000 giou = -0.3478
iou = 0.0000 giou = -0.3506
iou = 0.0000 giou = -0.3534
iou = 0.0000 giou = -0.3562
iou = 0.0000 giou = -0.3590
iou = 0.0000 giou = -0.3617
iou = 0.0000 giou = -0.3644
iou = 0.0000 giou = -0.3671
iou = 0.0000 giou = -0.3697
iou = 0.0000 giou = -0.3724
iou = 0.0000 giou = -0.3750
iou = 0.0000 giou = -0.3776
iou = 0.0000 giou = -0.3802
iou = 0.0000 giou = -0.3827
iou = 0.0000 giou = -0.3852
iou = 0.0000 giou = -0.3878
iou = 0.0000 giou = -0.3902
iou = 0.0000 giou = -0.3927
iou = 0.0000 giou = -0.3952
iou = 0.0000 giou = -0.3976
iou = 0.0000 giou = -0.4000
iou = 0.0000 giou = -0.4024
iou = 0.0000 giou = -0.4048
iou = 0.0000 giou = -0.4071
iou = 0.0000 giou = -0.4094
iou = 0.0000 giou = -0.4118
iou = 0.0000 giou = -0.4141
iou = 0.0000 giou = -0.4163
iou = 0.0000 giou = -0.4186
iou = 0.0000 giou = -0.4208
iou = 0.0000 giou = -0.4231
iou = 0.0000 giou = -0.4253
iou = 0.0000 giou = -0.4275
iou = 0.0000 giou = -0.4297
iou = 0.0000 giou = -0.4318
iou = 0.0000 giou = -0.4340
iou = 0.0000 giou = -0.4361
iou = 0.0000 giou = -0.4382
iou = 0.0000 giou = -0.4403
iou = 0.0000 giou = -0.4424
iou = 0.0000 giou = -0.4444
iou = 0.0000 giou = -0.4465
iou = 0.0000 giou = -0.4485
iou = 0.0000 giou = -0.4505
iou = 0.0000 giou = -0.4526
iou = 0.0000 giou = -0.4545
iou = 0.0000 giou = -0.4565
iou = 0.0000 giou = -0.4585
iou = 0.0000 giou = -0.4604
iou = 0.0000 giou = -0.4624
iou = 0.0000 giou = -0.4643
iou = 0.0000 giou = -0.4662
iou = 0.0000 giou = -0.4681
iou = 0.0000 giou = -0.4700
iou = 0.0000 giou = -0.4718
iou = 0.0000 giou = -0.4737
iou = 0.0000 giou = -0.4755
iou = 0.0000 giou = -0.4774
iou = 0.0000 giou = -0.4792
iou = 0.0000 giou = -0.4810
iou = 0.0000 giou = -0.4828
iou = 0.0000 giou = -0.4845
iou = 0.0000 giou = -0.4863
iou = 0.0000 giou = -0.4881
iou = 0.0000 giou = -0.4898
iou = 0.0000 giou = -0.4915
iou = 0.0000 giou = -0.4932
iou = 0.0000 giou = -0.4949
iou = 0.0000 giou = -0.4966
iou = 0.0000 giou = -0.4983
iou = 0.0000 giou = -0.5000
iou = 0.0000 giou = -0.5017
iou = 0.0000 giou = -0.5033
iou = 0.0000 giou = -0.5050
iou = 0.0000 giou = -0.5066
iou = 0.0000 giou = -0.5082
iou = 0.0000 giou = -0.5098
iou = 0.0000 giou = -0.5114
iou = 0.0000 giou = -0.5130
iou = 0.0000 giou = -0.5146
iou = 0.0000 giou = -0.5161
iou = 0.0000 giou = -0.5177
iou = 0.0000 giou = -0.5192
iou = 0.0000 giou = -0.5208
iou = 0.0000 giou = -0.5223
iou = 0.0000 giou = -0.5238
iou = 0.0000 giou = -0.5253
iou = 0.0000 giou = -0.5268
iou = 0.0000 giou = -0.5283
iou = 0.0000 giou = -0.5298
iou = 0.0000 giou = -0.5312
iou = 0.0000 giou = -0.5327
iou = 0.0000 giou = -0.5342
iou = 0.0000 giou = -0.5356
iou = 0.0000 giou = -0.5370
iou = 0.0000 giou = -0.5385
iou = 0.0000 giou = -0.5399
iou = 0.0000 giou = -0.5413
iou = 0.0000 giou = -0.5427
iou = 0.0000 giou = -0.5441
iou = 0.0000 giou = -0.5455
iou = 0.0000 giou = -0.5468
iou = 0.0000 giou = -0.5482
iou = 0.0000 giou = -0.5495
iou = 0.0000 giou = -0.5509
iou = 0.0000 giou = -0.5522
iou = 0.0000 giou = -0.5536
iou = 0.0000 giou = -0.5549
iou = 0.0000 giou = -0.5562
iou = 0.0000 giou = -0.5575
iou = 0.0000 giou = -0.5588
iou = 0.0000 giou = -0.5601
iou = 0.0000 giou = -0.5614
iou = 0.0000 giou = -0.5627
iou = 0.0000 giou = -0.5640
iou = 0.0000 giou = -0.5652
iou = 0.0000 giou = -0.5665
iou = 0.0000 giou = -0.5677
iou = 0.0000 giou = -0.5690
iou = 0.0000 giou = -0.5702