In this code, we convertlist1andlist2to sets usingset()function, find the union usingunion()function, and then convert the resulting set back to a list usinglist()function. Conclusion In this article, we discussed theintersectionandunionfunctions in Python. These functions are useful when we ...
# print(set(a)) # {2,3,4,5,6,8,9} # print(list(set(a))) # [2,3,4,5,6,8,9]'''union()⽅法 描述:union() 取并集,效果等同于|,重复元素只会出现⼀次,但是括号⾥可以是 list,tuple,其他 , 甚⾄是 dict 语法:set.union(set1, set2...) 参数: set1--必需,合并的⽬标...
iou=interArea/float(boxAArea+boxBArea-interArea)#returnthe intersection over union valuereturniou 后记 IoU在FCN中称为IU,初看Fully Convolutional Networks for Semantic Segmentation论文,其中的IU概念没有能理解,其实那里的IU也就是IoU,检测物体轮廓不一定非得是方框,也可以是沿着物体的边线: 在实际的任务中,...
union()⽅法 描述:union() 取并集,效果等同于 | ,重复元素只会出现⼀次,但是括号⾥可以是 list,tuple,其他 , 甚⾄是 dict 语法:set.union(set1, set2...) 参数: set1 -- 必需,合并的⽬标集合 set2 -- 可选,其他要合并的集合,可以多个,多个使⽤逗号 , 隔开。 ''' # 1.找出a和b中...
简介:本文将介绍如何使用Python计算图像分割中的IOU(Intersection over Union),并给出示例代码。IOU是一种评估图像分割算法性能的重要指标,用于衡量预测的分割区域与实际分割区域的重叠程度。通过计算IOU,我们可以了解算法的准确性和鲁棒性,进而优化算法以提高分割效果。
python的集合set和其他语言类似,是一个无序不重复元素集, 可用于消除重复元素。 支持union(联合), intersection(交), difference(差)和sysmmetric difference(对称差集)等数学运算。 不支持 indexing, slicing, 或其它类序列(sequence-like)的操作。因为,sets作为一个无序的集合,sets不记录元素位置或者插入点。
python 并集union, 交集intersection, 差集difference, 对称差集symmetric_difference a,b,c = [1,2,3],[2,3,4],[3,4,5] print('--->union') print('a,b取并集:',set(a).union(b)) print('a,b取并集:',set(a)|set(b)) print('a,b,c取并集:',set(a).union(b,c)) print('a,b,...
def bb_intersection_over_union(boxA, boxB): boxA = [int(x) for x in boxA] boxB = [int(x) for x in boxB] xA = max(boxA[0], boxB[0]) yA = max(boxA[1], boxB[1]) xB = min(boxA[2], boxB[2]) yB = min(boxA[3], boxB[3]) interArea = max(0, xB - xA...
Write a Python program that performs common set operations like union, intersection, and difference of two frozensets. Sample Solution: Code: defmain():frozenset_x=frozenset([1,2,3,4,5])frozenset_y=frozenset([0,1,3,7,8,10])print("Original frozensets:")print(frozenset_x)print(...
Write a Python program that creates two 'Counter' objects and finds their union, intersection, and difference.Sample Solution:Code:from collections import Counter # Create two Counter objects ctr1 = Counter(x=3, y=2, z=10) ctr2 = Counter(x=1, y=2, z=3) # Union of counters...