博客
关于我
iou iof matrix_iof
阅读量:479 次
发布时间:2019-02-26

本文共 660 字,大约阅读时间需要 2 分钟。

 

matrix_iof 的意思是裁剪后的roi除以boxes,有全覆盖的则留下。

roi是裁剪后的,boxes是原来的框。

rect1 = [1, 1, 3, 5]    # (top, left, bottom, right)    rect2 = [1, 1, 3, 3]    boxes = np.array([rect1])    roi = np.array([rect2])    #    value = matrix_iof(boxes,roi)    print(value)    flag = (value >= 1)    if not flag.any():        print("no good")

增强的原理是,裁剪大图,变成小图,如果还有目标,则ok。

 

scale = random.uniform(0.6, 1.0)

是裁剪后的图还是比较大,这样就不会放大,增强小目标检测,对大目标检测没帮助。

import numpy as np#相交面积除以a面积def matrix_iof(a, b):    """    return 相交面积除以a面积    """    lt = np.maximum(a[:, :2], b[:, :2]) #x1 y1 最大值    rb = np.minimum(a[:, 2:], b[:, 2:])# x2 y2 最小值    area_i = np.prod(rb - lt, axis=1) * (lt < rb).all(axis=

转载地址:http://copz.baihongyu.com/

你可能感兴趣的文章
NN&DL4.8 What does this have to do with the brain?
查看>>
nnU-Net 终极指南
查看>>
No 'Access-Control-Allow-Origin' header is present on the requested resource.
查看>>
No 'Access-Control-Allow-Origin' header is present on the requested resource.
查看>>
NO 157 去掉禅道访问地址中的zentao
查看>>
no available service ‘default‘ found, please make sure registry config corre seata
查看>>
No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
查看>>
no connection could be made because the target machine actively refused it.问题解决
查看>>
No Datastore Session bound to thread, and configuration does not allow creation of non-transactional
查看>>
No fallbackFactory instance of type class com.ruoyi---SpringCloud Alibaba_若依微服务框架改造---工作笔记005
查看>>
No Feign Client for loadBalancing defined. Did you forget to include spring-cloud-starter-loadbalanc
查看>>
No mapping found for HTTP request with URI [/...] in DispatcherServlet with name ...的解决方法
查看>>
No mapping found for HTTP request with URI [/logout.do] in DispatcherServlet with name 'springmvc'
查看>>
No module named 'crispy_forms'等使用pycharm开发
查看>>
No module named 'pandads'
查看>>
No module named cv2
查看>>
No module named tensorboard.main在安装tensorboardX的时候遇到的问题
查看>>
No module named ‘MySQLdb‘错误解决No module named ‘MySQLdb‘错误解决
查看>>
No new migrations found. Your system is up-to-date.
查看>>
No qualifying bean of type XXX found for dependency XXX.
查看>>