D. Haar Features Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/549/problem/D Description The first algorithm for detecting a face on the image working in realtime was developed by Paul Viola and Michael Jones in 2001. A p…

The first algorithm for detecting a face on the image working in realtime was developed by Paul Viola and Michael Jones in 2001. A part of the algorithm is a procedure that computes Haar features. As part of this task, we consider a simplified model…

https://codeforces.com/gym/253910/problem/D D. Haar Features time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The first algorithm for detecting a face on the image working in realtime was de…

题目:https://codeforces.com/contest/549/problem/D D. Haar Features time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The first algorithm for detecting a face on the image working in realtime wa…

D. Haar Features time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The first algorithm for detecting a face on the image working in realtime was developed by Paul Viola and Michael Jones in 2…

Speed Up Tracking by Ignoring Features CVPR 2014 Abstract:本文提出一种特征选择的算法,来实现用最"精简"的特征以进行目标跟踪.重点是提出一种上界 (Upper Bound)来表示一块区域包含目标物体的概率,并且忽略掉这个 bound比较小的区域.我们的实验表明,忽略掉 90%的特征,仍然取得了不错的结果(未损失精度). Ignoring Features in Tracking .  基于滑动窗口的跟踪器,计算大量的 bound…

<FAQ:OpenCV Haartraining>——使用OpenCV训练Haar like+Adaboost分类器的常见问题 最近使用OpenCV训练Haar like+Adaboost分类器,查阅了一些资料,这些资料对训练过程陈述的很详细,但是缺少一些细节,偶然看到了一篇英文资料,觉得很好,简单翻译了自己觉得有用的部分. 原文链接:FAQ:OpenCV Haartraining 关于正样本图片 1.I have  positive images, how create vec file o…

http://blog.csdn.net/xiaowei_cqu/article/details/8216109 Haar特征/矩形特征 Haar特征本身并不复杂,就是用图中黑色矩形所有像素值的和减去白色矩形所有像素值的和. 看过Rainer Lienhart文章的人知道,Rainer Lienhart在文章中给出了计算特定图像面积内Haar特征个数公式.小女才拙,到最后也没推出那个公式来,还望看明白的大牛留言指教~ Haar特征个数计算 Rainer Lienhart计算Haar特征个数的公式…

下面是题解,做的不好.下一步的目标是rating涨到 1800,没打过几次cf A. Face Detection Author: Monyura One should iterate through each 2x2 square and check if it is possible to rearrange letters in such way they they form the word "face". It could be done i.e. by sorting al…

A - Guess Your Way Out! Time Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 507C Description Amr bought a new video game "Guess Your Way Out!". The goal of the game is to find an ex…