Image feature point SIFT feature point

Image feature point SIFT feature point As for SIFT feature points, the following three blogs are very detailed and will not be repeated again.https://mp.weixin.qq.com/s/XVB88f119gRqpwTTRvTyrAhttps://mp.weixin.qq.com/s/Vx-8xsXd6aXoJupr0BEMowhttps://mp.weixin.qq.com/s/8WAgDmc1R_9rGRjM9eanDg OpenCV code test #include <iostre ...

Posted on Mon, 18 Nov 2019 11:53:44 -0500 by sella2009

OpenCV reading and writing XML and YAML format files

OpenCV reading and writing XML and YAML format files 1. What is XML, YAML XML: the earliest general information markup language, with good scalability but tedious YAML: non markup language, compared with XML, which uses empty indented lines, shows the structure of data, simplifies writing format, reduces complexity and improv ...

Posted on Sun, 17 Nov 2019 14:32:25 -0500 by Xajel

The most complete camera calibration process (Baidu online disk source code + project sharing)

Camera calibration procedure 1. Prepare a series of pictures for camera calibration, and store the path information of the pictures in the chess.txt file; Baidu online disk links pictures and chess.txt file. When running, change the path of pictures to the path you placed: Links: https://pan.baidu.com/s/1OLpD7csfKtjuEMCeP7yv ...

Posted on Sat, 16 Nov 2019 09:36:55 -0500 by Xproterg^vi

Surprised!Python can detect dynamic object colors!

Preface Text and pictures of the text come from the network for learning and communication purposes only. They do not have any commercial use. Copyright is owned by the original author. If you have any questions, please contact us in time for processing. Author: Li Qiujian PS: If you need Python learning materials for your child, click on the l ...

Posted on Thu, 14 Nov 2019 01:41:23 -0500 by aesir5

Feature detection and extraction by orb slam2

Compare the default method of opencv with the rewriting method of opencv in ORB-SLAM2, and compare the results of image feature extraction between the two methods. Write in the same file for comparison. The main functions are as follows: #include <iostream> #include <opencv2/opencv.hpp& ...

Posted on Sat, 02 Nov 2019 01:01:09 -0400 by thessoro

Python reads multiple USB cameras through cv2

The camera data can be easily obtained through cv2. For example, in the following steps, you can turn on the camera display and save the picture with the q key. import cv2 capture = cv2.VideoCapture(0) # Turn on the camera if capture.isOpened(): # The following two steps set the width and he ...

Posted on Thu, 31 Oct 2019 22:48:24 -0400 by pmt2k

1. Opencv obtains the information of each layer of the imported DNN model

1. Opencv obtains the information of each layer of the imported DNN model I. code 1. C + + code 2. Python code II. Relevant instructions 1. Support in-depth learning framework 2. There are three parameters to import the model I. code 1. C + + code #include <opencv2/opencv.hpp> #inclu ...

Posted on Wed, 30 Oct 2019 12:37:46 -0400 by devsanctum

Using OpenCV in Origin C

Origin wraps opencv so that opencv related functions can be called in Origin C. Here is an example of OpenCV website to show how to call opencv in Origin C. 1. Include header file #include <../OriginLab/opencv.h> This header file actually contains other header files, including OpenCV type related, core, image processing, Origin's own impl ...

Posted on Mon, 21 Oct 2019 11:08:40 -0400 by ricoche

centos builds face recognition environment

0. Official document of face & Recognition https://github.com/ageitgey/face_recognition   1. Install face recognition 1.1 installing dlib 1) installation and development Environmental Science [root@localhost ~]# yum update[root@localhost ~]#yum groupinstall "Development Tools"   2) install OpenCV [root@localhost ~]# yum ...

Posted on Fri, 18 Oct 2019 10:48:07 -0400 by niroshan

camera calibration

In opencv, a set of functions are provided for camera calibration. The returned values of calibration include: camera internal parameter matrix (FX FY XC YC YC), camera external parameter matrix (RT) and distortion matrix. The calibration procedure is as follows: 1. Prepare the chessboard, and the picture of chessboard can be printed by yours ...

Posted on Wed, 16 Oct 2019 18:42:24 -0400 by xterra