Total s panoramic camera of ubuntu system is transformed by ROS image

Total s panoramic camera of ubuntu system is transformed by ROS image Following a blog post, after the Theta S camera was connected to the ROS system, the image matrix was published on the / image_raw topic. Let's start the file libuvc_camera.launch in the previous blog. At this time, the image has be ...

Posted by Jove on Sat, 08 Feb 2020 00:36:02 -0800

[Python] 25 useful Python snippets to help you with your daily work

Introduction Python is a general advanced programming language.There are many things you can do with it, such as developing desktop GUI applications, Web sites, Web applications, and so on. Python also allows developers to focus on the core functionality of the application by handling common programm ...

Posted by Goafer on Fri, 07 Feb 2020 22:20:58 -0800

Download files in Python

Prerequisite The requests module needs to be installed in advance: pip install requests Put it in code. import requests url = 'XXX' #File download source URL filename = '' #New file name after downloading to local r = requests.get(url) with open(filename, "wb") as code: code.write(r.content) combat exercise with ammunition From target URL ...

Posted by realnsleo on Fri, 07 Feb 2020 08:06:43 -0800

Serialization operation of Django

Written in front Recently, I was trying to drum up wechat applets. I wanted to use Django as the back end to display data in wechat applets. When I write Django, I usually directly throw the QuerySet object to the template and then render it. But in the wechat applet, this object cannot be accepted. Y ...

Posted by JPark on Fri, 07 Feb 2020 07:01:23 -0800

Construction of pixhawk development environment under Ubuntu 16.04

1 Introduction I am a px4 Xiaobai. I don't know a lot about programming. I am a researcher. I am engaged in the theory of flight mechanics and control direction deviation. But my tutor is engaged in the development direction of px4. I don't have to set up a px4 development environment and learn the co ...

Posted by hyngvesson on Thu, 06 Feb 2020 02:21:10 -0800

Python web crawler and information extraction note 10 HTML content search method based on bs4 Library

Introduction to 01 requests Library of Python web crawler and information extraction notes Notes on Python web crawler and information extraction 02 "there is a way to steal" from web crawler Python web crawler and information extraction notes 03 requests library web crawler practice (5 i ...

Posted by sfmnetsys on Thu, 06 Feb 2020 01:20:50 -0800

Python + Opencv / Dlib for face detection (video / picture)

The records of the previous articles are more general and have not been sorted out systematically. Then I want to sort out the learning process of these years by myself.This sticker is proof. python: scripting languages, computers do not recognize high-level languages, so when we run a high-level la ...

Posted by aosmith on Wed, 05 Feb 2020 20:11:17 -0800

Python Crawler Serial 5-Proxy, Cookie Resolution

1. ProxyHandler Processing (Proxy Server) 1. Using proxy IP is a common means of crawling 2. Get the address of the proxy server: www.xicidaili.com www.goubanjia.com 3. Proxies are used to hide real access. Proxies do not allow frequent access to a fixed site, so proxies must be many. 4. Basic usage steps: (1) Set proxy address (2) Create a Pox ...

Posted by landavia on Wed, 05 Feb 2020 08:49:12 -0800

The implementation of the shortest path finding algorithm (dixstra algorithm) in php

Refer to Chapter 7 of algorithm diagram for details. The original book was written in python, and I wrote it again in PHP, which was slightly improved Test these three exercises in the book   I found another "difficult" question on the Internet   Upper Code: class ShortPath{ ...

Posted by Pioden on Wed, 05 Feb 2020 07:13:55 -0800

PyTorch: Digital recognizer competition

background Since I learned PyTorch last time, I have left it for a long time. I almost forgot it. After brushing "die into DL PyTorch" once again, I tried to do the one on Kaggle Digit Reconizer Match. Reference material https://tangshusen.me/Dive-into-DL-PyTorch/#/ https://www.kaggle.com/ ...

Posted by next on Wed, 05 Feb 2020 07:10:16 -0800