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Fusion Series of Unmanned Sensors (11) - Camera Internal Reference Calibration Summary of this chapter: This chapter explains the causes of camera distortion, calibration principle, and how to calibrate camera internal parameters through opencv. I. Causes of Camera Distortion There are two main di ...

Intro Last time we implemented a simple Timer-based timing task. Details can be seen This article. However, it may not be appropriate to use this method slowly. Some tasks may only want to execute in a certain period of time. It is not so flexible to use timer only. We hope that we can specify a cron expression like quartz to specify the execu ...

Preface In the game, the timer is used to update the picture and action. The ccschedule class of the system is used. Next, we will talk about the implementation mechanism of timers. Definition scheduler = new (std::nothrow) Scheduler(); _actionManager = new (std::nothrow) ActionManager(); ...

_We strongly recommend a simple and easy-to-use C++JSON library, CJsonObject, to make using json as convenient as using C++ native structure. CJsonObject It's an excellent C++ JSON library, probably the simplest C++ JSON library you've ever seen.The open source address for CJsonObject is https://github.com/Bwar/CJsonObject and https://gitee.com ...

Effect attribute RefreshIndicator is a Material Design Style drop-down refresh control, so just like Swipe RefreshLayout in android, it can be nested in the outer layer. Let's first look at the attributes: const RefreshIndicator({ Key key, @required this.child, this.displacement = 40. ...

Work is often repeated to write some methods, organized and hosted to In GitHub Warehouse ,Build an npm package, each time used, download and package into a file on demand, easy to use;<!--more--> Project address NPM address: https://www.npmjs.com/package/wxh-tools;GITHUB: https://github.com/Wxh16144/wxh-tools; Tool screenshots: Project ...

These two days, for convenience, I tossed about a tool I wrote, and studied how to publish my Python library. Recorded here, I mainly introduced the following contents. The complete process of publishing Python Libraries The Method of Publishing Your Command Line Tools through Python Library Check d ...

A copy plug-in that needs to be used in the work is good for simple compatibility, because you can translate it yourself without finding the introduction of the Chinese version. The level is limited, not necessarily all according to the article. If you have any questions, you are welcome to make corrections! ______.For a more intuitive display ...

brief introduction With the rise of mobile development and front-end development, more and more Web back-end applications tend to implement Restful APIs.The Restful API is a simple, easy-to-use front-end and back-end separation scheme that simply handles client requests and returns the results without r ...

sumodules git submodules test 1. Use scenarios Submodules have a situation that we often encounter: a project in one job needs to include and use another project. Maybe it's a third-party library, or a library you developed independently for multiple parent projects.Now here's the problem: You want to think of them as two separate projects, and ...