I have been looking into the possibility of using Flutter and Dart to implement a control GUI for a camera, the main target is a web app, I am looking at flutter as an alternative to web frameworks like React. The flutter platform is very impressive and Dart itself is a nice little language. Flutter […]
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I have been working on and off on a simple C++ toolkit for working with GPS position path data, the type of data that might have been recorded on a mountain hike or run etc. the project is called gps_path_tools and can be found on GitHub. The toolkit is a small collection of types and […]
I hit a problem recently whereby CTlFactory::EnumerateDevices() would not find my connected Balser cameras while Pylon Viewer would find and connect to them OK. On investigation I discovered that if WiFi was enabled on the host, then the GigE Vision Device discovery broadcast messages would not be sent over GigE to the cameras. With WiFi […]
How to convert between Decimal Degrees & Minutes (DDM) to Decimal Degrees (DD). I always prefer to represent latitude and longitude as full decimal degrees (DD), I find it much simpler and you can do calculations with the values. However, other people and devices love to use the slightly (to me) esoteric Decimal Degrees and […]
Anybody who works with images often have probably come across .Net Bitmaps (System.Drawing.Bitmap) with their staggeringly slow GetPixel() and SetPixel() methods. Now, if you are going to work directly with images then you’re probably in the wrong place if you are using C# and .Net. However, sometimes you may want to do a small amount […]
I couldn’t get KDevelop to stop at breakpoints even on simple ‘hello world’ C++ projects. It appeared that CMAKE_BUILD_TYPE was being correctly set and GDB worked fine from the command-line, but from within kdevelop breakpoints were never respected! I think the problem stemmed from the Cache Value for CMAKE_BUILD_TYPE being empty, this value can be […]
To sleep in your shell script in units of 1 second – sleep will see you right. However what if you want to sleep for less than one second, say for 200ms? On some newer system you can do something like this and everything is fine: sleep .2 However when I try this on my […]
If you’re receiving errors like the following when trying to build a project in Visual Studio 2017 using the Paho C client: Error C2238 unexpected token(s) preceding ‘;’ Then there is a quick fix, the problem seems to revolve around the following for DLLImport & DLLExport in the Paho header files: #if defined(WIN32) || defined(WIN64) […]
The point cloud library (PCL) is a fantastic resource for working with point clouds, however it is a large library and it can take a while to effectively find your way around it. The octree construct is very useful for working with point clouds, but again it can take a while to learn how to […]
If you get this compile error: Error C2988 unrecognizable template declaration/definition When you: #include from the Point Cloud Library (PCL) in Visual Studio 2017, then either throw the following in before the #include, like this: // #define BOOST_TYPEOF_EMULATION #include or upgrade your version of Visual Studio 2017 (I haven’t tested this yet myself!) Not sure […]
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- Flutter on Web does not support HTTP streaming (e.g. no support for MJPEG streaming)
- C++ toolkit for analyzing GPS path data – distance, speed, heading etc.
- Pylon EnumerateDevices() not finding Basler GigE cameras
- Code to calculate heading / bearing from two GPS latitude and longitude Points
- Code Example: Convert Decimal Degrees and Minutes (DDM) to Decimal Degrees (DD)
- Simple Wrapper of boost::asio for receiving UDP datagrams
- mktime() always uses local time zone and converts from UTC
- Estimate Solar Azimuth and Elevation given GPS position and time.