How to Access Android Camera Using Qt/C++

In this article I am going to describe the required steps needed for accessing Android Camera (or Default Camera Interface) using Qt. Unfortunately OpenCV does not provide a reliable way of connecting to Camera in Android so you have go for a method like this if you intend to write an Android application which uses OpenCV and Qt together. I strongly recommend that you should first read this article (which describes how to access Android Gallery from Qt) and also this article (which shows how to mix Java and C++ code in Qt) and then return here because I will be assuming that you are familiar with those processes. So if you can already access Android Gallery using Qt then continue reading the steps described below.

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How to Build OpenCV 2.4.13 Static/Dynamic with MSVC2010

OpenCV 2.4.13 was released just a few days ago and as a tradition I had to check if a static build with Microsoft Visual C++ 2010 (MSVC2010) 32-bit produced any errors or not. Fortunately, everything went quite smoothly (except a few common warnings here and there) and I was able to successfully build it so if you need to build the latest OpenCV release statically using MSVC2010 you can follow the steps below:

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Cardiograph v1.0 Released!

Today I released the first version of Cardiograph program. It is a program that allows you to measure (monitor) your heart rate using your computer’s webcam. It is designed to be simple and accurate. Currently only Windows is supported but hopefully more operating systems will be supported in the future.

Cardiograph

Head to Cardiograph Official Page to download and try it for yourself.





Below are screenshots of Cardiograph in action:

Let me know if you face any issues.

QRecorder, Screen Recorder for Windows

QRecorder (version 1.0.1) is a new application I wrote for screen recording. Record your desktop activities with this simple tool. It requires no configurations and it’s easy to use. It supports all windows versions from the good old XP to the recent Windows 10. You can record part or whole of the screen. You can make QRecorder totally invisible while recording. Well, head to download page and test it for yourself. Click on the icon below to be taken to QRecorder official webpage.

QRecorder
QRecorder v1.0.1 for Windows

Credits

This application uses Qt Framework, OpenCV Library and icons from Freepik. All of them are credited in detail inside QRecorder. This free application is sponsored by ToTRVL.com.





Image Filtering Using Fourier Transform

In Machine Vision there is a magical trick that involves Fourier transformation of an image and I would like to share it with you today. I learned this long ago from a professor of mine but I remember back then there was not much experience and information about this on the web. Also there was no program that allowed experimenting with Fourier transformation of Images, until I developed an Android application titled Image Transformer, using OpenCV and Qt, which allows you to do just that.

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