Thou shalt programme
Below is the list of supported image formats in OpenCV. You should note that if you build OpenCV yourself you have the option to remove support for some of the types but out of the box OpenCV supports the following:
First of all I assume you have seen this post which describes how to build opencv statically for Linux. If that is the case then you can just add the following code to your qmake .PRO file to use opencv with Qt.
unix: {
CONFIG += link_pkgconfig
PKGCONFIG += opencv
}
This post describes how to build an static version of OpenCV for Linux operating systems. I am going to use OpenCV version 3.1.0 and Ubuntu 16.04 64-bit but the process should be more or less the same under CentOS or other flavors of Linux. So let’s start.
Continue reading “Build OpenCV Statically for Linux”
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:
Continue reading “How to Build OpenCV 2.4.13 Static/Dynamic with MSVC2010”
In this post I am going to share a very simple but crucial parts of my QRecorder program which is recording images into videos. At the time of writing this article, Qt doesn’t allow recording of video files and OpenCV with its multi-platform support seems to be the best solution.
Continue reading “How to Record Videos Using OpenCV”
You can use OpenCV to easily and quickly apply a Sepia filter to your images, as seen in these pictures. Here is how:
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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.
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 (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.
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.
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.
OpenCV 3.1 was released yesterday and with a first look I noticed that prebuilt libraries for x86 VC10 (MSVC2010) are nowhere to be found in the installation folder. In fact there is no x86 folder to begin with. Some of my recent apps all are built using MSVC2010 so I had to build OpenCV myself. Here is what I did and what I suggest you should do.
Continue reading “How to Build OpenCV 3.1 with MSVC2010 for x86”