Thou shalt programme
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.
You can use OpenCV to easily and quickly apply a Sepia filter to your images, as seen in these pictures. Here is how:
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. …
Continue reading “How to Build OpenCV 3.1 with MSVC2010 for x86”
OpenCV 2.4.11 users may have noticed that it does not provide pre-built binaries (Libs and DLLs) for VC14 (Visual Studio 2015) Unfortunately it is also the case with Qt 5.5.1 (At least it’s true at the time of writing this article) so if you are going to use either one of them you have to build …
I start Qt for Android projects all the time and setting up all the required folders and including libraries can take some time, assuming that I don’t make any mistakes during the initialization of the project. Previously I had posted this about how to add OpenCV libraries to your Qt for Android project but it proved to …
Continue reading “Download Template Project – Qt for Android (with OpenCV)”
Following video demonstrates the application in my previous post about Multiple Object Tracking while it is tracking 3 different objects. You can find the post using the link below: http://amin-ahmadi.com/2015/10/20/camshift-multiple-trackers-application-and-source-code/ https://www.youtube.com/watch?v=-Yy_GA-7SNM
This program allows you to benchmark algorithms in OpenCV related to object detection using key points. It allows you to set all the required parameters using a simple interface and search for an object in a scene and view the results. This program is written in C++ using Qt and it uses OpenCV libraries. Please …
Continue reading “OpenCV Feature Points Comparison Program (Executable + Source Code)”
Following is the slightly modified version of the example for “Introduction to Support Vector Machines” that is working with OpenCV v.3.0.0 (Current version on OpenCV website only works with version 2.4.X) I assume that you have installed OpenCV 3.0.0 on your computer successfully and you know how to add library references etc. If you have …
Continue reading “Introduction to Support Vector Machines OpenCV 3.0.0 Example (Working version)”
Another note to myself which I hope will be useful for others searching it. Add the following lines to your PRO file in Qt, or create a PRI file using the following and include that in your PRO file.
Update on March 18th, 2018: Now you can use this post for a more recent, accurate and complete guide on adding OpenCV to Qt projects. Use the following lines in a .pri file that is added to your project by using “include(C:/opencv/opencv.pri)”. This allows easy including of headers and library references in a Qt project. …
Continue reading “Required Includes and Libraries for OpenCV in Qt”