O'Reilly logo

OpenCV Essentials by Jesus Salido Tercero, Julio Alberto Patón Incertis, Ismael Serrano Gracia, Gloria Bueno García, Noelia Vállez Enano, Mª del Milagro Fernández Carrobles, Oscar Deniz Suarez

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Using Qt-based functions

While highgui will be sufficient for most purposes, the Qt UI framework (available at http://qt-project.org/) can be leveraged in OpenCV to develop richer user interfaces. A number of OpenCV's user interface functions use the Qt library behind the scenes. In order to use these functions, OpenCV must have been compiled with the WITH_QT option.

Note that Qt is a class and widget library that allows the creation of full-fledged applications with rich, event-driven user interfaces. In this section, however, we will mainly focus on specific Qt-based functions within OpenCV. Programming with Qt is out of the scope of this book.

With Qt support on, windows created with the namedWindow function will automatically look like what ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required