Book Image

Mastering openFrameworks: Creative Coding Demystified

By : Denis Perevalov
Book Image

Mastering openFrameworks: Creative Coding Demystified

By: Denis Perevalov

Overview of this book

openFrameworks is a powerful programming toolkit and library designed to assist the creative process through simplicity and intuitiveness. It's a very handy software library written in C++ to reduce the software development process, helping you to kick-start creative coding. With the help of C++ and shaders support, openFrameworks allows for the processing of all kinds of media information with your custom-developed algorithms at the lowest possible level, with the fastest speed. "Mastering openFrameworks: Creative Coding Demystified" will introduce you to a world of creative coding projects, including interactive installations, audio-visual, and sound art projects. You will learn how to make your own projects using openFrameworks. This book focuses on low-level data processing, which allows you to create really unique and cutting-edge installations and projects. "Mastering openFrameworks: Creative Coding Demystified" provides a complete introduction to openFrameworks, including installation, core capabilities, and addons. Advanced topics like shaders, computer vision, and depth cameras are also covered. We start off by discussing the basic topics such as image and video loading, rendering and processing, playing sound samples, and synthesizing new sounds. We then move on to cover 3D graphics, computer vision, and depth cameras. You will also learn a number of advanced topics such as video mapping, interactive floors and walls, video morphing, networking, and using geometry shaders. You will learn everything you need to know in order to create your own projects; create projects of all levels, ranging from simple creative-code experiments, to big interactive systems consisting of a number of computers, depth cameras, and projectors.
Table of Contents (22 chapters)
Mastering openFrameworks: Creative Coding Demystified
About the Author
About the Reviewers

Processing a live video from the camera

External and built-in webcams are the sources of live video. There are several cases of using this capability:

  • Transform input frames and show it on the screen. You then get a kind of "magic mirror" interactive project.

  • Add some objects over live video. In this way, you obtain a kind of Augmented Reality (AR) application with 3D or cartoon objects added over video.

  • Analyze human silhouette and gestures, find human faces, and perform some action based on this knowledge. For example, it can be the cartoon character repeating your mimics, or gesture-based drawing interactive installation.

It is enough to use video processing methods described in the preceding sections for creating simple art and interactive projects. For more advanced processing, there is a need to use deeper image analyzing techniques, which will be considered in Chapter 9, Computer Vision with OpenCV.

Now we will consider how to capture live video using openFrameworks. It can be done with...