Book Image

Rapid BeagleBoard Prototyping with MATLAB and Simulink

Book Image

Rapid BeagleBoard Prototyping with MATLAB and Simulink

Overview of this book

As an open source embedded single-board computer with many standard interfaces, Beagleboard is ideal for building embedded audio/video systems to realize your practical ideas. The challenge is how to design and implement a good digital processing algorithm on Beagleboard quickly and easily without intensive low-level coding. Rapid BeagleBoard Prototyping with MATLAB and Simulink is a practical, hands-on guide providing you with a number of clear, step-by-step exercises which will help you take advantage of the power of Beagleboard and give you a good grounding in rapid prototyping techniques for your audio/video applications. Rapid BeagleBoard Prototyping with MATLAB and Simulink looks at rapid prototyping and how to apply these techniques to your audio/video applications with Beagleboard quickly and painlessly without intensive manual low-level coding. It will take you through a number of clear, practical recipes that will help you to take advantage of both the Beagleboard hardware platform and Matlab/Simulink signal processing. We will also take a look at building S-function blocks that work as hardware drivers and interfaces for Matlab/Simulink. This gives you more freedom to explore the full range of advantages provided by Beagleboard. By the end of this book, you will have a clear idea about Beagleboard and Matlab/Simulink rapid prototyping as well as how to develop voice recognition systems, motion detection systems with I/O access, and serial communication for your own applications such as a smart home.
Table of Contents (15 chapters)
Rapid BeagleBoard Prototyping with MATLAB and Simulink
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Parameter optimization


As we discussed earlier in this chapter, the effect and accuracy of the three-frame difference algorithm are highly correlated with the parameter chosen. Theoretically, we can analyze the optimized parameter for a given system. However, in real-life system design, the best configuration of a system parameter is more or less an experience value. Therefore, in the prototype design process, we usually have to frequently adjust the parameter and check the output to find the best solution.

In this system, there are two parameters closely related to system performance. The first is the delay length of three frames, and the second is the threshold value to convert a frame into a binary image. The threshold is already a parameter input configured with a Constant block. Here we set the delay length of the Delay block with a configurable input port as well. You can simply double-click on the Delay block and set the source of delay length into the input port, and then drag another...