Book Image

Visual Media Processing Using MATLAB Beginner's Guide

By : George Siogkas
Book Image

Visual Media Processing Using MATLAB Beginner's Guide

By: George Siogkas

Overview of this book

Whether you want to enhance your holiday photographs or make a professional banner image for your website, you need a software tool that offers you quick and easy ways to accomplish it. All-in-one tools tend to be rare, and Matlab is one of the best available.This book is a practical guide full of step-by-step examples and exercises that will enable you to use Matlab as a powerful, complete, and versatile alternative to traditional image and video processing software.You will start off by learning the very basics of grayscale image manipulation in Matlab to master how to analyze 3-dimensional images and videos using the same tool. The methods you learn here are explained and expanded upon so that you gradually reach a more advanced level in Matlab image and video processing. You will be guided through the steps of opening, transforming, and saving images, later to be mixed with advanced masking techniques both in grayscale and in color. More advanced examples of artistic image processing are also provided, like creating panoramic photographs or HDR images. The second part of the book covers video processing techniques and guides you through the processes of creating time-lapse videos from still images, and acquiring, filtering, and saving videos in Matlab. You will learn how to use many useful functions and tools that transform Matlab from a scientific software to a powerful and complete solution for your everyday image and video processing needs.
Table of Contents (18 chapters)
Visual Media Processing Using MATLAB Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

The importance of mixing or combining images


An obvious question for a beginner in the field of image processing, would be about what the importance of mixing images is. The answer is that the basic idea behind mixing or combining images is to enrich them and achieve the following results:

  • Enhance the information included in multimodal images, that is, images acquired from different sensors or scanners, to detect regions of interest. This is a technique often used in medical imaging applications, such as brain CT/MRI images or body PET/CT images.

  • See more than the eye can see, by combining images of the same subject, taken at different frequencies of the electromagnetic spectrum. This is a way to extract information that is not normally visible to humans, such as for example, infrared wavelengths.

  • Blend two or more images together to end up with an artistic result.

  • Combine images of the same subject taken using different exposure levels, to end up with a resulting image with a higher dynamic...