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

Time for action – cloning the seagull


In this example, we will demonstrate how we can perform image blending without actually preprocessing the two input images. Let's start:

  1. As always, our first step is to import the two images in MATLAB. As already mentioned, we will use the two images that do not need preprocessing, named seagull1.jpg and seagull2.jpg:

    >> A = imread('seagull1.jpg');
    >> B = imread('seagull2.jpg');
  2. Now that we have loaded our images, we can display them next to each other, to see if they fit our purpose:

    >> figure,imshowpair(A,B,'montage');
  3. It is apparent that the images are quite suitable for our purposes. They have almost identical backgrounds and the seagull is at a different part of the image in each picture. So, we can give it a go, by asking MATLAB to blend the two images:

    >> imshowpair(A,B,'blend');
  4. Let's now say that we want to achieve a more psychedelic result, with pseudo colored elements. Well, I have good news for you! MATLAB provides this without...