Java Image Processing Recipes : With OpenCV and JVM

Quickly obtain solutions to common Java image processing problems, learn best practices, and understand everything OpenCV has to offer for image processing. You will work with a JVM image wrapper to make it very easy to run image transformation through pipelines and obtain instant visual feedback. This book makes heavy use of the Gorilla environment where code can be executed directly in the browser, and image transformation results can also be visualized directly in the browser.__Java Image Processing Recipes__ includes recipes on more advanced image manipulation techniques, such as image smoothing, cartooning, sketching, and mastering masks to apply changes only to parts of the image. You’ll see how OpenCV features provide instant solutions to problems such as edges detection and shape finding. Finally, the book contains practical recipes dealing with webcams and various video streams, giving you ready-made code with which to do real-time video analysis. **What You Will Learn** * Create your personal real-time image manipulation environment * Manipulate image characteristics with OpenCV * Work with the Origami image wrapper * Apply manipulations to webcams and video streams **Who This Book Is For**Developers that want to manipulate images and use other advanced imaging techniques, through code running in the JVM. Table of Contents About the Author About the Technical Reviewer Acknowledgments Introduction Chapter 1: OpenCV on€the€JavaVM 1-1 Getting Started with€Leiningen Problem Solution How it works Installing Leiningen Creating a€New OpenCV-Ready Java Project with€Leiningen 1-2 Writing Your First OpenCV Java Program Problem Solution How it works 1-3 Automatically Compiling and€Running Code Problem Solution How it works 1-4 Using a€Better Text Editor Problem Solution How it works 1-5 Learning the€Basics of€ the€OpenCV Mat Object Problem Solution How it works 1-6 Loading Images from€a€File Problem Solution How it works 1-7 Saving Images into a€File Problem Solution How it works 1-8 Cropping a€Picture with€Submat Problem Solution How it works 1-9 Creating a€Mat from€Submats Problem Solution How it works Mat of€Colored Submats Mat of€Picture Submats 1-10 Highlighting Objects in€a€Picture Problem Solution How it works 1-11 Using a€Canny Result as€a€Mask Problem Solutions How it works 1-12 Detecting Edges with€Contours Problem Solution How it works 1-13 Working with€Video Streams Problem Solution How it works Taking Still Pictures Working in€Real Time 1-14 Writing OpenCV Code in€Scala Problem Solution How it works Basic Setup Blurred Canny Effect 1-15 Writing OpenCV Code in€Kotlin Problems Solutions How it works Basic Setup Color Mapping User Interface Kotlin Setup UI for€Dummies UI with€Reactive Buttons Blurring Application Chapter 2: OpenCV with€Origami 2-1 Starting to€Code with€Origami Problem Solution How it works Project Setup with€a€Leiningen Template Everything Is OK Webcam Check The Auto Plug-in Strikes Back At the€REPL REPL from Atom Gorilla Notebook 2-2 Working with€Mats Problem Solution How it works Creating a€Mat Creating a€Colored Mat Using a€Submat Setting One Pixel Color Piping Process and€Some Generative Art 2-3 Loading, Showing, Saving Mats Problem Solution How it works Loading Saving Showing Loading from€URL 2-4 Working with€Colors, ColorMaps, and€ColorSpaces Problem Solution How it works Simple Colors Color Maps Color Space 2-5 Rotating and€Transforming Mats Problem Solution How it works Flipping Rotation Warp 2-6 Filtering Mats Problem Solution How it works Manual Filter Multiply Luminosity Highlight Filter 2d Threshold 2-7 Applying Simple Masking Techniques Problem Solution How it works 2-8 Blurring Images Problem Solution How it works Simple Blur and€Median Blur Gaussian Blur Bilateral Filter Median Blur Chapter 3: Imaging Techniques 3-1 Playing with€Colors Problem Solution How it works Applying Threshold on€a€Colored Mat Channels by Hand Transform Artful Transformations 3-2 Creating Cartoons Problem Solution How it works Bilateral Cartoon Grayed with€Update Channel 3-3 Creating Pencil Sketches Problem Solution How it works Background Foreground and€Result Summary 3-4 Creating a€Canvas Effect Problem Solution How it works Apply the€Canvas 3-5 Highlighting Lines and€Circles Problem Solution How it works Find Lines of€a€Tennis Court with€Hough-Lines Hough-Lines-P Finding Pockets on€a€Pool Table Finding Circles Using Draw Segment 3-6 Finding and€Drawing Contours and€Bounding Boxes Problem Solution How it works Sony Headphones Up in€the€Sky 3-7 More on€Contours: Playing with€Shapes Problem Solution How it works Highlight Contours Hand-Drawn Shapes 3-8 Moving Shapes Problem Solution How it works 3-9 Looking at Trees Problem Solution How it works 3-10 Detecting Blur Problem Solution How it works 3-11 Making Photomosaics Problem Solution How it works Chapter 4: Real-Time Video 4-1 Getting Started with€Video Streaming Problem Solution How it works Do-It-Yourself Video Stream One-Function Webcam Transformation Function Two Frames, or More, from€the€Same Input Source 4-2 Combining Multiple Video Streams Problem Solution How it works 4-3 Warping Video Problem Solution How it works 4-4 Using Face Recognition Problem Solution How it works 4-5 Diffing with€a€Base Image Problem Solution How it works 4-6 Finding Movement Problem Solution How it works Finding Movement in€Black and€White Find and€Draw Contours 4-7 Separating the€Foreground from€the€Background Using Grabcut Problem Solution How it works On a€Still Image On a€Video Stream 4-8 Finding an€Orange in€Real Time Problem Solution How it works Using Hough-Circles Using Find-Contours 4-9 Finding an€Image Within€the€Video Stream Problem Solution How it works Still Image Video Stream Index Quickly obtain solutions to common Java image processing problems, learn best practices, and understand everything OpenCV has to offer for image processing. You will work with a JVM image wrapper to make it very easy to run image transformation through pipelines and obtain instant visual feedback. This book makes heavy use of the Gorilla environment where code can be executed directly in the browser, and image transformation results can also be visualized directly in the browser. Java Image Processing Recipes includes recipes on more advanced image manipulation techniques, such as image smoothing, cartooning, sketching, and mastering masks to apply changes only to parts of the image. You'll see how OpenCV features provide instant solutions to problems such as edges detection and shape finding. Finally, the book contains practical recipes dealing with webcams and various video streams, giving you ready-made code with which to do real-time video analysis. What You Will Learn Create your personal real-time image manipulation environment Manipulate image characteristics with OpenCV Work with the Origami image wrapper Apply manipulations to webcams and video streams Who This Book Is For Developers that want to manipulate images and use other advanced imaging techniques, through code running in the JVM. Through simple and short code samples, this book will help you to quickly obtain solutions to common Java image processing problems, learn best practices, and understand everything OpenCV has to offer for image processing. -- Edited summary from book