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‎.classpath‎

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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" path="src"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
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<classpathentry kind="con" path="org.eclipse.fx.ide.jdt.core.JAVAFX_CONTAINER"/>
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<classpathentry kind="con" path="org.eclipse.jdt.USER_LIBRARY/opencv2"/>
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<classpathentry kind="output" path="bin"/>
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</classpath>

‎.gitignore‎

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/bin

‎.project‎

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>Lab7</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.xtext.ui.shared.xtextBuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.xtext.ui.shared.xtextNature</nature>
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<nature>org.eclipse.jdt.core.javanature</nature>
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</natures>
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</projectDescription>

‎.settings/org.eclipse.jdt.core.prefs‎

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eclipse.preferences.version=1
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org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
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org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
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org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
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org.eclipse.jdt.core.compiler.compliance=1.7
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org.eclipse.jdt.core.compiler.debug.lineNumber=generate
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org.eclipse.jdt.core.compiler.debug.localVariable=generate
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org.eclipse.jdt.core.compiler.debug.sourceFile=generate
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org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
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org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
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org.eclipse.jdt.core.compiler.source=1.7

‎README.md‎

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## Object Recognition with OpenCV and JavaFX
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*Computer Vision course - [Politecnico di Torino](http://www.polito.it) - academic year 2014-2015*
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A project, made in Eclipse (Luna), for identify and track one or more tennis balls. It performs the detection of the tennis balls upon a webcam video stream by using the color range of the balls, erosion and dilation, and the `findContours` method. Some screenshots of the running project are available in the `screenshots` folder.
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Please, note that the project is an Eclipse project, made for teaching purposes. Before using it, you need to install the OpenCV library (version 2.4.9) and JavaFX (version 2 or superior) and create a `User Library` named `opencv2` that links to the OpenCV jar and native libraries.

‎build.fxbuild‎

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<?xml version="1.0" encoding="ASCII"?>
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<anttasks:AntTask xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:anttasks="http://org.eclipse.fx.ide.jdt/1.0" buildDirectory="${project}/build">
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<deploy>
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<application name="Lab6"/>
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<info/>
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</deploy>
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<signjar/>
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</anttasks:AntTask>

‎screenshots/one-tennis-ball.png‎

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‎screenshots/two-tennis-balls.png‎

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‎src/it/polito/teaching/cv/Lab7.java‎

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package it.polito.teaching.cv;
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import org.opencv.core.Core;
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import javafx.application.Application;
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import javafx.stage.Stage;
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import javafx.scene.Scene;
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import javafx.scene.layout.BorderPane;
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import javafx.fxml.FXMLLoader;
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public class Lab7 extends Application
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{
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/**
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* The main class for a JavaFX application. It creates and handles the main
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* window with its resources (style, graphics, etc.).
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*
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* This application looks for any tennis ball in the camera video stream and
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* try to select them according to their HSV values. Found tennis balls are
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* framed with a blue line.
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*
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* @author <a href="mailto:luigi.derussis@polito.it">Luigi De Russis</a>
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* @since 2015-01-13
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*
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*/
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@Override
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public void start(Stage primaryStage)
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{
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try
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{
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// load the FXML resource
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BorderPane root = (BorderPane) FXMLLoader.load(getClass().getResource("ObjRecognition.fxml"));
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// set a whitesmoke background
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root.setStyle("-fx-background-color: whitesmoke;");
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// create and style a scene
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Scene scene = new Scene(root, 800, 600);
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scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
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// create the stage with the given title and the previously created
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// scene
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primaryStage.setTitle("Lab7");
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primaryStage.setScene(scene);
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// show the GUI
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primaryStage.show();
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}
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catch (Exception e)
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{
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e.printStackTrace();
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}
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}
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public static void main(String[] args)
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{
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// load the native OpenCV library
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System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
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launch(args);
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}
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}

‎src/it/polito/teaching/cv/ObjRecognition.fxml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<?import javafx.geometry.*?>
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<?import javafx.scene.control.*?>
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<?import javafx.scene.layout.*?>
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<?import javafx.scene.image.*?>
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<?import javafx.scene.text.*?>
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<BorderPane xmlns:fx="http://javafx.com/fxml" fx:controller="it.polito.teaching.cv.ObjRecognitionController">
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<right>
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<VBox alignment="CENTER" spacing="10">
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<padding>
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<Insets right="10" left="10" />
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</padding>
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<Label text="Hue Start" />
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<Slider fx:id="hueStart" min="0" max="180" value="20" blockIncrement="1" />
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<Label text="Hue Stop" />
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<Slider fx:id="hueStop" min="0" max="180" value="50" blockIncrement="1" />
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<Label text="Saturation Start" />
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<Slider fx:id="saturationStart" min="0" max="255" value="60" blockIncrement="1" />
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<Label text="Saturation Stop" />
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<Slider fx:id="saturationStop" min="0" max="255" value="200" blockIncrement="1" />
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<Label text="Value Start" />
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<Slider fx:id="valueStart" min="0" max="255" value="50" blockIncrement="1" />
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<Label text="Value Stop" />
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<Slider fx:id="valueStop" min="0" max="255" value="255" blockIncrement="1" />
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</VBox>
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</right>
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<center>
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<HBox alignment="CENTER" spacing="5">
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<padding>
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<Insets right="10" left="10" />
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</padding>
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<ImageView fx:id="originalFrame" />
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<VBox alignment="CENTER" spacing="5">
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<ImageView fx:id="maskImage" />
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<ImageView fx:id="morphImage" />
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</VBox>
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</HBox>
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</center>
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<bottom>
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<VBox alignment="CENTER" spacing="15">
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<padding>
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<Insets top="25" right="25" bottom="25" left="25" />
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</padding>
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<Button fx:id="cameraButton" alignment="center" text="Start camera" onAction="#startCamera" />
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<Separator />
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<Label fx:id="hsvCurrentValues" />
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</VBox>
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</bottom>
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</BorderPane>

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