392 lines
14 KiB
C#
392 lines
14 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.SceneManagement;
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using System.Collections;
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using System.Collections.Generic;
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using OpenCVForUnity.CoreModule;
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using OpenCVForUnity.ImgprocModule;
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using OpenCVForUnity.VideoModule;
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using OpenCVForUnity.UnityUtils;
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using OpenCVForUnity.UnityUtils.Helper;
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namespace OpenCVForUnityExample
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{
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/// <summary>
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/// CamShift Example
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/// An example of object tracking using the Video.Camshift function.
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/// Referring to http://www.computervisiononline.com/blog/tutorial-using-camshift-track-objects-video.
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/// http://docs.opencv.org/3.2.0/db/df8/tutorial_py_meanshift.html
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/// </summary>
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[RequireComponent(typeof(WebCamTextureToMatHelper))]
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public class CamShiftExample : MonoBehaviour
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{
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/// <summary>
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/// The texture.
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/// </summary>
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Texture2D texture;
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/// <summary>
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/// The roi point list.
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/// </summary>
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List<Point> roiPointList;
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/// <summary>
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/// The roi rect.
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/// </summary>
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OpenCVForUnity.CoreModule.Rect roiRect;
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/// <summary>
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/// The hsv mat.
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/// </summary>
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Mat hsvMat;
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/// <summary>
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/// The roi hist mat.
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/// </summary>
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Mat roiHistMat;
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/// <summary>
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/// The termination.
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/// </summary>
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TermCriteria termination;
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/// <summary>
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/// The webcam texture to mat helper.
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/// </summary>
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WebCamTextureToMatHelper webCamTextureToMatHelper;
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/// <summary>
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/// The stored touch point.
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/// </summary>
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Point storedTouchPoint;
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/// <summary>
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/// The flag for requesting the start of the CamShift Method.
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/// </summary>
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bool shouldStartCamShift = false;
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/// <summary>
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/// The FPS monitor.
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/// </summary>
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FpsMonitor fpsMonitor;
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// Use this for initialization
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void Start()
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{
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fpsMonitor = GetComponent<FpsMonitor>();
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roiPointList = new List<Point>();
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termination = new TermCriteria(TermCriteria.EPS | TermCriteria.COUNT, 10, 1);
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webCamTextureToMatHelper = gameObject.GetComponent<WebCamTextureToMatHelper>();
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#if UNITY_ANDROID && !UNITY_EDITOR
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// Avoids the front camera low light issue that occurs in only some Android devices (e.g. Google Pixel, Pixel2).
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webCamTextureToMatHelper.avoidAndroidFrontCameraLowLightIssue = true;
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#endif
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webCamTextureToMatHelper.Initialize();
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}
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/// <summary>
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/// Raises the webcam texture to mat helper initialized event.
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/// </summary>
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public void OnWebCamTextureToMatHelperInitialized()
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{
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Debug.Log("OnWebCamTextureToMatHelperInitialized");
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Mat webCamTextureMat = webCamTextureToMatHelper.GetMat();
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texture = new Texture2D(webCamTextureMat.cols(), webCamTextureMat.rows(), TextureFormat.RGBA32, false);
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Utils.matToTexture2D(webCamTextureMat, texture);
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gameObject.GetComponent<Renderer>().material.mainTexture = texture;
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gameObject.transform.localScale = new Vector3(webCamTextureMat.cols(), webCamTextureMat.rows(), 1);
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Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
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if (fpsMonitor != null)
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{
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fpsMonitor.Add("width", webCamTextureMat.width().ToString());
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fpsMonitor.Add("height", webCamTextureMat.height().ToString());
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fpsMonitor.Add("orientation", Screen.orientation.ToString());
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}
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if (fpsMonitor != null)
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{
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fpsMonitor.consoleText = "Please touch the 4 points surrounding the tracking object.";
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}
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float width = webCamTextureMat.width();
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float height = webCamTextureMat.height();
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float widthScale = (float)Screen.width / width;
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float heightScale = (float)Screen.height / height;
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if (widthScale < heightScale)
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{
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Camera.main.orthographicSize = (width * (float)Screen.height / (float)Screen.width) / 2;
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}
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else
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{
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Camera.main.orthographicSize = height / 2;
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}
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hsvMat = new Mat(webCamTextureMat.rows(), webCamTextureMat.cols(), CvType.CV_8UC3);
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}
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/// <summary>
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/// Raises the webcam texture to mat helper disposed event.
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/// </summary>
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public void OnWebCamTextureToMatHelperDisposed()
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{
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Debug.Log("OnWebCamTextureToMatHelperDisposed");
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hsvMat.Dispose();
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if (roiHistMat != null)
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roiHistMat.Dispose();
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roiPointList.Clear();
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if (texture != null)
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{
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Texture2D.Destroy(texture);
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texture = null;
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}
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}
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/// <summary>
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/// Raises the webcam texture to mat helper error occurred event.
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/// </summary>
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/// <param name="errorCode">Error code.</param>
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public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
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{
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Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
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}
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// Update is called once per frame
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void Update()
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{
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#if ((UNITY_ANDROID || UNITY_IOS) && !UNITY_EDITOR)
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//Touch
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int touchCount = Input.touchCount;
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if (touchCount == 1)
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{
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Touch t = Input.GetTouch(0);
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if(t.phase == TouchPhase.Ended && !EventSystem.current.IsPointerOverGameObject (t.fingerId)) {
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storedTouchPoint = new Point (t.position.x, t.position.y);
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//Debug.Log ("touch X " + t.position.x);
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//Debug.Log ("touch Y " + t.position.y);
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}
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}
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#else
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//Mouse
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if (Input.GetMouseButtonUp(0) && !EventSystem.current.IsPointerOverGameObject())
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{
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storedTouchPoint = new Point(Input.mousePosition.x, Input.mousePosition.y);
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//Debug.Log ("mouse X " + Input.mousePosition.x);
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//Debug.Log ("mouse Y " + Input.mousePosition.y);
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}
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#endif
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if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
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{
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Mat rgbaMat = webCamTextureToMatHelper.GetMat();
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Imgproc.cvtColor(rgbaMat, hsvMat, Imgproc.COLOR_RGBA2RGB);
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Imgproc.cvtColor(hsvMat, hsvMat, Imgproc.COLOR_RGB2HSV);
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if (storedTouchPoint != null)
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{
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ConvertScreenPointToTexturePoint(storedTouchPoint, storedTouchPoint, gameObject, rgbaMat.cols(), rgbaMat.rows());
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OnTouch(rgbaMat, storedTouchPoint);
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storedTouchPoint = null;
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}
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Point[] points = roiPointList.ToArray();
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if (shouldStartCamShift)
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{
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shouldStartCamShift = false;
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using (MatOfPoint roiPointMat = new MatOfPoint(points))
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{
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roiRect = Imgproc.boundingRect(roiPointMat);
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}
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if (roiHistMat != null)
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{
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roiHistMat.Dispose();
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roiHistMat = null;
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}
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roiHistMat = new Mat();
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using (Mat roiHSVMat = new Mat(hsvMat, roiRect))
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using (Mat maskMat = new Mat())
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{
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Imgproc.calcHist(new List<Mat>(new Mat[] { roiHSVMat }), new MatOfInt(0), maskMat, roiHistMat, new MatOfInt(16), new MatOfFloat(0, 180));
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Core.normalize(roiHistMat, roiHistMat, 0, 255, Core.NORM_MINMAX);
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//Debug.Log ("roiHist " + roiHistMat.ToString ());
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}
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}
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else if (points.Length == 4)
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{
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using (Mat backProj = new Mat())
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{
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Imgproc.calcBackProject(new List<Mat>(new Mat[] { hsvMat }), new MatOfInt(0), roiHistMat, backProj, new MatOfFloat(0, 180), 1.0);
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RotatedRect r = Video.CamShift(backProj, roiRect, termination);
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r.points(points);
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}
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}
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if (points.Length < 4)
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{
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for (int i = 0; i < points.Length; i++)
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{
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Imgproc.circle(rgbaMat, points[i], 6, new Scalar(0, 0, 255, 255), 2);
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}
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}
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else
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{
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for (int i = 0; i < 4; i++)
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{
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Imgproc.line(rgbaMat, points[i], points[(i + 1) % 4], new Scalar(255, 0, 0, 255), 2);
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}
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Imgproc.rectangle(rgbaMat, roiRect.tl(), roiRect.br(), new Scalar(0, 255, 0, 255), 2);
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}
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//Imgproc.putText (rgbaMat, "W:" + rgbaMat.width () + " H:" + rgbaMat.height () + " SO:" + Screen.orientation, new Point (5, rgbaMat.rows () - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
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Utils.matToTexture2D(rgbaMat, texture);
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}
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}
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private void OnTouch(Mat img, Point touchPoint)
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{
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if (roiPointList.Count == 4)
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{
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roiPointList.Clear();
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}
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if (roiPointList.Count < 4)
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{
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roiPointList.Add(touchPoint);
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if (!(new OpenCVForUnity.CoreModule.Rect(0, 0, img.width(), img.height()).contains(roiPointList[roiPointList.Count - 1])))
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{
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roiPointList.RemoveAt(roiPointList.Count - 1);
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}
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if (roiPointList.Count == 4)
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{
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shouldStartCamShift = true;
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}
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}
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}
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/// <summary>
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/// Converts the screen point to texture point.
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/// </summary>
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/// <param name="screenPoint">Screen point.</param>
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/// <param name="dstPoint">Dst point.</param>
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/// <param name="texturQuad">Texture quad.</param>
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/// <param name="textureWidth">Texture width.</param>
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/// <param name="textureHeight">Texture height.</param>
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/// <param name="camera">Camera.</param>
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private void ConvertScreenPointToTexturePoint(Point screenPoint, Point dstPoint, GameObject textureQuad, int textureWidth = -1, int textureHeight = -1, Camera camera = null)
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{
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if (textureWidth < 0 || textureHeight < 0)
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{
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Renderer r = textureQuad.GetComponent<Renderer>();
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if (r != null && r.material != null && r.material.mainTexture != null)
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{
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textureWidth = r.material.mainTexture.width;
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textureHeight = r.material.mainTexture.height;
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}
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else
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{
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textureWidth = (int)textureQuad.transform.localScale.x;
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textureHeight = (int)textureQuad.transform.localScale.y;
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}
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}
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if (camera == null)
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camera = Camera.main;
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Vector3 quadPosition = textureQuad.transform.localPosition;
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Vector3 quadScale = textureQuad.transform.localScale;
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Vector2 tl = camera.WorldToScreenPoint(new Vector3(quadPosition.x - quadScale.x / 2, quadPosition.y + quadScale.y / 2, quadPosition.z));
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Vector2 tr = camera.WorldToScreenPoint(new Vector3(quadPosition.x + quadScale.x / 2, quadPosition.y + quadScale.y / 2, quadPosition.z));
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Vector2 br = camera.WorldToScreenPoint(new Vector3(quadPosition.x + quadScale.x / 2, quadPosition.y - quadScale.y / 2, quadPosition.z));
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Vector2 bl = camera.WorldToScreenPoint(new Vector3(quadPosition.x - quadScale.x / 2, quadPosition.y - quadScale.y / 2, quadPosition.z));
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using (Mat srcRectMat = new Mat(4, 1, CvType.CV_32FC2))
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using (Mat dstRectMat = new Mat(4, 1, CvType.CV_32FC2))
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{
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srcRectMat.put(0, 0, tl.x, tl.y, tr.x, tr.y, br.x, br.y, bl.x, bl.y);
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dstRectMat.put(0, 0, 0, 0, quadScale.x, 0, quadScale.x, quadScale.y, 0, quadScale.y);
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using (Mat perspectiveTransform = Imgproc.getPerspectiveTransform(srcRectMat, dstRectMat))
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using (MatOfPoint2f srcPointMat = new MatOfPoint2f(screenPoint))
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using (MatOfPoint2f dstPointMat = new MatOfPoint2f())
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{
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Core.perspectiveTransform(srcPointMat, dstPointMat, perspectiveTransform);
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dstPoint.x = dstPointMat.get(0, 0)[0] * textureWidth / quadScale.x;
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dstPoint.y = dstPointMat.get(0, 0)[1] * textureHeight / quadScale.y;
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}
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}
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}
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/// <summary>
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/// Raises the destroy event.
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/// </summary>
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void OnDestroy()
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{
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webCamTextureToMatHelper.Dispose();
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}
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/// <summary>
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/// Raises the back button click event.
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/// </summary>
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public void OnBackButtonClick()
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{
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SceneManager.LoadScene("OpenCVForUnityExample");
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}
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/// <summary>
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/// Raises the play button click event.
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/// </summary>
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public void OnPlayButtonClick()
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{
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webCamTextureToMatHelper.Play();
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}
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/// <summary>
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/// Raises the pause button click event.
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/// </summary>
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public void OnPauseButtonClick()
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{
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webCamTextureToMatHelper.Pause();
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}
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/// <summary>
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/// Raises the stop button click event.
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/// </summary>
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public void OnStopButtonClick()
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{
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webCamTextureToMatHelper.Stop();
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}
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/// <summary>
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/// Raises the change camera button click event.
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/// </summary>
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public void OnChangeCameraButtonClick()
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{
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webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.requestedIsFrontFacing;
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}
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}
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} |