354 lines
11 KiB
C#
354 lines
11 KiB
C#
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#if !UNITY_WSA_10_0
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.SceneManagement;
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using OpenCVForUnity.CoreModule;
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using OpenCVForUnity.DnnModule;
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using OpenCVForUnity.ImgprocModule;
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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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/// Image Classification MobileNet Example
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/// An example of using OpenCV dnn module with Image Classification MobileNet model.
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/// Referring to https://github.com/opencv/opencv_zoo/tree/master/models/image_classification_mobilenet
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/// </summary>
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[RequireComponent(typeof(WebCamTextureToMatHelper))]
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public class ImageClassificationMobilenetExample : 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 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 rgb mat.
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/// </summary>
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Mat rgbMat;
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/// <summary>
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/// The net.
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/// </summary>
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Net net;
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/// <summary>
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/// The classes.
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/// </summary>
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List<string> classes;
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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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/// <summary>
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/// MODEL_FILENAME
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/// </summary>
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protected static readonly string MODEL_FILENAME = "OpenCVForUnity/dnn/image_classification_mobilenetv2_2022apr.onnx";
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/// <summary>
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/// The model filepath.
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/// </summary>
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string model_filepath;
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/// <summary>
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/// CLASSES_FILENAME
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/// </summary>
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protected static readonly string CLASSES_FILENAME = "OpenCVForUnity/dnn/imagenet_labels.txt";
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/// <summary>
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/// The classes filepath.
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/// </summary>
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string classes_filepath;
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#if UNITY_WEBGL
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IEnumerator getFilePath_Coroutine;
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#endif
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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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webCamTextureToMatHelper = gameObject.GetComponent<WebCamTextureToMatHelper>();
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#if UNITY_WEBGL
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getFilePath_Coroutine = GetFilePath();
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StartCoroutine(getFilePath_Coroutine);
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#else
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model_filepath = Utils.getFilePath(MODEL_FILENAME);
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classes_filepath = Utils.getFilePath(CLASSES_FILENAME);
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Run();
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#endif
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}
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#if UNITY_WEBGL
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private IEnumerator GetFilePath()
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{
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var getFilePathAsync_0_Coroutine = Utils.getFilePathAsync(MODEL_FILENAME, (result) =>
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{
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model_filepath = result;
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});
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yield return getFilePathAsync_0_Coroutine;
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var getFilePathAsync_1_Coroutine = Utils.getFilePathAsync(CLASSES_FILENAME, (result) =>
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{
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classes_filepath = result;
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});
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yield return getFilePathAsync_1_Coroutine;
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getFilePath_Coroutine = null;
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Run();
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}
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#endif
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// Use this for initialization
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void Run()
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{
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//if true, The error log of the Native side OpenCV will be displayed on the Unity Editor Console.
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Utils.setDebugMode(true);
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classes = readClassNames(classes_filepath);
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if (classes == null)
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{
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Debug.LogError(CLASSES_FILENAME + " is not loaded. Please read “StreamingAssets/OpenCVForUnity/dnn/setup_dnn_module.pdf” to make the necessary setup.");
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}
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if (string.IsNullOrEmpty(model_filepath))
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{
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Debug.LogError(MODEL_FILENAME + " is not loaded. Please read “StreamingAssets/OpenCVForUnity/dnn/setup_dnn_module.pdf” to make the necessary setup.");
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}
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else
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{
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net = Dnn.readNet(model_filepath);
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}
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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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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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rgbMat = 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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if (rgbMat != null)
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rgbMat.Dispose();
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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 (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
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{
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Mat rgbaMat = webCamTextureToMatHelper.GetMat();
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if (net == null || classes == null)
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{
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Imgproc.putText(rgbaMat, "model file is not loaded.", new Point(5, rgbaMat.rows() - 30), Imgproc.FONT_HERSHEY_SIMPLEX, 0.7, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
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Imgproc.putText(rgbaMat, "Please read console message.", new Point(5, rgbaMat.rows() - 10), Imgproc.FONT_HERSHEY_SIMPLEX, 0.7, new Scalar(255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
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}
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else
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{
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Imgproc.cvtColor(rgbaMat, rgbMat, Imgproc.COLOR_RGBA2RGB);
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Mat blob = Dnn.blobFromImage(rgbMat, 1.0/255.0, new Size(224, 224), new Scalar(0.485, 0.456, 0.406), false, true, CvType.CV_32F);
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// Divide blob by std.
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Core.divide(blob, new Scalar(0.229, 0.224, 0.225), blob);
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net.setInput(blob);
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Mat prob = net.forward();
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//Debug.Log("prob.ToString(): " + prob.ToString());
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Core.MinMaxLocResult minmax = Core.minMaxLoc(prob.reshape(1, 1));
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//Debug.Log ("Best match " + (int)minmax.maxLoc.x);
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//Debug.Log ("Best match class " + classes [(int)minmax.maxLoc.x]);
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//Debug.Log ("Probability: " + minmax.maxVal * 100 + "%");
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prob.Dispose();
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blob.Dispose();
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//Imgproc.putText (rgbaMat, "Best match class " + classes [(int)minmax.maxLoc.x], new Point (5, rgbaMat.rows () - 10), Core.FONT_HERSHEY_SIMPLEX, 1.0, new Scalar (255, 255, 255, 255), 2, Imgproc.LINE_AA, false);
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if (fpsMonitor != null)
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{
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fpsMonitor.consoleText = "Best match class " + classes[(int)minmax.maxLoc.x];
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}
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}
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Utils.matToTexture2D(rgbaMat, texture);
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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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if (net != null)
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net.Dispose();
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Utils.setDebugMode(false);
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#if UNITY_WEBGL
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if (getFilePath_Coroutine != null)
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{
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StopCoroutine(getFilePath_Coroutine);
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((IDisposable)getFilePath_Coroutine).Dispose();
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}
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#endif
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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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private List<string> readClassNames(string filename)
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{
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List<string> classNames = new List<string>();
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System.IO.StreamReader cReader = null;
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try
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{
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cReader = new System.IO.StreamReader(filename, System.Text.Encoding.Default);
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while (cReader.Peek() >= 0)
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{
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string name = cReader.ReadLine();
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classNames.Add(name);
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}
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}
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catch (System.Exception ex)
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{
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Debug.LogError(ex.Message);
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return null;
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}
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finally
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{
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if (cReader != null)
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cReader.Close();
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}
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return classNames;
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}
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}
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}
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#endif
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