Unity之讀取本地圖檔

1.下載下傳Opencv for unity.

2.把OpenCVForUnity下的StreamingAssets拖到Assets下。

3.點選Tools->opencv for unity->set plugin import settings.

4.

using UnityEngine;

using System.Collections;

using OpenCVForUnity;

using System;

using System.Collections.Generic; 


public class imageTest : MonoBehaviour {

    public Texture2D img; 


    // Use this for initialization

    void Start () {

        

    }

    

    // Update is called once per frame

    void Update () {

        if (Input.GetKeyDown(KeyCode.A)){

            int height = 500;

            string imgpath = "/Users/shiyuhuang/Downloads/ATOCAR/ATOCAR_UNITY_2/ATOCAR_UNITY/13.jpg";

            Mat imgMat2 = Imgcodecs.imread(imgpath);

            Mat imgMat = new Mat ();

            int new_w, new_h=500;

            double scale  = new_h/Convert.ToDouble(imgMat2.rows ());

            new_w = Convert.ToInt32 (imgMat2.cols () * scale);


            Imgproc.resize (imgMat2, imgMat,new Size( Convert.ToDouble(new_w), Convert.ToDouble(new_h)) );

            List<Mat> channels = new List<Mat>();

            OpenCVForUnity.Core.split (imgMat,channels);

            Mat a = new Mat ();

            a = channels [0];

            channels [0] = channels [2];

            channels [2] = a;

            OpenCVForUnity.Core.merge (channels,imgMat);


            Debug.Log("您按下了A鍵"+imgMat.size());

            SpriteRenderer spr = gameObject.GetComponent<SpriteRenderer>();


            Texture2D texture2d = new Texture2D (new_w, new_h); 

            Utils.matToTexture2D (imgMat, texture2d);

            Sprite sp = Sprite.Create(texture2d,new UnityEngine.Rect(0, 0, new_w, new_h), new Vector2(0.5f,0.5f) );//注意居中顯示采用0.5f值  

            spr.sprite = sp;  


//            gameObject.GetComponent<Renderer> ().material.mainTexture = texture2d;


//            Mat imgMat2 = new Mat (texture2d.height, texture2d.width, CvType.CV_8UC4);


//            Utils.texture2DToMat (texture2d, imgMat2);

//            Imgcodecs.imwrite ("/Users/shiyuhuang/Downloads/ATOCAR/ATOCAR_UNITY_2/ATOCAR_UNITY/test2.jpg",imgMat2);

        }

    }

}