Unity调用摄像头拍照及保存图片
发表于2018-10-17
可能大家在使用Unity开发项目的时候，会碰到这样一个需求，就是去调用摄像头拍照或者保存图片，其中摄像头拍照方式也有多种，这里就给大家简单介绍下。
代码如下：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using System.IO;
public class CameraTest : MonoBehaviour
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//摄像头图像类，继承自texture
WebCamTexture tex;
public Image WebCam;
public MeshRenderer ma;
public Button saveImage;
public RawImage bgimage_02;
// public RawImage bgimage_03;
int i;
void Start()
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//开启协程，获取摄像头图像数据
StartCoroutine(OpenCamera());
saveImage.onClick.AddListener(SaveImage);
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// Update is called once per frame
void Update()
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IEnumerator OpenCamera()
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//等待用户允许访问
yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
//如果用户允许访问，开始获取图像
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
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//先获取设备
WebCamDevice[] device = WebCamTexture.devices;
string deviceName = device[0].name;
//然后获取图像
tex = new WebCamTexture(deviceName);
//将获取的图像赋值
ma.material.mainTexture = tex;
//开始实施获取
tex.Play();
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private void SaveImage()
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//在上一段代码中加入该方法
Save(tex);
i += 1;
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public void Save(WebCamTexture t)
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Texture2D t2d = new Texture2D(t.width, t.height, TextureFormat.ARGB32, true);
//将WebCamTexture 的像素保存到texture2D中
t2d.SetPixels(t.GetPixels());
//t2d.ReadPixels(new Rect(200,200,200,200),0,0,false);
t2d.Apply();
//编码
byte[] imageTytes = t2d.EncodeToJPG();
//if (i % 2 == 1)
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// bgimage_02.texture= t2d;
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//else
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// bgimage_03.texture = t2d;
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bgimage_02.texture= t2d;
//存储
File.WriteAllBytes(Application.streamingAssetsPath + "/my/" + Time.time + ".jpg", imageTytes);
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void StopCamera()
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//等待用户允许访问
//Application.RequestUserAuthorization(UserAuthorization.WebCam);
//如果用户允许访问，开始获取图像
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
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//先获取设备
WebCamDevice[] device = WebCamTexture.devices;
string deviceName = device[0].name;
//然后获取图像
// tex = new WebCamTexture(deviceName);
// //将获取的图像赋值
// ma.material.mainTexture = tex;
//开始实施获取
tex.Stop();
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//返回按钮
public void Back()
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StopCamera();
UnityEngine.SceneManagement.SceneManager.LoadScene(0);
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把它挂到一个有renderer的物体上，
上面已经有调用摄像头并可以保存图片。
保存图片有多种方式 ：
using UnityEngine;
using System.Collections;
using System.IO;
using UnityEngine.UI;
public class FrameAnimation : MonoBehaviour
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public Texture2D image;
public int w;
public int h;
public float nextTime = 0.0f;
public float rate = 0.3f;
int i = 0;
public static string imageName;
public RawImage raw;
// Use this for initialization
void Start()
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w = Screen.width;
h = Screen.height;
image = new Texture2D(w, h);
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// Update is called once per frame
void Update()
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//if (Input.GetMouseButton(0) && Time.time > nextTime)
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// nextTime = Time.time + rate;
// i++;
// StartCoroutine(SaveImage(i));
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public void Btn_SavrImage()
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////拍照保存
//i++;
//StartCoroutine(SaveImage(i));
UnityEngine.SceneManagement.SceneManager.LoadScene(2);
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IEnumerator SaveImage(int i)
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yield return new WaitForEndOfFrame();
image.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, false);//read pixels from screen to texture
image.Apply();
byte[] bytes = image.EncodeToPNG();
string date = System.DateTime.Now.ToString("dd-MM-yy");
imageName = i + date + ".png";
File.WriteAllBytes(Application.streamingAssetsPath + "/" +imageName, bytes);
ReadImage();
Debug.Log("write a pic"+imageName);
yield return null;
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public void ReadImage()
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string textureName = Application.streamingAssetsPath + imageName;
//raw.name = textureName;
raw.texture = image;
// UnityEngine.SceneManagement.SceneManager.LoadScene(0);
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注意：image.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, false);
我遇到一个问题截图超过1024，768的时候有时候会报错，这个问题因为后期不用了没有再继续深究。来自：https://blog.csdn.net/liang_704959721/article/details/80880422