UnityC#接阿里云头像自动分割API

使用阿里云API实现任一图片（人像）对头部进行图片分割，然后将分割后的图片与其他图片叠加，实现换头功能；（虽然越玩越坏，但也挡不住继续学习的心，写完这个继续捣鼓OpenCV）;
1：获取摄像头图像，然后进行截图：
********此处为打开摄像头

    private WebCamTexture webCamTexture;//摄像头的内容 private UnityEngine.UI.RawImage showrawImage; void Start(){ //打开了摄像头WebCamDevice[] devices = WebCamTexture.devices;string deviceName = devices[0].name;webCamTexture = new WebCamTexture(deviceName, 400, 300);// GetComponent<Renderer>().material.mainTexture = webCamTexture;showrawImage.texture = webCamTexture;webCamTexture.Play();  }

*****这里获取截图

 //截图屏幕var texture = ScreenCapture.CaptureScreenshotAsTexture();

2：图片转换为Base64字符串；方法如下：

  /// <summary>/// 图片转换为Base64字符/// </summary>/// <param name="texture2D"></param>/// <returns></returns>public static string ImgToBase64String(Texture2D texture2D){byte[] buffer = GetBytesFromTexture(texture2D); string base64String = Convert.ToBase64String(buffer); return base64String;}/// <summary>/// 图片转换为byte数据/// </summary>/// <param name="texture2D"></param>/// <returns></returns>public static byte[] GetBytesFromTexture(Texture2D texture2D){RenderTexture renderTex = RenderTexture.GetTemporary(texture2D.width,texture2D.height,0,RenderTextureFormat.Default,RenderTextureReadWrite.Linear);Graphics.Blit(texture2D, renderTex);RenderTexture previous = RenderTexture.active;RenderTexture.active = renderTex;Texture2D readableText = new Texture2D(texture2D.width, texture2D.height);readableText.ReadPixels(new Rect(0, 0, renderTex.width, renderTex.height), 0, 0);readableText.Apply(); byte[] bytes = readableText.EncodeToJPG();return bytes; }

3：注册阿里云账户并登录，然后输入：头像自动分割（抠头像）进入到服务购买页面，现在是有免费套餐20次调用的机会，赶紧购买体验把（反正不要钱），这里是APICode查看地址。然后点击下面的API接口，根据自己的需求选择功能，这里选择：人体头部抠图返回透明背景，然后根据需求更改，这里使用UnityC#脚本更改如下：

 ALI_API_Result APIStart(){if (0 < querys.Length){url = url + "?" + querys;}if (host.Contains("https://")){ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));}else{httpRequest = (HttpWebRequest)WebRequest.Create(url);}httpRequest.Method = method;httpRequest.Headers.Add("Authorization", "APPCODE " + appcode);//根据API的要求，定义相对应的Content-TypehttpRequest.ContentType = "application/json; charset=UTF-8";if (0 < bodys.Length){byte[] data = Encoding.UTF8.GetBytes(bodys);using (Stream stream = httpRequest.GetRequestStream()){stream.Write(data, 0, data.Length);}}try{httpResponse = (HttpWebResponse)httpRequest.GetResponse();}catch (WebException ex){httpResponse = (HttpWebResponse)ex.Response;} Stream st = httpResponse.GetResponseStream();StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8")); string jsondata = reader.ReadToEnd();print(jsondata);ALI_API_Result aLI_API_Result = JsonConvert.DeserializeObject<ALI_API_Result>(jsondata);return aLI_API_Result;}public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors){return true;}

************根据阿里云API需要的Json对象进行封装

public class ALI_AI_API
{public string type;  //#图片类型，目前支持\"jpg\"和\"png\"两种类型public string photo;//\"图片数据BASE64编码\"public ALI_AI_API(string typePhoto,string photoBASE64) {type=typePhoto;photo=photoBASE64;}
}
public class ALI_API_Result
{public int status;public float time; public string errmsg;public string error;public ALI_API_PhotoData data;
}
public class ALI_API_PhotoData
{public string result;public float[] size;
}

4：然后就是根据获取的图片进行API请求然后接收返回数据进行显示：

    /// <summary>/// 直接调用或者按钮监听/// </summary>private void GetRequestAli_Api() {var texture = ScreenCapture.CaptureScreenshotAsTexture();ALI_AI_API = new ALI_AI_API("png", GameUtils.ImgToBase64String(texture));// ALI_AI_API = new ALI_AI_API("png", GameUtils.ImgToBase64String(imagurl1));//转换为Base64字符串bodys = JsonConvert.SerializeObject(ALI_AI_API);//获取阿里云结果ALI_API_Result aLI_API_Result = APIStart();if (aLI_API_Result != null && aLI_API_Result.status == 0){//showImage自己定义一个Image组件  public UnityEngine.UI.Image showImage;StartCoroutine(DownloadImage(aLI_API_Result.data.result, showImage));}}/// <summary>/// 获取图片/// </summary>/// <param name="url"></param>/// <param name="showImage"></param>/// <returns></returns>IEnumerator DownloadImage(string url, UnityEngine.UI.Image showImage){UnityEngine.Networking.UnityWebRequest www = UnityWebRequestTexture.GetTexture(url);yield return www.SendWebRequest();if (www.isNetworkError || www.isHttpError){Debug.Log(www.error);}else{Texture2D myTexture = ((DownloadHandlerTexture)www.downloadHandler).texture;Sprite  sprite = Sprite.Create(myTexture, new Rect(0, 0, myTexture.width, myTexture.height), new Vector2(0, 0));showImage.sprite = sprite;showImage.SetNativeSize();}} /// <summary>/// 复制的阿里云API更改了一下/// </summary>/// <returns></returns>ALI_API_Result APIStart(){if (0 < querys.Length){url = url + "?" + querys;}if (host.Contains("https://")){ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));}else{httpRequest = (HttpWebRequest)WebRequest.Create(url);}httpRequest.Method = method;httpRequest.Headers.Add("Authorization", "APPCODE " + appcode);//根据API的要求，定义相对应的Content-TypehttpRequest.ContentType = "application/json; charset=UTF-8";if (0 < bodys.Length){byte[] data = Encoding.UTF8.GetBytes(bodys);using (Stream stream = httpRequest.GetRequestStream()){stream.Write(data, 0, data.Length);}}try{httpResponse = (HttpWebResponse)httpRequest.GetResponse();}catch (WebException ex){httpResponse = (HttpWebResponse)ex.Response;} Stream st = httpResponse.GetResponseStream();StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8")); string jsondata = reader.ReadToEnd();print(jsondata);ALI_API_Result aLI_API_Result = JsonConvert.DeserializeObject<ALI_API_Result>(jsondata);return aLI_API_Result;}public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors){return true;}

效果就是扣去相片中的头部不含颈部图片。。。之前上传了图片，被识别为违规。。。。。太坑了！！！

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