微軟Face API體驗——人臉檢測

微軟推出了全新REST API，現在可免費獲取密鑰，大家可以趕快申請！申請地址：https://cn.projectoxford.ai/subscription

看了網站的API介紹，忍不住趕快體驗一把。

寫一個簡單的console程序：

public static void test()
        {
            try
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.projectoxford.ai/face/v0/detections?subscription-key=xxxxx");
                request.Method = "POST";
                request.ContentType = "application/octet-stream";                
                string url = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "pic1.jpg");
                byte[] requestBody = LoadByteData(url);
                using (Stream stream = request.GetRequestStream())
                {
                    stream.Write(requestBody, 0, requestBody.Length);

                    using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                    {
                        var responseString = response.GetResponseStream();
                        using (var reader = new StreamReader(responseString))
                        {
                            Console.Write(response.StatusCode + reader.ReadToEnd());
                        }
                    }
                }

            }
            catch (WebException wex)
            {
                //verify
                var response = (HttpWebResponse)wex.Response;
                using (var stream = wex.Response.GetResponseStream())
                using (var reader = new StreamReader(stream))
                {
                    Console.Write(response.StatusCode + reader.ReadToEnd());
                }
            }
        }
        private static byte[] LoadByteData(string filePath)
        {
            FileStream file = new FileStream(filePath, FileMode.Open);
            byte[] bytes = new byte[file.Length];
            file.Read(bytes, 0, bytes.Length);
            file.Close();
            return bytes;
        }

結果出來了，測出了人臉，如果設置了年齡、性別參數，還返回了年齡和性別。