/// <summary>
/// 识别图片
/// </summary>
/// <param name="image"></param>
/// <param name="languageType"></param>
/// <returns></returns>
public static List <OcrWord> OcrImage(string image, LanguageType languageType = LanguageType.CHN_ENG)
{
// 文字识别地址
string ocrHost = "https://aip.baidubce.com/rest/2.0/ocr/v1/accurate_basic";
if (string.IsNullOrWhiteSpace(TOKEN))
{
TOKEN = GetAccessToken();
}
ocrHost = string.Format("{0}?access_token={1}", ocrHost, TOKEN);
// head Content-Type application/x-www-form-urlencoded
NameValueCollection paramList = new NameValueCollection();
NameValueCollection heads = new NameValueCollection();
heads.Add("ContentType", "application/x-www-form-urlencoded");
paramList.Add("image", image);
// paramList.Add("language_type", languageType.ToString());
string type;
string result = HttpHelper.DoPost(ocrHost, paramList, heads, out type);
if (!string.IsNullOrWhiteSpace(result))
{
OcrResponse ocrResponse = JsonConvert.DeserializeObject <OcrResponse>(result);
if (ocrResponse != null)
{
return(ocrResponse.WordsResult);
}
}
return(null);
}
public IEnumerable <Rectangle> ExtractText()
{
if (_textResponse == null)
{
var responseMessage = _client.PostAsync(string.Format(BaseUrl, _endpoint, TextDetection), _content)
.Result;
var stream = responseMessage.Content.ReadAsStreamAsync().Result;
if (stream == null)
{
return(null);
}
using var reader = new StreamReader(stream, Encoding.UTF8);
var response = reader.ReadToEnd();
_textResponse = JsonConvert.DeserializeObject <OcrResponse>(response, OcrSettings);
}
return(_textResponse?.Regions
.Select(region => region.BoundingBox.AsRectangle()));
}
public async Task <IEnumerable <Rectangle> > ExtractTextAsync()
{
if (_textResponse == null)
{
var responseMessage =
await _client.PostAsync(string.Format(BaseUrl, _endpoint, TextDetection), _content);
var stream = await responseMessage.Content.ReadAsStreamAsync();
if (stream == null)
{
return(null);
}
using var reader = new StreamReader(stream, Encoding.UTF8);
var response = await reader.ReadToEndAsync();
_textResponse = JsonConvert.DeserializeObject <OcrResponse>(response, OcrSettings);
}
return(ExtractText());
}
// GET api/<controller>/
// Get a image url, return a list of potential candidates
public HttpResponseMessage Get(string imageUrl)
{
try
{
string json = new WebClient().DownloadString(String.Format("{0}img={1}",
System.Configuration.ConfigurationManager.AppSettings["OcrPrefix"],
imageUrl));
OcrResponse root = Newtonsoft.Json.JsonConvert.DeserializeObject <OcrResponse>(json);
// TODO Get rid of Fake College
String fake_college = "lovett";
if (root.success)
{
StandardMatcher smm = new StandardMatcher();
string parsedContent = smm.denoise(root.value.ToLower()); // TO FN LN 2132 ST HOUSTON TX 77005 USA
//return Request.CreateResponse(HttpStatusCode.InternalServerError, new GeneralFailureMessage(parsedContent));
List <Student> results = smm.generateMatch(parsedContent, fake_college);
return(Request.CreateResponse(HttpStatusCode.OK, results));
}
else
{
// TODO what if this happens.
return(Request.CreateResponse(HttpStatusCode.InternalServerError, new GeneralFailureMessage("Ocr API fail")));
}
//// Fake response
//Result r = new Result();
//r.name = "testname";
//r.email = "testemail";
//List<Result> fake = new List<Result>();
//fake.Add(r);
//return Request.CreateResponse(HttpStatusCode.OK, fake);
}
catch (Exception e)
{
return(Request.CreateResponse(HttpStatusCode.InternalServerError, new GeneralFailureMessage("Get RicePeopePhoto: " + e.Message)));
}
}
