开始用的腾讯云图片转文字接口,识别效果不是太好,而且客户指定用cloudmersive转文字
cloudmersive是国外的网站,经测试识别率还是挺高的
接口地址:/ocr-api
接口有点难找,试了很久api控制台,总算找到可用的接口-----Optical Character Recognition (OCR) API 光学字符识别（OCR）API的/ ocr / photo / to / words-with-location
以下是SDK提供的接入代码
安装包Core.OCR-版本2.0.2
using Core.OCR.Api; using Core.OCR.Client; using Core.OCR.Model;
Configuration.Default.AddApiKey("Apikey", "YOUR_API_KEY");//秘钥var apiInstance = new ImageOcrApi();var imageFile = new System.IO.Stream();//传入的文件流var recognitionMode = recognitionMode_example; //识别模式串 一般为Normalvar language = language_example;//语言 ZHO（中文-简体）var preprocessing = preprocessing_example; //不填 默认“自动”var diagnostics = diagnostics_example; //诊断模式 truetry{// Convert a photo of a document or receipt into words with locationPhotoToWordsWithLocationResult result = apiInstance.ImageOcrPhotoWordsWithLocation(imageFile, recognitionMode, language, preprocessing, diagnostics);Debug.WriteLine(result);}catch (Exception e){Debug.Print("Exception when calling ImageOcrApi.ImageOcrPhotoWordsWithLocation: " + e.Message );}
跑通了后,发现放道服务器上会遇到---------调用接口提示无法连接SSL,System.Security.Authentication.AuthenticationException:根据验证过程，远程证书无效
也就是下一篇文章提到的问题
试了很多方法跳过远程方法都不行
后来改成了不用SDK,自己写方法用url传参,再加上忽略远程证书,默认设置为true的代码,就跑通了
public Object getresponse(byte[] imgbyte){var result = string.Empty;//跳过远程证书验证HttpClientHandler httpClientHandler = new HttpClientHandler();httpClientHandler.ServerCertificateCustomValidationCallback = (message, cert, chain, error) => true;using (HttpClient client = new HttpClient(httpClientHandler)){MultipartFormDataContent content = new MultipartFormDataContent();client.DefaultRequestHeaders.Add("recognitionMode", "Normal");client.DefaultRequestHeaders.Add("language", "ZHO");client.DefaultRequestHeaders.Add("preprocessing", "");client.DefaultRequestHeaders.Add("diagnostics", "true");client.DefaultRequestHeaders.Add("Apikey", "b***********************************");//添加文件参数content.Add(new ByteArrayContent(imgbyte), "file", "聊天图片");Logs.WriteLog(LogType.Info, "----content: -----" + content);var requestUri = "/ocr/photo/to/words-with-location";Logs.WriteLog(LogType.Info, "----requestUri: -----" + requestUri);result = client.PostAsync(requestUri, content).Result.Content.ReadAsStringAsync().Result;Logs.WriteLog(LogType.Info, "----结果: -----" + result);return result;}}
识别出来是这种,不是识别出来一条一条的完整数据,只是识别出来两三个字符,需要自己去根据X和Y坐标进行拼接,解析成可用的结果,怎么组装内容这就是涉及到算法了.
