android - OCR 无法识别相机图片的内容？

Question

我正在尝试开发一个 OCR 应用程序，它将识别 Camera pic 的内容，但得到一个响应“这个图像太大”，我试图调整图像的大小，但仍然没有发生。我的 OCR 代码是这样的

public class weocr {

String response;

@SuppressWarnings("unused")
private String selectedpath;


weocr(String selectedpath) throws UnsupportedEncodingException, ParseException,     ClientProtocolException, IOException
{
   String url="http://appsv.ocrgrid.org/cgi-bin/weocr/submit_tesseract.cgi";
   response="";
   this.selectedpath=selectedpath;
   HttpClient client = new DefaultHttpClient();
   client.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
   HttpPost post=new HttpPost(url);
   MultipartEntity entity = new MultipartEntity( HttpMultipartMode.BROWSER_COMPATIBLE );


   //test start
   try {
       File imgFile = new  File(selectedpath);
       int h = 200; // height in pixels
       int w = 200; // width in pixels    

    Bitmap bm = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
 Bitmap bm1 = Bitmap.createScaledBitmap(bm, h, w, true);     
    ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
    bm.compress(CompressFormat.JPEG, 50, bos);
    byte[] data = bos.toByteArray();
    ByteArrayBody bab = new ByteArrayBody(data, "testbin.png");


  //test end
      entity.addPart( "userfile", bab);

    // For usual String parameters
    entity.addPart( "outputencoding", new StringBody("utf-8"));
    entity.addPart( "outputformat", new StringBody("txt"));
    post.setEntity( entity );
    HttpResponse response = client.execute(post);
    BufferedReader reader = new BufferedReader(new InputStreamReader(
            response.getEntity().getContent(), "UTF-8"));
    String sResponse;
    StringBuilder s = new StringBuilder();

    while ((sResponse = reader.readLine()) != null) {
        s = s.append(sResponse);
    }


    this.response=new String(s.toString());

    //System.out.println("Response: " + s);

   // Here we go!
   //String response = EntityUtils.toString( client.execute( post ).getEntity(), "UTF-8" );
   //client.getConnectionManager().shutdown();
   //System.out.println(response);
   //Toast toast=Toast.makeText(getApplicationContext(), response, Toast.LENGTH_LONG);
    //toast.show();


   }


   catch (Exception e) {
       Log.e(e.getClass().getName(), e.getMessage());
   }

 }






}