android - how to use noise filter with ocr for google vision library -


looking ocr filter

i want improve quality of text recognition. want use filter can able ignore noise during recognition. tried many sites not solution.

here code

textrecognizer textrecognizer = new textrecognizer.builder(getapplicationcontext()).build();     if (!textrecognizer.isoperational())      {         log.w("mainactivity", "detector dependencies not yet available");     } else {         camerasource = new camerasource.builder(getapplicationcontext(), textrecognizer)                  .setfacing(camerasource.camera_facing_back)                 .setrequestedpreviewsize(1280,1024)                 .setrequestedfps(2.0f)                 .setautofocusenabled(true)                 .build();          cameraview.getholder().addcallback(new surfaceholder.callback() {             @override             public void surfacecreated(surfaceholder surfaceholder) {                  try {                     if (activitycompat.checkselfpermission(getapplicationcontext(), manifest.permission.camera) != packagemanager.permission_granted) {                          activitycompat.requestpermissions(mainactivity.this,                                 new string[]{manifest.permission.camera},                                 requestcamerapermissionid);                          return;                     }                     camerasource.start(cameraview.getholder());                 } catch (ioexception e) {                     e.printstacktrace();                 }             }              @override             public void surfacechanged(surfaceholder surfaceholder, int i, int i1, int i2) {              }              @override             public void surfacedestroyed(surfaceholder surfaceholder) {                  camerasource.stop();              }         });          textrecognizer.setprocessor(new detector.processor<textblock>() {             @override             public void release() {              }


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