Intent intent = new Intent("com.intsig.camscanner.ACTION_SCAN");
Uri uri = Uri.fromFile(new File("/sdcard/source.jpg")); //Or content uri picked from gallery
intent.putExtra(Intent.EXTRA_STREAM, uri);
intent.putExtra("scanned_image", “/sdcard/scanned.jpg”);
intent.putExtra("pdf_path", “/sdcard/processed.jpg”); (Optionnal)
intent.putExtra("org_image", “/sdcard/org.jpg”); (Optionnal)
startActivityForResult(intent, REQUEST_CODE);