ビットマップをtesseractに渡して、読み取った文字を取得しようとしています。私はこのようにコードを書きました:
TessBaseAPI baseApi = new TessBaseAPI();
baseApi.setImage(ReadFile.readBitmap(charscropped));
String capturedChars = baseApi.getUTF8Text(); // app crashes in this line
ここに何が欠けていますか?
Logcat の出力:
11-03 15:00:54.473: E/AndroidRuntime(5674): FATAL EXCEPTION: main
11-03 15:00:54.473: E/AndroidRuntime(5674): java.lang.NullPointerException
11-03 15:00:54.473: E/AndroidRuntime(5674): at com.googlecode.tesseract.android.TessBaseAPI.getUTF8Text(TessBaseAPI.java:409)
11-03 15:00:54.473: E/AndroidRuntime(5674): at com.elottery.ocr.Test$4.onClick(Test.java:110)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.view.View.performClick(View.java:3567)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.view.View$PerformClick.run(View.java:14224)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.os.Handler.handleCallback(Handler.java:605)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.os.Handler.dispatchMessage(Handler.java:92)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.os.Looper.loop(Looper.java:137)
11-03 15:00:54.473: E/AndroidRuntime(5674): at android.app.ActivityThread.main(ActivityThread.java:4517)
11-03 15:00:54.473: E/AndroidRuntime(5674): at java.lang.reflect.Method.invokeNative(Native Method)
11-03 15:00:54.473: E/AndroidRuntime(5674): at java.lang.reflect.Method.invoke(Method.java:511)
11-03 15:00:54.473: E/AndroidRuntime(5674): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
11-03 15:00:54.473: E/AndroidRuntime(5674): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
11-03 15:00:54.473: E/AndroidRuntime(5674): at dalvik.system.NativeStart.main(Native Method)