CODEWITHSUNDEEP
javaandroidtensorflowtensorflow-liteobject-detection-api
fah127
fah127

Reputation: 151

Tensorflow Lite Custom Object detection Model Error in Android app

could you please help to solve this error?

I am testing a custom Object Detection model using TensorFlow Lite in Android App according to the documentation, but I have an error when the library tries to recognize an image.

I am using the Tensorflow lite sample app: https://github.com/tensorflow/examples/tree/master/lite/examples/object_detection/android

Using Task Library: https://www.tensorflow.org/lite/inference_with_metadata/task_library/object_detector

dependency version implementation 'org.tensorflow:tensorflow-lite-task-vision:0.1.0'

When this method is executed, this error is obtained:

method List<Detection> results = objectDetector.detect(TensorImage.fromBitmap(bitmap));

error

Abort message: 'JNI DETECTED ERROR IN APPLICATION: JNI NewStringUTF called with pending exception java.lang.NoSuchMethodError: no static method Lorg/tensorflow/lite/support/label/Category;.create(Ljava/lang/String;Ljava/lang/String;F)Lorg/tensorflow/lite/support/label/Category;"
        at java.util.List org.tensorflow.lite.task.vision.detector.ObjectDetector.detectNative(long, java.nio.ByteBuffer, int, int, int) (ObjectDetector.java:-2)
        at java.util.List org.tensorflow.lite.task.vision.detector.ObjectDetector.detect(org.tensorflow.lite.support.image.TensorImage, org.tensorflow.lite.task.core.vision.ImageProcessingOptions) (ObjectDetector.java:312)
        at java.util.List org.tensorflow.lite.task.vision.detector.ObjectDetector.detect(org.tensorflow.lite.support.image.TensorImage) (ObjectDetector.java:292)
        at java.util.List org.tensorflow.lite.examples.detection.tflite.TFLiteObjectDetectionAPIModel.recognizeImage(android.graphics.Bitmap) (TFLiteObjectDetectionAPIModel.java:87)
        at void org.tensorflow.lite.examples.detection.DetectorActivity$2.run() (DetectorActivity.java:187)
        at void android.os.Handler.handleCallback(android.os.Message) (Handler.java:938)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:99)
        at void android.os.Looper.loop() (Looper.java:223)
        at void android.os.HandlerThread.run() (HandlerThread.java:67)
    
        in call to NewStringUTF
        from java.util.List org.tensorflow.lite.task.vision.detector.ObjectDetector.detectNative(long, java.nio.ByteBuffer, int, int, int)'```

Upvotes: 0

Views: 1132

Answers (1)

Lu Wang
Lu Wang

Reputation: 484

This issue has been fixed in the Jan, 2021, which is not included in 0.1.0. Please try the nightly version from Jcenter (not Maven), and see if it works.

org.tensorflow:tensorflow-lite-task-vision:0.0.0-nightly-SNAPSHOT

And we'll release a new stable version very soon in April. Please stay tuned!

Upvotes: 1

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