Java TextBlock类代码示例

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
public void detectText(View view) {
    Bitmap textBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.cat);

    TextRecognizer textRecognizer = new TextRecognizer.Builder(this).build();

    if (!textRecognizer.isOperational()) {
        new AlertDialog.Builder(this)
                .setMessage("Text recognizer could not be set up on your device :(")
                .show();
        return;
    }

    Frame frame = new Frame.Builder().setBitmap(textBitmap).build();
    SparseArray<TextBlock> text = textRecognizer.detect(frame);

    for (int i = 0; i < text.size(); ++i) {
        TextBlock item = text.valueAt(i);
        if (item != null && item.getValue() != null) {
            detectedTextView.setText(item.getValue());
        }
    }
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
List<TextBlock> detectTextBlocks(UQI uqi) {
    List<TextBlock> result = new ArrayList<>();
    Bitmap bitmap = this.getBitmap(uqi);
    if (bitmap == null) return result;
    TextRecognizer textRecognizer = new TextRecognizer.Builder(uqi.getContext()).build();
    if (!textRecognizer.isOperational()) {
        Logging.warn("TextRecognizer is not operational");
        textRecognizer.release();
        return result;
    }
    Frame imageFrame = new Frame.Builder().setBitmap(bitmap).build();
    SparseArray<TextBlock> textBlocks = textRecognizer.detect(imageFrame);
    for (int i = 0; i < textBlocks.size(); i++) {
        TextBlock textBlock = textBlocks.get(textBlocks.keyAt(i));
        result.add(textBlock);
    }
    textRecognizer.release();
    return result;
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * Called by the detector to deliver detection results.
 * If your application called for it, this could be a place to check for
 * equivalent detections by tracking TextBlocks that are similar in location and content from
 * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
 * multiple detections.
 */
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
    mGraphicOverlay.clear();
    SparseArray<TextBlock> items = detections.getDetectedItems();
    for (int i = 0; i < items.size(); ++i) {
        TextBlock item = items.valueAt(i);
        if (item != null && item.getValue() != null) {
            final String wort = item.getValue();
            if(wort.length() > 1 && Character.isUpperCase(wort.charAt(0)) && wort.matches("[A-Za-z-]+") && wort.charAt(wort.length() - 1) != '-') {
                Log.d("OCR", "Name detected: " + wort);
                // Show AccountDetailActivity
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        DownloadIntentService.startService(context, OcrCaptureActivity.DOWNLOAD_REQUEST_CODE, wort);
                    }
                }).start();
            } else {
                Log.d("OcrDetectorProcessor", "Text detected! " + item.getValue());
            }
        }
    }
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * onTap is called to capture the first TextBlock under the tap location and return it to
 * the Initializing Activity.
 *
 * @param rawX - the raw position of the tap
 * @param rawY - the raw position of the tap.
 * @return true if the activity is ending.
 */
private boolean onTap(float rawX, float rawY) {
    OcrGraphic graphic = mGraphicOverlay.getGraphicAtLocation(rawX, rawY);
    TextBlock text = null;
    if (graphic != null) {
        text = graphic.getTextBlock();
        if (text != null && text.getValue() != null) {
            Intent data = new Intent();
            data.putExtra(TextBlockObject, text.getValue());
            setResult(CommonStatusCodes.SUCCESS, data);
            finish();
        }
        else {
            Log.d(TAG, "text data is null");
        }
    }
    else {
        Log.d(TAG,"no text detected");
    }
    return text != null;
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
private List<Text> filterInvalidDetections(Detector.Detections<TextBlock> items) {
    List<Text> result = new ArrayList<>();
    SparseArray<TextBlock> detectedItems = items.getDetectedItems();

    for (int i = 0; i < detectedItems.size(); ++i) {
        TextBlock textBlock = detectedItems.valueAt(i);

        // Get sub-components and extract only lines
        List<? extends Text> components = textBlock.getComponents();

        for (Text component : components) {
            String value = component.getValue();
            if (component instanceof Line
                    && value != null
                    && !value.isEmpty()
                    && isFoodRelated((value))) {
                result.add(component);
            } else {
                Log.d(TAG, "filterInvalidDetections: sub-component is not a Line, should we go deeper?");
            }
        }
    }
    return result;
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * onTap is called to speak the tapped TextBlock, if any, out loud.
 *
 * @param rawX - the raw position of the tap
 * @param rawY - the raw position of the tap.
 * @return true if the tap was on a TextBlock
 */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)

private boolean onTap(float rawX, float rawY) {
    OcrGraphic graphic = mGraphicOverlay.getGraphicAtLocation(rawX, rawY);
    TextBlock text = null;
    if (graphic != null) {
        text = graphic.getTextBlock();
        if (text != null && text.getValue() != null) {
            Log.d(TAG, "text data is being displayed! " + text.getValue());

            //Show the string.
            String capturedText = text.getValue();
            capturedText = capturedText.substring(0,1).toUpperCase() + capturedText.substring(1).toLowerCase();
            textView.setText(capturedText);
        }
        else {
            Log.d(TAG, "text data is null");
        }
    }
    else {
        Log.d(TAG,"no text detected");
    }
    return text != null;
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * Called by the detector to deliver detection results.
 * If your application called for it, this could be a place to check for
 * equivalent detections by tracking TextBlocks that are similar in location and content from
 * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
 * multiple detections.
 */
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
    mGraphicOverlay.clear();
    SparseArray<TextBlock> items = detections.getDetectedItems();
    for (int i = 0; i < items.size(); ++i) {
        TextBlock item = items.valueAt(i);
        if (item != null && item.getValue() != null) {
            if (item.getValue().contains("INSTITUTO FEDERAL ELECTORAL")) {
                documentIdentifier.setType(Constants.IFEB);
            } else if (item.getValue().contains("INSTITUTO NACIONAL ELECTORAL")) {
                Log.d("OcrDetectorProcessor", "INE E " + item.getValue());
                documentIdentifier.setType(Constants.IFEE);
            }
        }
        //OcrGraphic graphic = new OcrGraphic(mGraphicOverlay, item);
        //mGraphicOverlay.add(graphic);
    }
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * Called by the detector to deliver detection results.
 * If your application called for it, this could be a place to icon_save for
 * equivalent detections by tracking TextBlocks that are similar in location and content from
 * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
 * multiple detections.
 */
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
    mGraphicOverlay.clear();
    //final String result;
    //String detectedText = "";
    SparseArray<TextBlock> items = detections.getDetectedItems();
    for (int i = 0; i < items.size(); ++i) {

        final TextBlock item = items.valueAt(i);
        OcrGraphic graphic = new OcrGraphic(mGraphicOverlay, item);
        mGraphicOverlay.add(graphic);
        //detectedText += item.getValue();
    }

    /*result = detectedText;
    ((OcrCaptureActivity)context).runOnUiThread(new Runnable() {
        @Override
        public void run() {
            Toast.makeText(context, result, Toast.LENGTH_SHORT).show();
        }
    });*/
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
OcrGraphic(GraphicOverlay overlay, TextBlock text) {
    super(overlay);

    mText = text;

    if (sRectPaint == null) {
        sRectPaint = new Paint();
        sRectPaint.setColor(TEXT_COLOR);
        sRectPaint.setStyle(Paint.Style.STROKE);
        sRectPaint.setStrokeWidth(1.0f);
    }

    if (sTextPaint == null) {
        sTextPaint = new Paint();
        sTextPaint.setColor(TEXT_COLOR);
        sTextPaint.setTextSize(13.6f);
    }
    // Redraw the overlay, as this graphic has been added.
    postInvalidate();
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
OcrGraphic(GraphicOverlay overlay, TextBlock text) {
    super(overlay);

    mText = text;

    if (sRectPaint == null) {
        sRectPaint = new Paint();
        sRectPaint.setColor(TEXT_COLOR);
        sRectPaint.setStyle(Paint.Style.STROKE);
        sRectPaint.setStrokeWidth(4.0f);
    }

    if (sTextPaint == null) {
        sTextPaint = new Paint();
        sTextPaint.setColor(TEXT_COLOR);
        sTextPaint.setTextSize(54.0f);
    }
    // Redraw the overlay, as this graphic has been added.
    postInvalidate();
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * onTap is called to speak the tapped TextBlock, if any, out loud.
 *
 * @param rawX - the raw position of the tap
 * @param rawY - the raw position of the tap.
 * @return true if the tap was on a TextBlock
 */
private boolean onTap(float rawX, float rawY) {
    OcrGraphic graphic = mGraphicOverlay.getGraphicAtLocation(rawX, rawY);
    TextBlock text = null;
    if (graphic != null) {
        text = graphic.getTextBlock();
        if (text != null && text.getValue() != null) {
            Log.d(TAG, "text data is being spoken! " + text.getValue());
            // Speak the string.
            tts.speak(text.getValue(), TextToSpeech.QUEUE_ADD, null, "DEFAULT");
        }
        else {
            Log.d(TAG, "text data is null");
        }
    }
    else {
        Log.d(TAG,"no text detected");
    }
    return text != null;
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
    SparseArray<TextBlock> items = detections.getDetectedItems();
    for (int i = 0; i < items.size(); ++i) {
        TextBlock item = items.valueAt(i);
        if (item != null && item.getValue() != null) {
            Log.d("Processor", "Text detected! " + item.getValue());
        }
    }
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
String detectText(UQI uqi) {
    StringBuilder text = new StringBuilder();
    for (TextBlock textBlock : this.detectTextBlocks(uqi)) {
        text.append(textBlock.getValue()).append("\n");
    }
    return text.toString();
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * Called by the detector to deliver detection results.
 * If your application called for it, this could be a place to check for
 * equivalent detections by tracking TextBlocks that are similar in location and content from
 * previous frames, or reduce noise by eliminating TextBlocks that have not persisted through
 * multiple detections.
 */
@Override
public void receiveDetections(Detector.Detections<TextBlock> detections) {
    mGraphicOverlay.clear();
    SparseArray<TextBlock> items = detections.getDetectedItems();
    for (int i = 0; i < items.size(); ++i) {
        TextBlock item = items.valueAt(i);
        OcrGraphic graphic = new OcrGraphic(mGraphicOverlay, item);
        mGraphicOverlay.add(graphic);
    }
}
 

import com.google.android.gms.vision.text.TextBlock; //导入依赖的package包/类
/**
 * Checks whether a point is within the bounding box of this graphic.
 * The provided point should be relative to this graphic's containing overlay.
 * @param x An x parameter in the relative context of the canvas.
 * @param y A y parameter in the relative context of the canvas.
 * @return True if the provided point is contained within this graphic's bounding box.
 */
public boolean contains(float x, float y) {
    TextBlock text = mText;
    if (text == null) {
        return false;
    }
    RectF rect = new RectF(text.getBoundingBox());
    rect.left = translateX(rect.left);
    rect.top = translateY(rect.top);
    rect.right = translateX(rect.right);
    rect.bottom = translateY(rect.bottom);
    return (rect.left < x && rect.right > x && rect.top < y && rect.bottom > y);
}