@SmallTest
public void testGetThresholdedImage() {
// Attempt to initialize the API.
final TessBaseAPI baseApi = new TessBaseAPI();
baseApi.init(TESSBASE_PATH, DEFAULT_LANGUAGE);
// Set the image to a Bitmap.
final Bitmap bmp = Bitmap.createBitmap(640, 480, Bitmap.Config.ARGB_8888);
baseApi.setImage(bmp);
// Check the size of the thresholded image.
Pix pixd = baseApi.getThresholdedImage();
assertNotNull("Thresholded image is null.", pixd);
assertEquals(bmp.getWidth(), pixd.getWidth());
assertEquals(bmp.getHeight(), pixd.getHeight());
// Attempt to shut down the API.
baseApi.end();
bmp.recycle();
pixd.recycle();
}
private void textExtraction(Bitmap croppedPic) {
int width, height;
height = croppedPic.getHeight();
width = croppedPic.getWidth();
Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bmpGrayscale);
Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
paint.setColorFilter(f);
c.drawBitmap(croppedPic, 0, 0, paint);
baseApi.setImage(bmpGrayscale);
baseApi.setImage(baseApi.getThresholdedImage());
String recognizedText = baseApi.getUTF8Text();
recognizedText = recognizedText.replaceAll("[^a-zA-Z0-9\\s]+", "");
extractedText.setText(recognizedText);
croppedImage.setImageBitmap(bmpGrayscale);
}