@SuppressWarnings("unused")
private OcrResult getOcrResult() {
OcrResult ocrResult;
String textResult;
long start = System.currentTimeMillis();
try {
baseApi.setImage(ReadFile.readBitmap(bitmap));
textResult = baseApi.getUTF8Text();
timeRequired = System.currentTimeMillis() - start;
// Check for failure to recognize text
if (textResult == null || textResult.equals("")) {
return null;
}
ocrResult = new OcrResult();
ocrResult.setWordConfidences(baseApi.wordConfidences());
ocrResult.setMeanConfidence(baseApi.meanConfidence());
if (ViewfinderView.DRAW_REGION_BOXES) {
ocrResult.setRegionBoundingBoxes(baseApi.getRegions().getBoxRects());
}
if (ViewfinderView.DRAW_TEXTLINE_BOXES) {
ocrResult.setTextlineBoundingBoxes(baseApi.getTextlines().getBoxRects());
}
if (ViewfinderView.DRAW_STRIP_BOXES) {
ocrResult.setStripBoundingBoxes(baseApi.getStrips().getBoxRects());
}
// Always get the word bounding boxes--we want it for annotating the bitmap after the user
// presses the shutter button, in addition to maybe wanting to draw boxes/words during the
// continuous mode recognition.
ocrResult.setWordBoundingBoxes(baseApi.getWords().getBoxRects());
// if (ViewfinderView.DRAW_CHARACTER_BOXES || ViewfinderView.DRAW_CHARACTER_TEXT) {
// ocrResult.setCharacterBoundingBoxes(baseApi.getCharacters().getBoxRects());
// }
} catch (RuntimeException e) {
Log.e(
"OcrRecognizeAsyncTask",
"Caught RuntimeException in request to Tesseract. Setting state to CONTINUOUS_STOPPED.");
e.printStackTrace();
try {
baseApi.clear();
activity.stopHandler();
} catch (NullPointerException e1) {
// Continue
}
return null;
}
timeRequired = System.currentTimeMillis() - start;
ocrResult.setBitmap(bitmap);
ocrResult.setText(textResult);
ocrResult.setRecognitionTimeRequired(timeRequired);
return ocrResult;
}
private void testGetUTF8Text(String language, int ocrEngineMode) {
final String inputText = "hello";
final Bitmap bmp = getTextImage(inputText, 640, 480);
// Attempt to initialize the API.
final TessBaseAPI baseApi = new TessBaseAPI();
baseApi.init(TESSBASE_PATH, language, ocrEngineMode);
baseApi.setPageSegMode(TessBaseAPI.PageSegMode.PSM_SINGLE_LINE);
baseApi.setImage(bmp);
// Ensure that the result is correct.
final String outputText = baseApi.getUTF8Text();
assertEquals("\"" + outputText + "\" != \"" + inputText + "\"", inputText, outputText);
// Ensure getRegions() works.
final Pixa regions = baseApi.getRegions();
assertEquals("Found incorrect number of regions.", regions.size(), 1);
regions.recycle();
// Ensure getTextlines() works.
final Pixa textlines = baseApi.getTextlines();
assertEquals("Found incorrect number of textlines.", textlines.size(), 1);
textlines.recycle();
// Ensure getStrips() works.
final Pixa strips = baseApi.getStrips();
assertEquals("Found incorrect number of strips.", strips.size(), 1);
strips.recycle();
// Ensure getWords() works.
final Pixa words = baseApi.getWords();
assertEquals("Found incorrect number of words.", words.size(), 1);
words.recycle();
// Ensure getConnectedComponents() works.
final Pixa connectedComponents = baseApi.getConnectedComponents();
assertTrue("Connected components not found.", connectedComponents.size() > 0);
connectedComponents.recycle();
// Iterate through the results.
final ResultIterator iterator = baseApi.getResultIterator();
String lastUTF8Text;
float lastConfidence;
int[] lastBoundingBox;
Rect lastBoundingRect;
int count = 0;
iterator.begin();
do {
lastUTF8Text = iterator.getUTF8Text(PageIteratorLevel.RIL_WORD);
lastConfidence = iterator.confidence(PageIteratorLevel.RIL_WORD);
lastBoundingBox = iterator.getBoundingBox(PageIteratorLevel.RIL_WORD);
lastBoundingRect = iterator.getBoundingRect(PageIteratorLevel.RIL_WORD);
count++;
} while (iterator.next(PageIteratorLevel.RIL_WORD));
iterator.delete();
assertEquals("Found incorrect number of results.", count, 1);
assertEquals("Found an incorrect result.", lastUTF8Text, outputText);
assertTrue("Result was not high-confidence.", lastConfidence > 80);
assertTrue("Result bounding box not found.", lastBoundingBox[2] > 0 && lastBoundingBox[3] > 0);
boolean validBoundingRect =
lastBoundingRect.left < lastBoundingRect.right
&& lastBoundingRect.top < lastBoundingRect.bottom;
assertTrue("Result bounding box Rect is incorrect.", validBoundingRect);
// Attempt to shut down the API.
baseApi.end();
bmp.recycle();
}