Examples with BufferedImageLuminanceSource com.google.zxing.BufferedImageLuminanceSource used on opensource projects

Example 6 with BufferedImageLuminanceSource

use of com.google.zxing.BufferedImageLuminanceSource in project zxing by zxing.

the class MultiTestCase method testMulti.

@Test
public void testMulti() throws Exception {
    // Very basic test for now
    Path testBase = AbstractBlackBoxTestCase.buildTestBase("src/test/resources/blackbox/multi-1");
    Path testImage = testBase.resolve("1.png");
    BufferedImage image = ImageIO.read(testImage.toFile());
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    MultipleBarcodeReader reader = new GenericMultipleBarcodeReader(new MultiFormatReader());
    Result[] results = reader.decodeMultiple(bitmap);
    assertNotNull(results);
    assertEquals(2, results.length);
    assertEquals("031415926531", results[0].getText());
    assertEquals(BarcodeFormat.UPC_A, results[0].getBarcodeFormat());
    assertEquals("www.airtable.com/jobs", results[1].getText());
    assertEquals(BarcodeFormat.QR_CODE, results[1].getBarcodeFormat());
}

Example 7 with BufferedImageLuminanceSource

use of com.google.zxing.BufferedImageLuminanceSource in project zxing by zxing.

the class AbstractBlackBoxTestCase method testBlackBoxCountingResults.

private void testBlackBoxCountingResults(boolean assertOnFailure) throws IOException {
    assertFalse(testResults.isEmpty());
    List<Path> imageFiles = getImageFiles();
    int testCount = testResults.size();
    int[] passedCounts = new int[testCount];
    int[] misreadCounts = new int[testCount];
    int[] tryHarderCounts = new int[testCount];
    int[] tryHarderMisreadCounts = new int[testCount];
    for (Path testImage : imageFiles) {
        log.info(String.format("Starting %s", testImage));
        BufferedImage image = ImageIO.read(testImage.toFile());
        String testImageFileName = testImage.getFileName().toString();
        String fileBaseName = testImageFileName.substring(0, testImageFileName.indexOf('.'));
        Path expectedTextFile = testBase.resolve(fileBaseName + ".txt");
        String expectedText;
        if (Files.exists(expectedTextFile)) {
            expectedText = readFileAsString(expectedTextFile, StandardCharsets.UTF_8);
        } else {
            expectedTextFile = testBase.resolve(fileBaseName + ".bin");
            assertTrue(Files.exists(expectedTextFile));
            expectedText = readFileAsString(expectedTextFile, StandardCharsets.ISO_8859_1);
        }
        Path expectedMetadataFile = testBase.resolve(fileBaseName + ".metadata.txt");
        Properties expectedMetadata = new Properties();
        if (Files.exists(expectedMetadataFile)) {
            try (BufferedReader reader = Files.newBufferedReader(expectedMetadataFile, StandardCharsets.UTF_8)) {
                expectedMetadata.load(reader);
            }
        }
        for (int x = 0; x < testCount; x++) {
            float rotation = testResults.get(x).getRotation();
            BufferedImage rotatedImage = rotateImage(image, rotation);
            LuminanceSource source = new BufferedImageLuminanceSource(rotatedImage);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
            try {
                if (decode(bitmap, rotation, expectedText, expectedMetadata, false)) {
                    passedCounts[x]++;
                } else {
                    misreadCounts[x]++;
                }
            } catch (ReaderException ignored) {
                log.fine(String.format("could not read at rotation %f", rotation));
            }
            try {
                if (decode(bitmap, rotation, expectedText, expectedMetadata, true)) {
                    tryHarderCounts[x]++;
                } else {
                    tryHarderMisreadCounts[x]++;
                }
            } catch (ReaderException ignored) {
                log.fine(String.format("could not read at rotation %f w/TH", rotation));
            }
        }
    }
    // Print the results of all tests first
    int totalFound = 0;
    int totalMustPass = 0;
    int totalMisread = 0;
    int totalMaxMisread = 0;
    for (int x = 0; x < testResults.size(); x++) {
        TestResult testResult = testResults.get(x);
        log.info(String.format("Rotation %d degrees:", (int) testResult.getRotation()));
        log.info(String.format(" %d of %d images passed (%d required)", passedCounts[x], imageFiles.size(), testResult.getMustPassCount()));
        int failed = imageFiles.size() - passedCounts[x];
        log.info(String.format(" %d failed due to misreads, %d not detected", misreadCounts[x], failed - misreadCounts[x]));
        log.info(String.format(" %d of %d images passed with try harder (%d required)", tryHarderCounts[x], imageFiles.size(), testResult.getTryHarderCount()));
        failed = imageFiles.size() - tryHarderCounts[x];
        log.info(String.format(" %d failed due to misreads, %d not detected", tryHarderMisreadCounts[x], failed - tryHarderMisreadCounts[x]));
        totalFound += passedCounts[x] + tryHarderCounts[x];
        totalMustPass += testResult.getMustPassCount() + testResult.getTryHarderCount();
        totalMisread += misreadCounts[x] + tryHarderMisreadCounts[x];
        totalMaxMisread += testResult.getMaxMisreads() + testResult.getMaxTryHarderMisreads();
    }
    int totalTests = imageFiles.size() * testCount * 2;
    log.info(String.format("Decoded %d images out of %d (%d%%, %d required)", totalFound, totalTests, totalFound * 100 / totalTests, totalMustPass));
    if (totalFound > totalMustPass) {
        log.warning(String.format("+++ Test too lax by %d images", totalFound - totalMustPass));
    } else if (totalFound < totalMustPass) {
        log.warning(String.format("--- Test failed by %d images", totalMustPass - totalFound));
    }
    if (totalMisread < totalMaxMisread) {
        log.warning(String.format("+++ Test expects too many misreads by %d images", totalMaxMisread - totalMisread));
    } else if (totalMisread > totalMaxMisread) {
        log.warning(String.format("--- Test had too many misreads by %d images", totalMisread - totalMaxMisread));
    }
    // Then run through again and assert if any failed
    if (assertOnFailure) {
        for (int x = 0; x < testCount; x++) {
            TestResult testResult = testResults.get(x);
            String label = "Rotation " + testResult.getRotation() + " degrees: Too many images failed";
            assertTrue(label, passedCounts[x] >= testResult.getMustPassCount());
            assertTrue("Try harder, " + label, tryHarderCounts[x] >= testResult.getTryHarderCount());
            label = "Rotation " + testResult.getRotation() + " degrees: Too many images misread";
            assertTrue(label, misreadCounts[x] <= testResult.getMaxMisreads());
            assertTrue("Try harder, " + label, tryHarderMisreadCounts[x] <= testResult.getMaxTryHarderMisreads());
        }
    }
}

Example 8 with BufferedImageLuminanceSource

use of com.google.zxing.BufferedImageLuminanceSource in project zxing by zxing.

the class RSSExpandedInternalTestCase method testDecodeDataCharacter.

@Test
public void testDecodeDataCharacter() throws Exception {
    BufferedImage image = readImage("3.png");
    BinaryBitmap binaryMap = new BinaryBitmap(new GlobalHistogramBinarizer(new BufferedImageLuminanceSource(image)));
    BitArray row = binaryMap.getBlackRow(binaryMap.getHeight() / 2, null);
    //image pixels where the A1 pattern starts (at 124) and ends (at 214)
    int[] startEnd = { 145, 243 };
    // A
    int value = 0;
    FinderPattern finderPatternA1 = new FinderPattern(value, startEnd, startEnd[0], startEnd[1], image.getHeight() / 2);
    //{1, 8, 4, 1, 1};
    RSSExpandedReader rssExpandedReader = new RSSExpandedReader();
    DataCharacter dataCharacter = rssExpandedReader.decodeDataCharacter(row, finderPatternA1, true, false);
    assertEquals(19, dataCharacter.getValue());
    assertEquals(1007, dataCharacter.getChecksumPortion());
}

Example 9 with BufferedImageLuminanceSource

use of com.google.zxing.BufferedImageLuminanceSource in project zxing by zxing.

the class TestCaseUtil method getBinaryBitmap.

static BinaryBitmap getBinaryBitmap(String path) throws IOException {
    BufferedImage bufferedImage = getBufferedImage(path);
    BufferedImageLuminanceSource luminanceSource = new BufferedImageLuminanceSource(bufferedImage);
    return new BinaryBitmap(new GlobalHistogramBinarizer(luminanceSource));
}

Example 10 with BufferedImageLuminanceSource

use of com.google.zxing.BufferedImageLuminanceSource in project zxing by zxing.

the class PDF417BlackBox4TestCase method testPDF417BlackBoxCountingResults.

private void testPDF417BlackBoxCountingResults(boolean assertOnFailure) throws IOException {
    assertFalse(testResults.isEmpty());
    Map<String, List<Path>> imageFiles = getImageFileLists();
    int testCount = testResults.size();
    int[] passedCounts = new int[testCount];
    int[] tryHarderCounts = new int[testCount];
    Path testBase = getTestBase();
    for (Entry<String, List<Path>> testImageGroup : imageFiles.entrySet()) {
        log.fine(String.format("Starting Image Group %s", testImageGroup.getKey()));
        String fileBaseName = testImageGroup.getKey();
        String expectedText;
        Path expectedTextFile = testBase.resolve(fileBaseName + ".txt");
        if (Files.exists(expectedTextFile)) {
            expectedText = readFileAsString(expectedTextFile, StandardCharsets.UTF_8);
        } else {
            expectedTextFile = testBase.resolve(fileBaseName + ".bin");
            assertTrue(Files.exists(expectedTextFile));
            expectedText = readFileAsString(expectedTextFile, StandardCharsets.ISO_8859_1);
        }
        for (int x = 0; x < testCount; x++) {
            List<Result> results = new ArrayList<>();
            for (Path imageFile : testImageGroup.getValue()) {
                BufferedImage image = ImageIO.read(imageFile.toFile());
                float rotation = testResults.get(x).getRotation();
                BufferedImage rotatedImage = rotateImage(image, rotation);
                LuminanceSource source = new BufferedImageLuminanceSource(rotatedImage);
                BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
                try {
                    results.addAll(Arrays.asList(decode(bitmap, false)));
                } catch (ReaderException ignored) {
                // ignore
                }
            }
            Collections.sort(results, new Comparator<Result>() {

                @Override
                public int compare(Result arg0, Result arg1) {
                    PDF417ResultMetadata resultMetadata = getMeta(arg0);
                    PDF417ResultMetadata otherResultMetadata = getMeta(arg1);
                    return resultMetadata.getSegmentIndex() - otherResultMetadata.getSegmentIndex();
                }
            });
            StringBuilder resultText = new StringBuilder();
            String fileId = null;
            for (Result result : results) {
                PDF417ResultMetadata resultMetadata = getMeta(result);
                assertNotNull("resultMetadata", resultMetadata);
                if (fileId == null) {
                    fileId = resultMetadata.getFileId();
                }
                assertEquals("FileId", fileId, resultMetadata.getFileId());
                resultText.append(result.getText());
            }
            assertEquals("ExpectedText", expectedText, resultText.toString());
            passedCounts[x]++;
            tryHarderCounts[x]++;
        }
    }
    // Print the results of all tests first
    int totalFound = 0;
    int totalMustPass = 0;
    int numberOfTests = imageFiles.keySet().size();
    for (int x = 0; x < testResults.size(); x++) {
        TestResult testResult = testResults.get(x);
        log.info(String.format("Rotation %d degrees:", (int) testResult.getRotation()));
        log.info(String.format(" %d of %d images passed (%d required)", passedCounts[x], numberOfTests, testResult.getMustPassCount()));
        log.info(String.format(" %d of %d images passed with try harder (%d required)", tryHarderCounts[x], numberOfTests, testResult.getTryHarderCount()));
        totalFound += passedCounts[x] + tryHarderCounts[x];
        totalMustPass += testResult.getMustPassCount() + testResult.getTryHarderCount();
    }
    int totalTests = numberOfTests * testCount * 2;
    log.info(String.format("Decoded %d images out of %d (%d%%, %d required)", totalFound, totalTests, totalFound * 100 / totalTests, totalMustPass));
    if (totalFound > totalMustPass) {
        log.warning(String.format("+++ Test too lax by %d images", totalFound - totalMustPass));
    } else if (totalFound < totalMustPass) {
        log.warning(String.format("--- Test failed by %d images", totalMustPass - totalFound));
    }
    // Then run through again and assert if any failed
    if (assertOnFailure) {
        for (int x = 0; x < testCount; x++) {
            TestResult testResult = testResults.get(x);
            String label = "Rotation " + testResult.getRotation() + " degrees: Too many images failed";
            assertTrue(label, passedCounts[x] >= testResult.getMustPassCount());
            assertTrue("Try harder, " + label, tryHarderCounts[x] >= testResult.getTryHarderCount());
        }
    }
}