package com.google.zxing.client.j2se;
+import com.google.zxing.BlackPointEstimationMethod;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MonochromeBitmapSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
+import com.google.zxing.client.result.ParsedResult;
+import com.google.zxing.client.result.ResultParser;
+import com.google.zxing.common.BitArray;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
-import java.io.IOException;
import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.charset.Charset;
import java.util.Hashtable;
/**
* request that hint. The raw text of each barcode is printed, and when running against directories,
* summary statistics are also displayed.</p>
*
- * @author srowen@google.com (Sean Owen), dswitkin@google.com (Daniel Switkin)
+ * @author Sean Owen
+ * @author dswitkin@google.com (Daniel Switkin)
*/
public final class CommandLineRunner {
public static void main(String[] args) throws Exception {
Hashtable<DecodeHintType, Object> hints = null;
+ boolean dumpResults = false;
+ boolean dumpBlackPoint = false;
for (String arg : args) {
if ("--try_harder".equals(arg)) {
hints = new Hashtable<DecodeHintType, Object>(3);
hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
+ } else if ("--dump_results".equals(arg)) {
+ dumpResults = true;
+ } else if ("--dump_black_point".equals(arg)) {
+ dumpBlackPoint = true;
} else if (arg.startsWith("--")) {
System.out.println("Unknown command line option " + arg);
return;
}
for (String arg : args) {
if (!arg.startsWith("--")) {
- decodeOneArgument(arg, hints);
+ decodeOneArgument(arg, hints, dumpResults, dumpBlackPoint);
}
}
}
- private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints)
- throws Exception {
+ private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints,
+ boolean dumpResults, boolean dumpBlackPoint) throws IOException,
+ URISyntaxException {
+
File inputFile = new File(argument);
if (inputFile.exists()) {
if (inputFile.isDirectory()) {
if (filename.startsWith(".") || filename.endsWith(".txt")) {
continue;
}
- if (decode(input.toURI(), hints)) {
+ // Skip the results of dumping the black point.
+ if (filename.contains(".mono.png")) {
+ continue;
+ }
+ Result result = decode(input.toURI(), hints, dumpBlackPoint);
+ if (result != null) {
successful++;
+ if (dumpResults) {
+ dumpResult(input, result);
+ }
}
total++;
}
System.out.println("\nDecoded " + successful + " files out of " + total +
" successfully (" + (successful * 100 / total) + "%)\n");
} else {
- decode(inputFile.toURI(), hints);
+ Result result = decode(inputFile.toURI(), hints, dumpBlackPoint);
+ if (dumpResults) {
+ dumpResult(inputFile, result);
+ }
}
} else {
- decode(new URI(argument), hints);
+ decode(new URI(argument), hints, dumpBlackPoint);
}
}
- private static boolean decode(URI uri, Hashtable<DecodeHintType, Object> hints) throws IOException {
+ private static void dumpResult(File input, Result result) throws IOException {
+ String name = input.getAbsolutePath();
+ int pos = name.lastIndexOf('.');
+ if (pos > 0) {
+ name = name.substring(0, pos);
+ }
+ File dump = new File(name + ".txt");
+ writeStringToFile(result.getText(), dump);
+ }
+
+ private static void writeStringToFile(String value, File file) throws IOException {
+ Writer out = new OutputStreamWriter(new FileOutputStream(file), Charset.forName("UTF8"));
+ try {
+ out.write(value);
+ } finally {
+ out.close();
+ }
+ }
+
+ private static Result decode(URI uri, Hashtable<DecodeHintType, Object> hints,
+ boolean dumpBlackPoint) throws IOException {
BufferedImage image;
try {
image = ImageIO.read(uri.toURL());
}
if (image == null) {
System.err.println(uri.toString() + ": Could not load image");
- return false;
+ return null;
}
try {
MonochromeBitmapSource source = new BufferedImageMonochromeBitmapSource(image);
+ if (dumpBlackPoint) {
+ dumpBlackPoint(uri, image, source);
+ }
Result result = new MultiFormatReader().decode(source, hints);
- System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() + "):\n" +
- result.getText());
- return true;
+ ParsedResult parsedResult = ResultParser.parseResult(result);
+ System.out.println(uri.toString() + " (format: " + result.getBarcodeFormat() +
+ ", type: " + parsedResult.getType() + "):\nRaw result:\n" + result.getText() +
+ "\nParsed result:\n" + parsedResult.getDisplayResult());
+ return result;
} catch (ReaderException e) {
System.out.println(uri.toString() + ": No barcode found");
- return false;
+ return null;
+ }
+ }
+
+ // Writes out a single PNG which is three times the width of the input image, containing from left
+ // to right: the original image, the row sampling monochrome version, and the 2D sampling
+ // monochrome version.
+ // TODO: Currently fails on URLs. Would be nice to handle gracefully and write the output to pwd.
+ private static void dumpBlackPoint(URI uri, BufferedImage image, MonochromeBitmapSource source) {
+ String inputName = uri.getPath();
+ if (inputName.contains(".mono.png")) {
+ return;
+ }
+
+ int width = source.getWidth();
+ int height = source.getHeight();
+ int stride = width * 3;
+ int[] pixels = new int[stride * height];
+
+ // The original image
+ int[] argb = new int[width];
+ for (int y = 0; y < height; y++) {
+ image.getRGB(0, y, width, 1, argb, 0, width);
+ System.arraycopy(argb, 0, pixels, y * stride, width);
+ }
+ argb = null;
+
+ // Row sampling
+ BitArray row = new BitArray(width);
+ for (int y = 0; y < height; y++) {
+ try {
+ source.estimateBlackPoint(BlackPointEstimationMethod.ROW_SAMPLING, y);
+ } catch (ReaderException e) {
+ // If the row histogram failed, draw a red line and keep going
+ int offset = y * stride + width;
+ for (int x = 0; x < width; x++) {
+ pixels[offset + x] = 0xffff0000;
+ }
+ continue;
+ }
+ source.getBlackRow(y, row, 0, width);
+ int offset = y * stride + width;
+ for (int x = 0; x < width; x++) {
+ if (row.get(x)) {
+ pixels[offset + x] = 0xff000000;
+ } else {
+ pixels[offset + x] = 0xffffffff;
+ }
+ }
+ }
+
+ // 2D sampling
+ try {
+ source.estimateBlackPoint(BlackPointEstimationMethod.TWO_D_SAMPLING, 0);
+ for (int y = 0; y < height; y++) {
+ source.getBlackRow(y, row, 0, width);
+ int offset = y * stride + width * 2;
+ for (int x = 0; x < width; x++) {
+ if (row.get(x)) {
+ pixels[offset + x] = 0xff000000;
+ } else {
+ pixels[offset + x] = 0xffffffff;
+ }
+ }
+ }
+ } catch (ReaderException e) {
+ }
+
+ // Write the result
+ BufferedImage result = new BufferedImage(stride, height, BufferedImage.TYPE_INT_ARGB);
+ result.setRGB(0, 0, stride, height, pixels, 0, stride);
+
+ String resultName = inputName;
+ int pos = resultName.lastIndexOf('.');
+ if (pos > 0) {
+ resultName = resultName.substring(0, pos);
+ }
+ resultName += ".mono.png";
+ try {
+ OutputStream outStream = new FileOutputStream(resultName);
+ ImageIO.write(result, "png", outStream);
+ } catch (FileNotFoundException e) {
+ System.out.println("Could not create " + resultName);
+ } catch (IOException e) {
+ System.out.println("Could not write to " + resultName);
}
}
projects / zxing.git / blobdiff