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Add --crop=left,top,width,height arg

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git-svn-id: https://zxing.googlecode.com/svn/trunk@1269 59b500cc-1b3d-0410-9834-0bbf25fbcc57
This commit is contained in:
srowen 2010-03-31 18:22:32 +00:00
parent 7410fd3082
commit 26a63fc183
1 changed files with 28 additions and 9 deletions
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37
javase/src/com/google/zxing/client/j2se/CommandLineRunner.java
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@ -70,6 +70,7 @@ public final class CommandLineRunner {
boolean productsOnly = false; boolean productsOnly = false;
boolean dumpResults = false; boolean dumpResults = false;
boolean dumpBlackPoint = false; boolean dumpBlackPoint = false;
int[] crop = null;
for (String arg : args) { for (String arg : args) {
if ("--try_harder".equals(arg)) { if ("--try_harder".equals(arg)) {
tryHarder = true; tryHarder = true;
@ -81,6 +82,12 @@ public final class CommandLineRunner {
dumpResults = true; dumpResults = true;
} else if ("--dump_black_point".equals(arg)) { } else if ("--dump_black_point".equals(arg)) {
dumpBlackPoint = true; dumpBlackPoint = true;
} else if (arg.startsWith("--crop")) {
crop = new int[4];
String[] tokens = arg.substring(7).split(",");
for (int i = 0; i < crop.length; i++) {
crop[i] = Integer.parseInt(tokens[i]);
}
} else if (arg.startsWith("-")) { } else if (arg.startsWith("-")) {
System.err.println("Unknown command line option " + arg); System.err.println("Unknown command line option " + arg);
printUsage(); printUsage();
@ -91,7 +98,7 @@ public final class CommandLineRunner {
Hashtable<DecodeHintType, Object> hints = buildHints(tryHarder, pureBarcode, productsOnly); Hashtable<DecodeHintType, Object> hints = buildHints(tryHarder, pureBarcode, productsOnly);
for (String arg : args) { for (String arg : args) {
if (!arg.startsWith("--")) { if (!arg.startsWith("--")) {
decodeOneArgument(arg, hints, dumpResults, dumpBlackPoint); decodeOneArgument(arg, hints, dumpResults, dumpBlackPoint, crop);
} }
} }
} }
@ -128,13 +135,18 @@ public final class CommandLineRunner {
System.err.println("Decode barcode images using the ZXing library\n"); System.err.println("Decode barcode images using the ZXing library\n");
System.err.println("usage: CommandLineRunner { file | dir | url } [ options ]"); System.err.println("usage: CommandLineRunner { file | dir | url } [ options ]");
System.err.println(" --try_harder: Use the TRY_HARDER hint, default is normal (mobile) mode"); System.err.println(" --try_harder: Use the TRY_HARDER hint, default is normal (mobile) mode");
System.err.println(" --pure_barcode: Input image is a pure monochrome barcode image, not a photo");
System.err.println(" --products_only: Only decode the UPC and EAN families of barcodes"); System.err.println(" --products_only: Only decode the UPC and EAN families of barcodes");
System.err.println(" --dump_results: Write the decoded contents to input.txt"); System.err.println(" --dump_results: Write the decoded contents to input.txt");
System.err.println(" --dump_black_point: Compare black point algorithms as input.mono.png"); System.err.println(" --dump_black_point: Compare black point algorithms as input.mono.png");
System.err.println(" --crop=left,top,width,height: Only examine cropped region of input image(s)");
} }
private static void decodeOneArgument(String argument, Hashtable<DecodeHintType, Object> hints, private static void decodeOneArgument(String argument,
boolean dumpResults, boolean dumpBlackPoint) throws IOException, Hashtable<DecodeHintType, Object> hints,
boolean dumpResults,
boolean dumpBlackPoint,
int[] crop) throws IOException,
URISyntaxException { URISyntaxException {
File inputFile = new File(argument); File inputFile = new File(argument);
@ -152,7 +164,7 @@ public final class CommandLineRunner {
if (filename.contains(".mono.png")) { if (filename.contains(".mono.png")) {
continue; continue;
} }
Result result = decode(input.toURI(), hints, dumpBlackPoint); Result result = decode(input.toURI(), hints, dumpBlackPoint, crop);
if (result != null) { if (result != null) {
successful++; successful++;
if (dumpResults) { if (dumpResults) {
@ -164,13 +176,13 @@ public final class CommandLineRunner {
System.out.println("\nDecoded " + successful + " files out of " + total + System.out.println("\nDecoded " + successful + " files out of " + total +
" successfully (" + (successful * 100 / total) + "%)\n"); " successfully (" + (successful * 100 / total) + "%)\n");
} else { } else {
Result result = decode(inputFile.toURI(), hints, dumpBlackPoint); Result result = decode(inputFile.toURI(), hints, dumpBlackPoint, crop);
if (dumpResults) { if (dumpResults) {
dumpResult(inputFile, result); dumpResult(inputFile, result);
} }
} }
} else { } else {
decode(new URI(argument), hints, dumpBlackPoint); decode(new URI(argument), hints, dumpBlackPoint, crop);
} }
} }
@ -193,8 +205,10 @@ public final class CommandLineRunner {
} }
} }
private static Result decode(URI uri, Hashtable<DecodeHintType, Object> hints, private static Result decode(URI uri,
boolean dumpBlackPoint) throws IOException { Hashtable<DecodeHintType, Object> hints,
boolean dumpBlackPoint,
int[] crop) throws IOException {
BufferedImage image; BufferedImage image;
try { try {
image = ImageIO.read(uri.toURL()); image = ImageIO.read(uri.toURL());
@ -206,7 +220,12 @@ public final class CommandLineRunner {
return null; return null;
} }
try { try {
LuminanceSource source = new BufferedImageLuminanceSource(image); LuminanceSource source;
if (crop == null) {
source = new BufferedImageLuminanceSource(image);
} else {
source = new BufferedImageLuminanceSource(image, crop[0], crop[1], crop[2], crop[3]);
}
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
if (dumpBlackPoint) { if (dumpBlackPoint) {
dumpBlackPoint(uri, image, bitmap); dumpBlackPoint(uri, image, bitmap);