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#include <iostream> #include <opencv2/opencv.hpp> #include <zxing/BarcodeFormat.h> #include <zxing/DecodeHints.h> #include <zxing/Reader.h> #include <zxing/MultiFormatReader.h> #include <zxing/BinaryBitmap.h> #include <zxing/HybridBinarizer.h> #include <zxing/BitMatrix.h> #include <zxing/Result.h> using namespace std; using namespace cv; using namespace zxing; int main() { // Load the image containing the barcode string imagePath = "barcode.png"; Mat image = imread(imagePath, IMREAD_GRAYSCALE); if (image.empty()) { cerr << "Error loading image." << endl; return 1; } // Convert Mat image to zxing::BitMatrix int width = image.cols; int height = image.rows; vector<uchar> imgData(image.data, image.data + (width * height)); Ref<BitMatrix> bitMatrix = Ref<BitMatrix>(new BitMatrix(width, height)); for (int y = 0; y < height; ++y) { for (int x = 0; x < width; ++x) { uchar pixel = imgData[y * width + x]; bitMatrix->set(x, y, pixel < 128); } } // Create a BinaryBitmap from BitMatrix Ref<BinaryBitmap> binaryBitmap = Ref<BinaryBitmap>(new BinaryBitmap(Ref<HybridBinarizer>(new HybridBinarizer(bitMatrix)))); // Create a reader and decode the barcode MultiFormatReader reader; DecodeHints hints; hints.setTryHarder(true); Ref<Result> result = reader.decode(binaryBitmap, hints); // Output the result if (result) { cout << "Barcode text: " << result->getText()->getText() << endl; } else { cout << "No barcode found." << endl; } return 0; } |
Explanation
- Include Libraries:
#include <iostream>: For input and output operations.#include <opencv2/opencv.hpp>: For image processing using OpenCV.- ZXing headers for barcode processing.
- Load the Image:
Mat image = imread(imagePath, IMREAD_GRAYSCALE);: Load the image in grayscale mode using OpenCV.
- Convert OpenCV Image to ZXing BitMatrix:
- Extract pixel data from the
cv::Matobject and convert it into a ZXingBitMatrix. - Pixels are converted into a binary format where
pixel < 128is treated as black, and others as white.
- Extract pixel data from the
- Create BinaryBitmap:
BinaryBitmapis constructed using aHybridBinarizerwhich processes theBitMatrix.
- Decode the Barcode:
- Create a
MultiFormatReaderto decode the barcode from theBinaryBitmap. - Set decoding hints to improve recognition.
- Create a
- Output the Result:
- If the barcode is successfully decoded, output the text; otherwise, indicate that no barcode was found.
Notes:
- ZXing Setup: Ensure ZXing and OpenCV libraries are correctly linked and included in your project.
- Image Path: Replace
"barcode.png"with the path to your barcode image. - Library Dependencies: Ensure ZXing and OpenCV libraries are installed and configured in your build system.