python识别DM二维码比较简单,只需要pylibdmtx 库即可,pylibdmtx 库包含了libdmtx的功能,python代码如下。
# -*-coding:utf-8 -*-
import time
import cv2
from pylibdmtx import pylibdmtx
# 加载图片
image = cv2.imread('1.bmp')
t0 = time.time()
# 解析二维码
all_barcode_info = pylibdmtx.decode(image, timeout=500, max_count=1)
print(all_barcode_info)
print(time.time() - t0)
print(all_barcode_info[0].data.decode("utf-8"))
用c++实现DM二维码识别相对复杂,需要用到libdmtx.lib 和dmtx.h头文件。编译libdmtx.lib比较复杂,所以我很贴心的附上X86和X64环境下的libdmtx.lib、libdmtx.dll链接库,以及dmtx.h。百度网盘链接为:https://pan.baidu.com/s/1e0DK7PiAFAIzLwempsNacg 提取码:ckux
C++实现代码如下:
#include
#include
#include "dmtx.h"
using namespace cv;
using namespace std;
int main()
{
DmtxMessage* msg;
DmtxRegion* reg;
Mat dst;
double time = getTickCount();
Mat src = imread("1.jpg");
if (!src.data)
{
cout << "Load image failed!" << endl;
}
cvtColor(src, src, COLOR_BGR2GRAY);
DmtxImage* image;
image = dmtxImageCreate(src.data, src.cols, src.rows, DmtxPack8bppK);//注意图片类型
DmtxDecode* dec = dmtxDecodeCreate(image, 1);//解码
reg = dmtxRegionFindNext(dec, NULL); //获取二维码位置,第二个参数表示扫描时间上限,达到时间上限退出扫描
if (reg != NULL) {
msg = dmtxDecodeMatrixRegion(dec, reg, 1);//解码信息
if (msg != NULL)
{
cout << msg->output << endl;
dmtxMessageDestroy(&msg);
}
dmtxRegionDestroy(®);
}
else
{
cout << "Get region failed!" << endl;
}
dmtxDecodeDestroy(&dec);
dmtxImageDestroy(&image);
time = (getTickCount() - time) / getTickFrequency();
cout << "the processing time is :" << time << endl;
cin.get();
return 0;
}
zxing是一个比较知名的二维码识别开源库。直接抄作业吧,VS工程以及所有和zxing相关的依赖项均在此链接:
链接:https://pan.baidu.com/s/1_aQ-EqaQ4TZdEefO0AF9Qg
提取码:o72j
#include "ReadBarcode.h"
#include "TextUtfEncoding.h"
#include
#include
#include
#include
#include
#include
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
using namespace ZXing;
static void PrintUsage(const char* exePath)
{
std::cout << "Usage: " << exePath << " [-fast] [-norotate] [-format ] [-ispure] \n"
<< " -fast Skip some lines/pixels during detection (faster)\n"
<< " -norotate Don't try rotated image during detection (faster)\n"
<< " -format Only detect given format(s) (faster)\n"
<< " -ispure Assume the image contains only a 'pure'/perfect code (faster)\n"
<< "\n"
<< "Supported formats are:\n";
for (auto f : BarcodeFormats::all()) {
std::cout << " " << ToString(f) << "\n";
}
std::cout << "Formats can be lowercase, with or without '-', separated by ',' and/or '|'\n";
}
static bool ParseOptions(int argc, char* argv[], DecodeHints* hints, std::string* filePath)
{
for (int i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-fast") == 0) {
hints->setTryHarder(false);
}
else if (strcmp(argv[i], "-norotate") == 0) {
hints->setTryRotate(false);
}
else if (strcmp(argv[i], "-ispure") == 0) {
hints->setIsPure(true);
hints->setBinarizer(Binarizer::FixedThreshold);
}
else if (strcmp(argv[i], "-format") == 0) {
if (++i == argc)
return false;
try {
hints->setFormats(BarcodeFormatsFromString(argv[i]));
}
catch (const std::exception& e) {
std::cerr << e.what() << "\n";
return false;
}
}
else {
*filePath = argv[i];
}
}
return !filePath->empty();
}
std::ostream& operator<<(std::ostream& os, const Position& points) {
for (const auto& p : points)
os << p.x << "x" << p.y << " ";
return os;
}
int main(int argc, char* argv[])
{
DecodeHints hints;
//自己修改二维码路径
std::string filePath = "C:/Users/admin/Desktop/DM_Rec/imgs/7.jpg";
if (!ParseOptions(argc, argv, &hints, &filePath)) {
PrintUsage(argv[0]);
return -1;
}
int width, height, channels;
clock_t startTime, endTime;
std::unique_ptr<stbi_uc, void(*)(void*)> buffer(stbi_load(filePath.c_str(), &width, &height, &channels, 4), stbi_image_free);
if (buffer == nullptr) {
std::cerr << "Failed to read image: " << filePath << "\n";
return -1;
}
startTime = clock();//计时开始
auto result = ReadBarcode({ buffer.get(), width, height, ImageFormat::RGBX }, hints);
endTime = clock();//计时结束
std::cout << "Text: \"" << TextUtfEncoding::ToUtf8(result.text()) << "\"\n"
<< "Format: " << ToString(result.format()) << "\n"
<< "Position: " << result.position() << "\n"
<< "Rotation: " << result.orientation() << " deg\n"
<< "Error: " << ToString(result.status()) << "\n";
std::cout << "The run time is: " << (double)(endTime - startTime) / CLOCKS_PER_SEC << "s" << std::endl;
std::map<ResultMetadata::Key, const char*> keys = { {ResultMetadata::ERROR_CORRECTION_LEVEL, "EC Level: "},
{ResultMetadata::SUGGESTED_PRICE, "Price: "},
{ResultMetadata::ISSUE_NUMBER, "Issue #: "},
{ResultMetadata::POSSIBLE_COUNTRY, "Country: "},
{ResultMetadata::UPC_EAN_EXTENSION, "Extension:"} };
for (auto key : keys) {
auto value = TextUtfEncoding::ToUtf8(result.metadata().getString(key.first));
if (value.size())
std::cout << key.second << value << "\n";
}
return static_cast<int>(result.status());
}