Linux Opencv+zBar二维码识别

基于Linux zbar二维码识别库编译和Linux Opencv编译安装基础上，实现Opencv+zbar实现二维码、条形码识别

1. 代码结构

eric@eric-PC:~/Documents/work/linux-c/opencv$ tree 
.
├── Makefile
├── picture
│   ├── 2Code.png
│   ├── barCode.jpg
│   ├── QRcode.jpg
│   └── test.jpg
└── src
    └── main.cpp

2 directories, 6 files

QRcode.jpg：二维码
barCode.jpg：条形码
2Code.png，二维码+条形码

2. main.cpp

#include "iostream"
#include "opencv2/opencv.hpp"
#include "zbar.h"  

using namespace std;
using namespace cv;
using namespace zbar;

#define WINDOW_NAME "clor"
#define WINDOW_GARY_NAME "gary"

int main()
{
    
    
	namedWindow(WINDOW_NAME, WINDOW_AUTOSIZE);
	namedWindow(WINDOW_GARY_NAME, WINDOW_AUTOSIZE);

	// 加载二维码图片
	Mat image;
	// image = imread("./picture/test.jpg");
	image = imread("./picture/QRcode.jpg");
	// image = imread("./picture/barCode.jpg");
	// image = imread("./picture/2Code.png");
	// image = Mat(240,320,CV_8UC3,Scalar(0,255,0));
	
	cout << "---------------- 图像参数 ------------------"<<endl;
	// 标志位
	cout << "flags:" << image.flags << endl;
	// 图像尺寸
	cout << "size:" << image.size << endl;
	// 列宽
	cout << "clos:" << image.cols<<endl;
	// 行高
	cout << "rows:" << image.rows << endl;
	// 维度
	cout << "dims:" << image.dims << endl;
	
	cout << "------------------------------------------"<<endl;

	imshow(WINDOW_NAME,image);

	// 灰度转换
	Mat imageGray;
	cvtColor(image, imageGray, COLOR_RGB2GRAY);
	imshow(WINDOW_GARY_NAME,imageGray);

	// 获取二进制数据
	int width = imageGray.cols;
	int height = imageGray.rows;
	uchar *raw = (uchar *)imageGray.data;
	Image imageZbar = Image(width, height, "Y800", raw, width * height);

	// 配置扫描器,开始扫描
	ImageScanner scanner;
	scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
	scanner.scan(imageZbar);    
	
    // 扫描结果打印
	if (imageZbar.symbol_begin() == imageZbar.symbol_end())
	{
    
    
		cout << "识别错误！" << endl;
	}
	// 遍历所有识别到的二维码后者条形码
	Image::SymbolIterator symbol = imageZbar.get_symbols();
	for (; symbol != imageZbar.symbol_end(); ++symbol)
	{
    
    
		cout << "类型：\t" << symbol->get_type_name() << endl;
		cout << "条码：\t" << symbol->get_data() << endl << endl;
	}
	// 释放资源
	imageZbar.set_data(NULL, 0);

	waitKey(0);

	return 0;
}

3. Makefile

######################################
# eric
######################################

## 指定编译工具
CC	= gcc
CPP	= g++
RM	= rm -rf

## 源文件路径(默认检索3层)
SRC_PATH	:= ./src
DIRS	:= $(shell find $(SRC_PATH) -maxdepth 3 -type d)

## 目标文件名称
TARGET	:= main

## 获取所有.c文件路径
SRCS	+= $(foreach dir, $(DIRS), $(wildcard $(dir)/*.c)) 
SRCPPS	+= $(foreach dir, $(DIRS), $(wildcard $(dir)/*.cpp))

## 所有对应目标文件
OBJS	:= $(SRCS:.c=.o) $(SRCPPS:.cpp=.o)

## 所有用到的库
LIBS	:= pthread m  # mbedtls mbedcrypto mbedx509

## 指定头文件路径
INCLUDE_PATH	:= . $(DIRS) #/usr/local/include/opencv4/

## 指定库文件路径
LIB_PATH	:= /lib /usr/local/lib #./libmbedtls

## 编译参数初始化
CFLAGS		:= -g -O3 -pthread #-Wall

## 加载头文件路径
CFLAGS		+= $(foreach dir, $(INCLUDE_PATH), -I$(dir))
CFLAGS 		+=  `pkg-config --cflags --libs opencv` 
CFLAGS 		+=  `pkg-config --cflags --libs zbar` 

## 加载库文件路径
LDFLAGS		+= $(foreach libdir, $(LIB_PATH), -L$(libdir))

## 加载库文件
LDFLAGS 	+= $(foreach lib, $(LIBS), -l$(lib))


.PHONY:all

all: $(TARGET) 
 
$(TARGET) :$(OBJS)
	@$(CPP) $(CFLAGS) -o $@ $(OBJS) $(LDFLAGS)
	@#$(RM) $(OBJS)
	@echo =============================
	@echo $(TARGET) ok

%.o	: %.c
	@echo srcs=$(SRCS)
	@echo $@...
	@$(CC) -c $(CFLAGS) $< -o $@

%.o	: %.cpp
	@echo srcpps=$(SRCPPS)
	@echo LDFLAGS=$(LDFLAGS)
	@echo OBJS=$(OBJS)
	@echo $@...
	@$(CPP) -c $(CFLAGS) $< -o $@ 

# %.o	: %.S
#     $(CC) -c $(CFLAGS) $< -o $@
 
.PHONY:clean
clean:
	$(RM) $(OBJS) $(TARGET)

4. 编译&测试

eric@eric-PC:~/Documents/work/linux-c/opencv$ make 
srcpps= ./src/main.cpp
LDFLAGS= -L/lib -L/usr/local/lib -lpthread -lm
OBJS= ./src/main.o
src/main.o...
=============================
main ok
eric@eric-PC:~/Documents/work/linux-c/opencv$ ./main 

(clor:130149): Gtk-WARNING **: 13:53:08.378: 无法在模块路径中找到主题引擎：“adwaita”，

(clor:130149): Gtk-WARNING **: 13:53:08.378: 无法在模块路径中找到主题引擎：“adwaita”，
---------------- 图像参数 ------------------
flags:1124024336
size:260 x 260
clos:260
rows:260
dims:2
------------------------------------------
类型：  QR-Code
条码：  www.baidu.com

eric@eric-PC:~/Documents/work/linux-c/opencv$

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