中文说明：
基于MATLAB的条形码识别。带GUI可视化用户操作界面。读取条形码，经过一系列预处理，如灰度化，去噪，直方图增强，中值滤波，二值化，腐蚀，识别等。可识别20多张条形码图片，另外可定制二维码的识别，二维码可自定义生成内容，生成二维码，然后嵌入数字水印进行加密传输，接收方提取水印的二维码，识别。
English Description：
Bar code recognition based on MATLAB. Visual user interface with GUI. Read bar code, after a series of preprocessing, such as graying, denoising, histogram enhancement, median filtering, binarization, corrosion, recognition and so on. It can recognize more than 20 bar code images. In addition, it can customize the recognition of two-dimensional code. The two-dimensional code can customize the generated content, generate two-dimensional code, and then embed the digital watermark for encrypted transmission. The receiver extracts the two-dimensional code of the watermark for recognition.