【摘要】 针对复杂背景下的PDF417条码,提出一种合理的条码预处理方法:首先对条码进行二值化处理,将条码和复杂背景分离出来;然后通过Hough变换将条码旋转至水平,通过投影确定出条码的边界;最后利用中值滤波除去条码图像中妨碍正确解码的噪音。更多还原

【Abstract】 The authors put forward a logical method to pre-processing the barcode image of PDF417 in complicated background.First of all,the barcode was separated from the complicated background with Binary,and then rotated to horizontal by Hough transform,the border of the barcode was ascertained with Projection algorithm.Finally,using the median filter to remove the noise which prevent the correct decoding.更多还原