摘要
某些特殊涂料可以允许特定波段的红外光透过,而阻止可见光透过,因此可以利用这个特点,用红外成像来检测和判断以实现防伪防篡改的目的。由于从红外摄像机中提取到的图像在转换成灰度图像后存在噪声、边缘模糊等缺陷,需进行图像增强才能提高后续图像处理的精确度。此外,在雨雪天、雾霾天气中采集到的红外图像也会出现模糊等问题。运用锐化滤波法,通过微分计算和处理,可使图像的边缘信息突出,便于人眼和机器的识别,能实现防伪识别和处理。
Some special coatings can allow specific ban infrared light through and absorb the visible light. Uses this feature, combining with infrared imaging to detect, judge and realize the purpose of anti-counterfeiting tamper-proof. But there are some defects existing in the gray con- verted images which extracted from infrared cameras, like noise, edge blur and so on. In order to improve the accuracy of the subsequent image processing, image enhancement processing is needed. In addition, infrared images collected from the rainy, snowy day and foggy weather also can appear fuzzy. The sharpen filter, uses differential calculation and processing, makes the edge information of image out- standing. Both human and machine can have a good recognition of it. Realizes anti-counterfeiting recognition and processing.
关键词
红外防伪标签
红外图像增强
锐化滤波
Anti-Counterfeiting Labels of Infrared
Infrared Image Enhancement
Sharpen Filter
