古陶瓷纹饰数字化过程中图像边缘提取的Matlab算子选择

Selection of Matlab Operators Detected from Image Edge in the Digital Process of Ancient Ceramic Decoration

通过古陶瓷表面的纹饰特征来对古陶瓷器具进行断源断代是我国古陶瓷鉴定领域的传统方法之一。使用Matlab软件对古陶瓷纹饰进行数字化处理,可以发掘出更多古陶瓷纹饰所蕴含的深层次的数字信息,有助于提高古陶瓷鉴定精度。在对古陶瓷纹饰进行数字化的过程中,边缘提取的算子选择决定了图片的清晰度。本文采用不同算子对古陶瓷样品的纹饰进行边缘提取处理,对比其处理效果,研究发现Sobel算子可作为古陶瓷纹饰边缘提取的最优算子,为我们后续利用数字化技术对古陶瓷的纹饰特征进行研究和探索打下了坚实的基础。

The confirmation of origin and period of ancient ceramics through their decorative features is one of traditional identification methods in the field of ancient ceramics. More underlying digital information can be discovered using Matlab software to digitize the ancient ceramic decoration, which contributes to improve the accuracy of ancient ceramic identification. In the process of digitalization of ancient ceramics decoration, the operators selected from image edge to select determine the clarity of the picture. Different operators were adopted for edge extraction processing of decoration of ancient ceramic samples. Compared the treatment effect, it was found that Sobel operator could be regarded as the optimal operator for edge extraction, which is laying a foundation for the research and investigation of characteristics of ancient ceramic decoration by the digital technology.