The current conventional airport road surface disease detection method mainly obtains disease information data and analyzes them, which leads to poor detection accuracy due to the lack of denoising of the disease images. In this regard, the visualization detection method of airport road surface disease based on BIM and CCD imaging is proposed. Combining the BIM forward model and CCD imaging technology to collect the disease information, the image is denoised and filtered, and the edge detection algorithm is optimized. The experimental results show that the proposed detection method has a high AP value and a more desirable detection accuracy.

Syntactic analysis is the core technology of natural language processing and it is the cornerstone for further linguistic analysis. This paper, first introduces the basic grammatical system and summary the technology of current parsing. Then analysis the characteristics of probabilistic context-free grammars deep and introduce the method of improving for probabilistic context-free. The last we point the difficulty of Chinese parsing.