Application of FFT Algorithm in Digital Protection System of Building

Ancient architecture is the essence of Chinese traditional culture and is the star in the long history. Effective protection of ancient buildings is a tribute to traditional culture. In the conservation of ancient buildings, traditional measurement and conservation methods can hardly match the needs of the ever-changing times. The application of digital technology can effectively solve the problem of accurate measurement and preservation of information data, so that the relevant information is more accurate, safer and more comprehensive records. With the popularization of computer technology, many intelligent optimization algorithms have gradually penetrated into the study of ancient building preservation and renewal. The pressure on the conservation and restoration of ancient buildings is increasing, and people are eagerly seeking new algorithms that are more robust, fast, efficient, and general. In this paper, we focus on improving the traditional genetic algorithm and combine the ideas of FFT (Fast Fourier Transform) algorithm to form a unique and improved algorithm, which is applicable to most of the ancient buildings. The experimental results of this paper show that the data collection efficiency is improved by 69% and the data processing efficiency is improved by at least 67% after the optimization of FFT algorithm, and the accuracy of database construction is at least 14% higher than that of the traditional method. It can be seen that the digitization method combined with the FFT algorithm has greater advantages than the traditional method, and will be more accurate and efficient for the conservation of ancient buildings.