Research on Teeth Positioning Based on Wavelet Transform and Edge Detection

Human Identification from Dental X-Ray Images is a new Biometric Identification technology based on the use of modern digital image processing technology. Tooth positioning is the initial step in the individual identification system using dental X-ray image, and its main purpose is to find the accurate position of tooth in the high-resolution X-ray images, which can reduce data redundancy and provide support for the establishment of the dental images database and subsequent processing. Automated positioning and cropping of dental X-ray records is a challenging problem due to the heterogeneity of dental records. This paper proposed an algorithm to process the dental X-ray images using wavelet transform and edge detection techniques, respectively in horizontal and vertical directions to find the position of tooth area. Simulation results proved the accuracy and effectiveness of the method.