Stereoscopic measurement system for lingual surface instrument

Abstract

The invention discloses a stereoscopic measurement system for a lingual surface instrument. The system comprises an FPGA controller and an image acquisition module, wherein a data end interface of theimage acquisition module is connected with the FPGA controller through a control line, a data end of the FPGA controller is further connected with an SDRAM storage, a communication port of the FPGA controller is connected with a USB interface chip, a signal end of the USB interface chip is connected with a computer, the inner portion of the image acquisition module is provided with a data receiving module and a serial port communication module, a signal end of the serial port communication module is respectively connected with a communication port of the FPGA controller and a communication port of a blue light scanner, an input end of the data receiving module receives image signals of the blue light scanner, a three-dimensional measurement method based on fringe period calibration is adopted, the blue light scanner is used to detect and analyze the shape and appearance data of the tongue, image processing is carried out on collected data, the accuracy of scanning and the stability ofthe data are improved, and the processing efficiency of the data is improved.

Description

technical field [0001] The invention relates to the technical field of stereoscopic measurement systems, in particular to a stereoscopic measurement system for tongue and face instruments. Background technique [0002] In the visual measurement of the tongue surface instrument, the contour information of the tongue surface comes from the image, and image processing is the key to ensure the quality of the three-dimensional contour measurement. Stereo point pair matching between images is the most important and difficult step in image processing. The current stereo measurement system of tongue and face instrument still has certain defects: [0003] (1) In the existing stereoscopic measurement system, image data communication is required between multiple cameras and the computer, and the data storage capacity is large, which puts forward high requirements for the synchronization of image acquisition and data transmission speed; [0004] (2) The existing stereo measurement syst...

AI Technical Summary

Problems solved by technology

The disadvantage is that Fourier analysis, filtering, inverse Fourier transform, phase unwrapping and other processing are required in the process of phase modulation and demodulation, the algorithm complexity is high, and the measurement accuracy and stability are not easy to guarantee;

[0005] (3) The structure of the existing stereo measurement system is also relatively complex, and the data processing rate is relatively slow

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