Double/single ocular white light three-dimensional measuring system for repairing defects of patient face

Abstract

A double-monocular white light three-dimensional measurement system used for restoring face defect of patients belongs to fields of optical measurement, mechanical engineering and medical engineering. The measurement system includes a left monocular measurement head, a right monocular measurement head, a measurement head support, a measurement head translation mechanism, a control cabinet and a computer. Based on structure optical projection three-dimensional vision measurement technique, the measurement system employs double-monocular measurement structure, white light sources which are safe for human body are employed in a left magic lantern projector and a right magic lantern projector for rear projection of physical coding grating, Gray codes and phase shift coding stripes are projected on left and right faces of patients, after a left camera and a right camera take a view of deformed gating images, measurement of complete three-dimensional face appearance of patients is realized by image decoding, triangle principle and double-eye measurement data combination. The measurement system can realize accurate data collection of natural state parenchyma of patient faces under non-contact condition and provide credible three-dimensional appearance original data of patient faces for clinic appearance defect restoring therapy.

Description

Technical field: [0001] The invention relates to a dual-monocular white light three-dimensional measurement system for repairing facial defects of patients. In particular, it is a three-dimensional measurement system based on structured light projection three-dimensional vision measurement technology, which adopts a dual-monocular measurement structure to realize complete data collection of facial appearance of patients with facial defects. It belongs to the technical fields of optical measurement, mechanical engineering and medical engineering. Background technique: [0002] Facial defects caused by various reasons will not only hinder the physiological function of the patients, but also cause serious psychological obstacles to the patients, making it difficult to carry out normal work and social interaction, and even make many patients lose their confidence in life. Due to the special anatomical shape, tissue structure and other influencing factors of the maxillofacial or...

AI Technical Summary

Problems solved by technology

This method of making an impression has many disadvantages: for example, the impression material will irritate the tissue to a certain extent, and may cause soft tissue displacement, resulting in model deviation; Poor aesthetic effect, inaccurate positioning and fit, etc.

Since it is impossible for the patient's posture and facial shape to remain absolutely still during the entire measurement process, the stitching after multi-view measurement will introduce a large stitching error, resulting in inaccurate facial measurement data of the patient.

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