Binary grid coding template structure light-based object surface depth value measurement method

Abstract

The invention provides a binary grid coding template structure light-based object surface depth value measurement method, and aims to improve object surface depth value measurement accuracy by reducing interference of object surface color and surface jump on discrete characteristic decoding. The method comprises the implementation steps of 1) designing a binary grid coding template P; 2) acquiringa gray-scale deformation image I; 3) deleting environmental illumination and discrete characteristic in the gray-scale deformation image I; 4) acquiring a deformation image I3 comprising grid line position information and the discrete characteristic; 5) acquiring a code element sequence of the deformation image I3 and the binary grid coding template P; 6) solving a matching point of a grid line pixel point of the deformation image I3; and 7) calculating a depth information value ZW of a surface of a to-be-detected target object O. The method can be used for scenes such as human-machine interaction, inverse engineering, automatic navigation and biomedicine test.

Description

technical field [0001] The invention belongs to the technical field of computer vision measurement, and relates to a method for measuring the depth value of the surface of an object, in particular to a method for measuring the depth value of the object surface based on a structured light method based on a single-frame binary grid coding template, which can be applied to man-machine Interaction, reverse engineering, automatic navigation, and biomedical testing. Background technique [0002] With the continuous development of computer vision, 3D imaging technology has been widely used. So far, a large number of depth perception technologies have been studied and applied, among which the methods of measuring the depth information of the object surface include: time-of-flight method, stereo vision method and structured light method. Among them, for the structured light method, the essence is to design a template containing information such as space or phase, project it onto the...

AI Technical Summary

Problems solved by technology

However, the defect is that this method uses colored grid lines as discrete features and is interfered by the surface color of the object to be measured during the decoding process, which affects the accuracy of the final measurement, and the discrete features are sparse, resulting in the use of The sliding window window is relatively large, and the surface jump of the object will also affect the accuracy of the measurement

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