Object depth information acquisition method on basis of single-frame compound template

Abstract

The invention discloses an object depth information acquisition method on the basis of a single-frame compound template and overcomes the defect of long consumed time of an existing time encoding mode. The object depth information acquisition method comprises the following implementing steps: 1, designing the single-frame compound template P; 2, utilizing the single-frame compound template to obtain a deformed image I; 3, demodulating from the deformed image I to obtain two frames of period co-prime square wave templates I1' and I'2; 4, calculating truncation phases Phi1 and Phi2 of each pixel point in the two frames of square wave templates by a Gabor filter; 5, by the truncation phases Phi1 and Phi2, solving a truncation phase development value phi; 6, solving a matched point (x, y) of a pixel point (x', y') in the deformed image I in the single-frame compound template P by phi; 7, according to a geometrical relationship of the pixel point and the matched point, solving a depth information value of an object to be measured. According to the invention, depth information acquiring speed of the object is increased, and depth information acquiring accuracy of the object is improved; the object depth information acquisition method can be used for industrial monitoring, medical science, human-computer interaction and 3D (three-dimensional) printing scenes.

Description

technical field [0001] The invention belongs to the technical field of computer vision, and mainly relates to a method for acquiring depth information of an object, which can be used in industrial monitoring, medical science, human-computer interaction and 3D printing scenes. Background technique [0002] The signals collected by traditional image imaging instruments are only two-dimensional information in the spatial domain, and the depth information in the three-dimensional scene has not been collected. With the development of science and technology and the improvement of people's living standards, traditional two-dimensional information can no longer meet the needs of people's real life. How to quickly and efficiently obtain the depth information in the 3D scene from the scene has become a current research hotspot. [0003] The process of obtaining scene depth information from the 3D information of the actual scene is called depth acquisition. According to whether conta...

AI Technical Summary

Problems solved by technology

Although this method has the advantages of easy implementation, high measurement accuracy, and high spatial resolution, it needs to project multiple frames of templates, which takes a long time and is not suitable for the measurement of dynamic object depth data.

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