Three-dimensional acquisition and reconstruction system based on mobile sparse camera acquisition array

Abstract

The invention discloses a three-dimensional acquisition and reconstruction system based on a mobile sparse camera acquisition array. Through the simultaneous movement of a plurality of camera acquisition units (at most 8 camera acquisition units) arranged at random within a certain range, collection of three dimensional surface information is performed on a collected object, and each pixel point in all collected images is compared, and depth information of the collected object is obtained through an optimization algorithm, therefore, a three-dimensional coordinate of the pixel point can be calculated, and finally, a digital model which satisfies a real physical size of the collected object can be obtained. The three-dimensional acquisition and reconstruction system based on the mobile sparse camera acquisition array provided by the invention not only simplifies the whole system, but also reduces a link of introducing an error when calculating internal and external parameters in an acquisition process.

Description

technical field [0001] The invention belongs to the field of three-dimensional acquisition and reconstruction, and more specifically relates to a three-dimensional acquisition and reconstruction system based on a mobile sparse camera acquisition array. Background technique [0002] Three-dimensional acquisition technology generally includes two methods: active acquisition and passive acquisition. Compared with passive acquisition, active acquisition generally increases or enhances the surface characteristics of the acquired object by introducing additional light (structured light) to the acquired object, so that When the surface features of the collected object are scarce, the collected data can also be used for subsequent reconstruction work, and the reconstruction accuracy is improved at the same time. Structured light can be statically projected onto the surface of the collected object in the form of dot matrix or stripes, and can also dynamically project different featur...

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Problems solved by technology

[0004] The present invention mainly aims at the problems of the above-mentioned image-based three-dimensional reconstruction method, and designs a three-dimensional acquisition and reconstruction system based on a mobile sparse camera acquisition array. The distance between them is not more than 1000mm) and the camera acquisition unit is arranged randomly, collects the surface of the object to be collected in the field of view of the camera collection unit, and transmits the data back to the graphics workstation to perform image-based three-dimensional reconstruction to obtain the real image of the object to be collected. Digital models with consistent physical dimensions

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