Method for shooting and three-dimensional reduction and reconstruction

Abstract

The invention discloses a method for shooting and three-dimensional reduction and reconstruction. The method comprises the following steps of: 1, interior calibration: measuring an image distance and a focal distance of a digital camera (2) and parallelism of an optical shaft and a mechanical shaft; measuring an image distance and a focal distance of a light interference source and the parallelism of the optical shaft and the mechanical shaft; 2, exterior calibration: measuring parameters, including included angles X, Y and Z of axles X, Y and Z, of relative poses and absolute poses of a system and a distance between the digital camera (2) and the light interference source and focusing parameters; 3, shooting: shooting a shot object by the digital camera (2) under the irradiation of the light interference source; 4, image acquisition and image processing: extracting characteristic information of the surface of the shot object under grating mapping to realize output of multiple image formats; and 5, three-dimensional reconstruction: reading parameters in the interior calibration 1 and parameters in the exterior calibration 2, and calling the acquired image and the processed image in the step 4 to finish the stereoscopic matching of pixel points, so that the three-dimensional reconstruction and reduction on the pixel points is realized, and the precision and the speed of three-dimensional reduction and reconstruction are improved to a large extent.

Description

technical field [0001] The invention relates to a three-dimensional restoration and reconstruction method, in particular to a method including long-distance shooting, restoration and reconstruction. Background technique [0002] 3D reconstruction technology is currently one of the most attractive topics in the world. Countries around the world have invested heavily in pursuing and improving more realistic restoration quality and faster reconstruction speed. [0003] The so-called holographic three-dimensional reconstruction technology is based on the principles of computer stereo vision, computer graphics and optical imaging, to obtain images of three-dimensional space objects, digital measurement and restoration and reconstruction methods and devices. [0004] The conventional method is to use at least two image sensors with strict and precise positioning to image the same object to obtain two corresponding images and send them to the computer, and calculate and determine t...

AI Technical Summary

Problems solved by technology

[0005] In order to obtain a high-fidelity subject restoration, the existing technology requires two cameras to be precisely positioned, to keep the two cameras still, and to strictly test the precise distance between the two, but the processing, assembly and assembly of a large number of parts of the two cameras And shooting and other factors, it is impossible to have no errors. After decades of hard work, the distance accuracy has been reduced from millimeters to microns to tens of wires, which is close to the limit value of the mechanical concept, and it is difficult to make a breakthrough.

The slightest error between the cameras causes the measured and calculated object restoration data errors to be greatly amplified, and it is difficult to avoid deformation and distortion of the reconstructed object

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