A method and system for image-based three-dimensional reconstruction

Abstract

The invention discloses an interactive three-dimensional reconstruction method based on an image, and the method comprises the steps that a camera obtains a plurality of frames of images, and transmits the plurality of frames of images to a processor; a processor judges the received multiple frames of images and screens out multiple key frames from the multiple frames of images; the processor performs incremental analysis on the plurality of screened key frames and performs closed-loop detection at the same time; the processor is used for carrying out model consistency judgment on incrementalanalysis and closed-loop detection results and giving an interaction prompt when models are inconsistent; the processor provides a plurality of interactive interfaces (3D-3D alignment, 3D-2D alignmentand 2D-2D matching), so that a user can input key information conveniently; the processor fuses key information input by a user with incremental analysis and closed-loop detection results to completethree-dimensional reconstruction. According to the method, an automatic processing algorithm is properly combined with user interaction, and the accuracy of a reconstruction result is improved.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to an image-based interactive three-dimensional reconstruction method and system. Background technique [0002] Image-based 3D reconstruction (Image-based 3D Reconstruction) is an important branch in the field of computer vision research, and has broad application prospects in the fields of 3D map mapping, augmented reality, virtual reality, games, medical care, animation production, computer-aided design, etc. . Based on the principle of parallax, this technology analyzes the photos taken at different angles, and then uses the beam adjustment method to calculate the three-dimensional information of the subject, and then constructs a three-dimensional model consistent with the spatial structure of the subject. [0003] However, the current image-based 3D reconstruction technology is not yet mature enough, and there are still many difficulties in realizing fully aut...

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Problems solved by technology

[0006] 3. The problem of fusion of different areas in large scenes: For relatively large scenes, the reconstruction work will be divided into multiple areas, and the relevant information between different areas may be very little, making it almost impossible to perform fully automatic multi-area fusion

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