Three-dimensional visualization method based on point cloud and image data and system thereof

Abstract

The invention discloses a three-dimensional visualization method based on point cloud and image data and a system thereof. The method comprises the following steps of collecting image data and point cloud data of a target scene; carrying out upsampling on the point cloud data, projecting the point cloud data after the upsampling to the image data so as to carry out fusion, coloring the fused point cloud data and acquiring the colorful point cloud data; and using the colorful point cloud data to carry out three-dimensional rendering and acquiring a three-dimensional visualization model of the target scene. In the invention, point-cloud three-dimensional visualization from data acquisition and fusion to final rendering display is realized, which is good for development of a laser point cloud technology; and accessibility and usability of the point cloud data to a common user are increased.

Description

technical field [0001] The invention belongs to the field of three-dimensional visualization of point clouds, and more particularly relates to a method and system for three-dimensional visualization based on point cloud and image data. Background technique [0002] At present, many types of 3D laser scanners can only collect 3D coordinate point cloud data of the target scene due to limitations of their own hardware and working methods. These point cloud data do not contain the real color and texture information of the target scene, so they can only color or false color display. The mature and successful high-resolution camera photogrammetry technology makes up for the congenital deficiency of the 3D laser scanner. The image data of the target scene collected by the camera contains rich color and texture information, and the pixel density is high, which is exactly the same as the 3D laser point cloud data. Complementary advantages have been formed. [0003] However, there i...

AI Technical Summary

Problems solved by technology

[0003] However, there is still no complete 3D visualization solution for point cloud from data collection and fusion to final rendering display, which seriously affects the expansion of laser point cloud technology.

Therefore, there is an urgent need for a complete and feasible 3D visualization solution that integrates laser point cloud and image data to improve the accessibility and usability of point cloud data for ordinary users, and solve the technical problems of poor realism and limited accessibility of point cloud in the past.

Images