Three-dimensional ship dynamic display method based on multiscale rendering and fitting

Abstract

The invention discloses a three-dimensional ship dynamic display method based on multiscale rendering and fitting. The three-dimensional ship dynamic display method comprises the following steps: acquiring the type, position, course and navigational speed information of a real-time ship target, and combining computer system configuration to dynamically configure a corresponding three-dimensional model and icon information as ship display factors; based on viewing distance and intensive degree, switching the ship visibility and three-dimensional display way under different scales to ensure dynamic unload of the model and other resources; according to the viewing distance, position, navigational speed and other information, determining the interpolation intervals and fitting routes under different conditions, and carrying out multiscale forward calculation, straight line interpolation or curve fitting under different pole conditions to improve the processing efficiency and ship navigation display smoothness so as to finally realize the efficient dynamic three-dimensional ship display effect and combine overall performance optimization and detail feature display.

Description

technical field [0001] The invention belongs to the field of computer image processing, especially the display of ship traffic situation, and is a method for dynamic display of three-dimensional ships by using multi-scale rendering and fitting, in particular, an efficient three-dimensional display method for realizing a large number of ship targets under different navigation states. Background technique [0002] In the traditional vessel traffic management system, two-dimensional nautical chart-based ship target drawing is often used to show the traffic situation, and simple graphics (rectangles, triangles, etc.) and colors are used to distinguish ship target types and information sources, and dotted lines are used. Indicates the track of the ship, and the text label prompts the name of the ship and other information. The two-dimensional display method is simple and intuitive, and is suitable for maritime duty personnel to grasp and observe the overall traffic situation, but...

AI Technical Summary

Problems solved by technology

The two-dimensional display method is simple and intuitive, and is suitable for maritime duty personnel to grasp and observe the overall traffic situation, but there are also certain deficiencies, mainly including two aspects: (1) It cannot directly express various detailed characteristics of ship targets, Such as ship size, ship height, draft, appearance features, etc.; (2) The dynamic navigation process of the ship target cannot be continuously displayed, and the historical navigation track of the ship can only be expressed through discrete positions, without a smooth and continuous navigation effect

In the VTS software that has some 3D functions, its display effect generally has some shortcomings, which are mainly divided into several aspects: (1) The number of connected ship targets is very small, and the functions are also very limited, and a large number of targets are connected It is difficult to achieve the consistency of 2D and 3D traffic situation; (2) The dynamic effect is insufficient, and more emphasis is placed on the static model display of the ship, and the dynamic navigation effect of all targets cannot be observed

Since 3D rendering takes up more system resources, and with the increasing development of modern shipping, the port throughput and the number of ships are on a large scale. The goal is to easily reach the performance bottleneck of 3D display, which is also the internal reason why many 3D systems cannot be consistent with 2D ship traffic display and complement each other

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