Planetarium Texture Rendering with Distance-Based Resolution Segmentation
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Solution Overview
Problem
Conventional planetarium picture-creating apparatuses lack the ability to display high-quality images of celestial bodies and cosmic space, particularly when a viewpoint is close to the surface, resulting in a low sense of realism due to limited texture resolution and inability to simultaneously depict changing conditions in cosmic space and surface patterns.
Innovation Solution
A planetarium picture-creating apparatus with real-time computing and texture image memory that adjusts texture image data based on distance from the viewpoint, allowing for dynamic rendering of celestial body surfaces and surrounding cosmic space, using multiple texture images or animations to maintain high quality and realism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single texture image is used for each celestial body, then the device complexity is reduced, but the image quality and sense of realism deteriorate when the viewpoint is close to the surface
Solution Approach 1:
The patent divides the texture image into multiple segments (first texture image and second texture image) with different resolutions. The first texture image has high resolution for close-up views, while the second texture image has low resolution for distant views. This segmentation allows the system to select appropriate resolution levels based on viewpoint distance, maintaining image quality without managing a single massive texture file.
Solution Approach 2:
The patent dynamically switches between different texture images based on the viewpoint distance to the celestial body. When the viewpoint is close, the high-resolution first texture image is used; when distant, the low-resolution second texture image is used. This dynamic adaptation maintains optimal image quality across varying distances without requiring all resolutions to be displayed simultaneously.
2Manufacturing precision
If multiple texture images with different resolutions are prepared, then the image quality and sense of realism are improved, but the device complexity and data management burden increase
Solution Approach 1:
The patent applies different quality levels (resolutions) of texture images to different local situations. High-resolution first texture images are applied when needed for close-up detailed views, while low-resolution second texture images are applied for distant views where detail is not required. This local quality adaptation optimizes the balance between image quality and data management complexity.
3Device complexity
If a static texture image is used, then the device complexity is reduced, but the ability to represent real-time changes in cosmic space and surface patterns deteriorates
Solution Approach 1:
The patent creates a dynamic picture by combining static texture images with real-time calculated positions of celestial bodies. The system calculates the positions of stars, planets, and other celestial objects in real-time and overlays them on the texture image background. This allows the system to represent real-time changes in cosmic space while using relatively simple static texture images for the surface appearance.
Data Source
AI summary
A planetarium apparatus of this invention memorizes a plurality of texture image data expressing conditions of a surface of an object in a picture memory by relating to the range of a distance from a viewpoint to the object. One of the texture image data in the picture memory is read out in accordance with a distance from the viewpoint to the object and by adjusting its size a texture image on the basis of the texture image data read out is pasted to an area of the entire image occupied by the object. Further, a remaining portion is formed as a real time image. In consequence, when a take-off from, or a landing onto, the surface of a celestial body is represented, a picture in which the condition of surrounding cosmic space is reproduced in real time, and the surface pattern of the celestial body from which a take off, or onto which a landing can both be displayed with a high degree of quality.