Celestial Sphere Display Rotation Axis Detection
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Solution Overview
Problem
Conventional display technologies fail to effectively showcase the diurnal motion of stars in celestial sphere images, as they only rotate the image horizontally and not in a manner that mimics the Earth's rotation, making it difficult for viewers to observe the actual motion of stars.
Innovation Solution
A display control apparatus and method that detects the rotation axis of celestial bodies within an image and adjusts the display area to rotate around this axis, simulating the Earth's rotation and allowing for a more immersive observation of star motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the celestial sphere image is rotated horizontally around the zenith-nadir axis, then the display can be changed in response to apparatus attitude, but the diurnal motion of stars cannot be easily observed
Solution Approach 1:
The patent applies dynamics by changing the rotation axis from the fixed zenith-nadir axis to the detected stellar rotation axis. The display dynamically adapts by rotating around the detected axis (e.g., Polaris for northern skies), allowing the rotation direction to match the actual diurnal motion of stars. This dynamic adjustment enables both apparatus attitude adaptation and accurate diurnal motion observation simultaneously.
Solution Approach 2:
The patent changes the parameter of rotation axis from a fixed geometric axis (zenith-nadir) to a dynamically detected axis based on stellar positions. By detecting the rotation axis through image analysis of stellar patterns and changing the display rotation parameter to align with this detected axis, the system achieves accurate representation of diurnal motion while maintaining adaptability to apparatus orientation.
2Device complexity
If the celestial sphere image is displayed with fixed rotation axis, then the display control is simple, but the diurnal motion pattern does not match actual star movement
Solution Approach 1:
The patent replaces the mechanical/geometric approach of fixed zenith-nadir axis rotation with an image-processing-based detection system. By analyzing stellar positions and patterns in the celestial sphere image to automatically detect the rotation axis, the system substitutes physical geometric constraints with computational analysis, achieving accurate diurnal motion representation without significantly increasing overall system complexity.
Solution Approach 2:
The system performs self-service by automatically detecting the rotation axis from the stellar patterns within the image itself. The image data contains the information needed to determine the rotation axis, and the system extracts this information through image processing, eliminating the need for external reference systems or manual configuration while ensuring accurate diurnal motion representation.
Data Source
AI summary
A display control apparatus according to the present invention includes: an axis detection unit configured to detect, based on an image, a rotation axis about which a celestial body included in the image as an object rotates in response to the rotation of the earth; and a control unit configured to perform control such that a partial area of the image is displayed as a display area, and rotation display is performed by changing the display area while changing an angle corresponding to the display area around a position corresponding to the rotation axis detected by the axis detection unit.