Curved Display Image Processing Using Eye-Point Projection
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Solution Overview
Problem
Existing image processing devices require high computational capacity and cost to render vehicle exterior images on non-planar screens, such as curved displays, due to the complexity of transforming and displaying these images naturally.
Innovation Solution
An image processing device and method that utilizes an eye-point information acquisition unit, parameter generation unit, and image generation unit to generate and display high-precision images on non-planar screens by employing projective transformation matrices to transform coordinates between different coordinate systems, reducing computational load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional coordinate transformation methods are used to display images on non-planar screens, then the image can be displayed on the screen, but the computational load increases enormously
Solution Approach 1:
The patent divides the coordinate transformation process into two distinct stages: first transforming from the capture coordinate system to the eye-point coordinate system using a projective transformation matrix, and then transforming from the eye-point coordinate system to the display coordinate system. This segmentation allows each transformation to be optimized independently, reducing the overall computational complexity while maintaining high precision for non-planar screen displays.
Solution Approach 2:
The patent introduces an eye-point coordinate system as an intermediate coordinate system between the capture coordinate system and the display coordinate system. This intermediary framework serves as a bridge that simplifies the transformation process, enabling efficient computation of image coordinates for non-planar screens without sacrificing rendering precision.
2Measurement precision
If high processing capacity is used to render natural vehicle exterior images on curved screens, then the image quality improves, but the cost increases
Solution Approach 1:
The patent changes the parameters of the coordinate transformation by using a projective transformation matrix that specifically accounts for the eye-point position and the non-planar screen geometry. This parameter optimization enables high-precision image rendering on curved screens using standard processing capacity, avoiding the need for expensive high-performance computing resources.
3Measurement precision
If complex coordinate transformation is performed to account for eye position, then the viewing accuracy improves, but the processing time increases
Solution Approach 1:
The patent performs preliminary calculations of the projective transformation matrix based on the eye-point position and display geometry before actual image rendering. By pre-computing these transformation parameters, the system achieves high viewing accuracy without incurring additional processing time during real-time operation, as the complex calculations are done in advance.
Data Source
AI summary
An image processing device connected to a display device having a non-planar screen. The image processing device generates a parameter for generating a display-target image in accordance with information on an eye position; generates a display-target image from an outside-world image based on the generated parameter; and outputs the generated display-target image to the display device. The parameter includes: an element of a projective transformation matrix for transforming the coordinates of the outside-world image from those in the first coordinate system corresponding to the real space into those in the coordinate system (a second coordinate system) of the outside-world image; and an element of a projective transformation matrix for transforming, into the coordinates of the screen, the coordinates of a part of the outside-world image corresponding to the area of the reference plane to be displayed on the screen.