Lookup Table Mapping for Projector Ambient Lighting
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Solution Overview
Problem
Existing technologies do not effectively enable easy achievement of different ambient lighting effects by deriving a signal from image content displayed on a display for projectors, lacking flexibility and resource-efficient solutions.
Innovation Solution
An electronic device and method using a lookup table to map positions between a main image and a surround image, allowing for various ambient lighting effects by remapping pixel values, with options for user modification and efficient resource usage, including interpolation and offset adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional methods are used to derive signals for projectors, then the system requires extensive hardware and software modifications, but this increases device complexity and resource requirements
Solution Approach 1:
The patent uses a lookup table to store pre-computed mapping relationships between main image positions and surround image positions. Instead of performing complex real-time geometric transformations, the system copies pixel values from the main image to the surround image using the pre-stored mapping data, significantly reducing computational complexity while maintaining flexibility in achieving different ambient lighting effects
Solution Approach 2:
The mapping between main image and surround image positions is pre-computed and stored in a lookup table before runtime. This preliminary action allows the system to quickly generate surround images during operation without performing complex calculations in real-time, reducing both device complexity and processing requirements
2Adaptability or versatility
If complex transformation methods are used to generate surround images, then more ambient lighting effects can be achieved, but this increases memory requirements and processing resources
Solution Approach 1:
The patent implements a copying mechanism where pixel values from the main image are directly copied to the surround image using pre-computed mapping relationships stored in a lookup table. This approach achieves diverse ambient lighting effects through simple position mapping and copying operations, avoiding the need for complex transformation algorithms that would require more memory and processing resources
3Manufacturing precision
If real-time geometric transformation is performed for each pixel, then accurate surround image generation is achieved, but this increases processing time and computational load
Solution Approach 1:
The patent performs the complex geometric transformation calculations in advance and stores the results in a lookup table. During real-time operation, the system only needs to retrieve pre-computed mapping relationships and copy pixel values, maintaining high accuracy in surround image generation while dramatically reducing processing time and computational load
Solution Approach 2:
Instead of performing real-time geometric transformations, the patent uses a copying approach where pixel values are transferred from main image to surround image using pre-stored position mappings. This method maintains accuracy by preserving the pre-computed spatial relationships while avoiding repeated complex calculations
Data Source
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AI summary
The invention relates to an electronic device (1) for providing a signal to at least one projector (7). A processor (3) is operative to obtain a lookup table from a storage means (9). This lookup table comprises a mapping between a position in an image source and a position in a surround image. The processor (3) is further operative to use the mapping to determine the surround image from a main image displayed or to be displayed on a display (5) and to provide a signal to one or more projectors (7) for causing the one or more projectors (7) to project at least part of the surround image around the display (5). The invention further relates to the method performed by the electronic device and a computer program product enabling a programmable device to perform this method.