Display Apparatus Tone Mapping Based on Device Brightness
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Solution Overview
Problem
Current display apparatuses lack the capability to directly generate and apply tone mapping functions to images, relying on external metadata for brightness adjustments, which can lead to suboptimal image display quality due to differences in display device brightness limitations.
Innovation Solution
The display apparatus and method enable direct generation of tone mapping functions based on brightness information and reference tone mapping curves, allowing for dynamic adjustments to ensure optimal image display on various devices, regardless of their maximum brightness levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If display apparatus relies on external metadata for brightness adjustments, then device complexity is reduced, but image display quality deteriorates due to differences in display device brightness limitations
Solution Approach 1:
The display apparatus performs self-service by autonomously generating its own tone mapping function based on its maximum brightness capability. The processor extracts brightness information from image data and generates a customized tone mapping function that adapts to the specific display device's characteristics, eliminating reliance on external metadata while optimizing image quality for that particular device.
Solution Approach 2:
The system changes the parameter of tone mapping by generating a customized function tailored to each display apparatus's maximum brightness. Instead of using a universal tone mapping from external metadata, the processor adjusts the tone mapping parameters dynamically based on the display device's specific brightness capabilities, thereby resolving the contradiction between device simplicity and image quality.
2Manufacturing precision
If display apparatus directly generates tone mapping function, then image display quality is improved, but device complexity increases
Solution Approach 1:
The display apparatus implements self-service functionality where the processor autonomously generates tone mapping functions based on the device's own brightness characteristics and the incoming image data. This self-generated approach improves image quality while keeping the system architecture relatively simple by utilizing existing processor capabilities rather than adding complex external metadata processing systems.
3Adaptability or versatility
If display apparatus uses external tone mapping curves, then adaptability to different displays is reduced, but communication overhead is maintained
Solution Approach 1:
The invention extracts the tone mapping function generation capability from external metadata and implements it within the display apparatus itself. By taking out the dependency on external tone mapping curves and implementing local generation based on device-specific brightness information, the system achieves superior adaptability to different displays while minimizing communication overhead.
Solution Approach 2:
The display apparatus serves itself by generating appropriate tone mapping functions locally based on its maximum brightness capability. This self-service approach eliminates the need for extensive external communication and metadata exchange, thereby reducing communication overhead while maximizing adaptability to the specific display device's characteristics.
Data Source
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AI summary
A display apparatus displaying, a method for controlling the display apparatus, and an image providing apparatus. The display apparatus includes a communicator configured to receive image data of an image and brightness information of the image, a processor configured to generate a tone mapping curve by using the brightness information and to apply the tone mapping curve to the image data to provide tone mapped image data, and a display configured to display the image based on the tone-mapped image data.