Visual Processing Device Real-Time Strength Adjustment
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Solution Overview
Problem
Conventional visual processing devices face challenges with large memory requirements and slow data updates due to the need for extensive profile data, leading to inefficient real-time adjustment of visual processing strength, especially when handling images with sharp edges or special images, resulting in unnatural artifacts.
Innovation Solution
A visual processing device with an effect adjustment portion that sets the visual processing effect using an effect adjustment signal, allowing for real-time adjustment of visual processing strength without requiring extensive profile data updates, by synthesizing signals and using a two-dimensional lookup table for tone conversion characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If profile data is updated according to the strength of visual processing, then the visual processing strength can be adjusted, but the memory capacity required becomes large
Solution Approach 1:
The patent segments the visual processing adjustment into two independent parts: (1) a fixed profile data structure stored in memory, and (2) a dynamic effect adjustment signal that modulates the processing strength. This segmentation allows the system to adjust visual processing strength without requiring multiple complete profile data sets, thereby reducing memory capacity requirements while maintaining adaptability.
Solution Approach 2:
The patent introduces a dynamic effect adjustment signal that can vary the strength of visual processing in real-time without requiring updates to the stored profile data. This dynamic approach allows flexible adjustment of processing strength by modulating the application of the fixed profile data, eliminating the need for large memory capacity to store multiple profile versions.
2Adaptability or versatility
If profile data is updated according to the strength of visual processing, then the visual processing strength can be adjusted, but the update time becomes slow
Solution Approach 1:
The patent performs preliminary action by pre-storing a single set of profile data with fixed conversion characteristics. This pre-prepared profile data structure allows for rapid adjustment of visual processing strength through the effect adjustment signal without requiring time-consuming updates to the profile data itself, enabling real-time adaptability.
Solution Approach 2:
The dynamic effect adjustment signal enables real-time modification of visual processing strength by modulating the application of the fixed profile data. This dynamic mechanism eliminates the need for slow profile data updates, allowing immediate adjustment of processing strength in response to changing conditions.
3Manufacturing precision
If a two-dimensional LUT is used for visual processing, then tone conversion can be performed, but the data amount becomes large
Solution Approach 1:
The patent segments the tone conversion process into a fixed two-dimensional LUT structure and a dynamic effect adjustment signal. The LUT stores only the base conversion characteristics, while the effect adjustment signal provides the variable component. This segmentation reduces the total data amount required compared to storing complete processing data for all possible strength levels.
Solution Approach 2:
The patent changes the parameter representation by separating the fixed conversion characteristics (stored in LUT) from the variable processing strength (controlled by effect adjustment signal). This parameter separation allows the system to maintain tone conversion precision while reducing data storage requirements by not redundantly storing all possible parameter combinations.
4Manufacturing precision
If visual processing is performed on images with sharp edges, then contrast enhancement can be achieved, but unnatural artifacts occur
Solution Approach 1:
The patent applies local quality by allowing the effect adjustment signal to vary the processing strength locally across different image regions. This enables the system to apply stronger contrast enhancement in regions where it is appropriate while reducing or eliminating processing in regions with sharp edges that are prone to artifacts, thereby maintaining image quality while achieving contrast enhancement where needed.
Data Source
AI summary
A visual processing device, display device, visual processing method, program, and integrated circuit that change a strength of visual processing of an image in real-time. A spatial processing portion (2) creates an unsharp signal US from an input signal IS. A target level setting portion (4) sets a predetermined target level value L for setting a range according to which the strength of the visual processing is adjusted. An effect adjustment portion (5) creates a synthesized signal MUS by synthesizing the predetermined target level value L and the unsharp signal US in accordance with an effect adjustment signal MOD that has been set externally. A visual processing portion (3) outputs an output signal OS in accordance with the input signal IS and the synthesized signal MUS, making it possible to change the strength of the visual processing.