Image Signal Conversion Display for HDR-SDR Dynamic Range Control
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Solution Overview
Problem
Users face difficulties in understanding how image signals are converted in image processing apparatuses, leading to improper settings and reduced dynamic range, especially when transitioning between HDR and SDR standards.
Innovation Solution
An image processing apparatus with a conversion unit and a display control unit that generates and displays information showing the relationship of image signals before and after conversion, including scales and signal values, allowing users to easily comprehend the conversion process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If signal conversion is performed in the image capturing apparatus to match external apparatus compatibility, then the output signals become compatible with external apparatus, but the user cannot easily understand how the conversion is performed leading to improper settings
Solution Approach 1:
A display control unit is introduced as an intermediary component that visually represents the conversion process between recording signals and output signals. The display unit shows waveform comparisons, conversion ratios, and signal characteristics, allowing users to understand the conversion process without needing technical expertise in signal processing.
Solution Approach 2:
The system provides visual feedback by displaying the relationship between input and output signals in real-time. Users can see how conversion settings affect the signal characteristics, enabling them to make informed adjustments to maintain appropriate dynamic range and signal quality.
2Manufacturing precision
If signal conversion and gradation conversion are performed during the period until signals are output, then the output signals match the required standard, but the dynamic range may be narrowed more than necessary due to improper settings
Solution Approach 1:
The patent replaces manual trial-and-error adjustment of conversion parameters with an automated display system that visually presents conversion relationships. This allows users to accurately set conversion parameters by observing the visual representation of signal relationships, rather than relying on mechanical adjustment without feedback.
3Adaptability or versatility
If the image processing apparatus performs multiple conversions to achieve HDR-SDR simultaneous recording, then both HDR and SDR signals can be generated, but the complexity of understanding signal relationships increases
Solution Approach 1:
The display control unit segments the complex conversion process into visually distinct components, showing recording signals, intermediate converted signals, and final output signals as separate waveforms. Each conversion stage is represented independently, making it easier for users to understand the multi-stage conversion process required for HDR-SDR simultaneous recording.
Data Source
AI summary
An image processing apparatus comprises: a conversion unit configured to convert a characteristic of an image signal; and a display control unit configured to generate information indicating a relationship of image signals before and after conversion is performed by the conversion unit, and cause a display to display the information indicating a relationship of image signals, wherein the display control unit generates the information indicating a relationship of image signals, so as to include information indicating a relationship of scales of signals before and after conversion and information indicating a relationship of signal values before and after conversion.