Image Capture Signal Processing for Luminance Consistency
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Solution Overview
Problem
When images are recorded by an image capture apparatus and displayed on a different display apparatus, there is a possibility of luminance and color inconsistency, leading to a user experience of inconsistency with the original display during shooting.
Innovation Solution
An image capture apparatus is designed with separate signal processing circuits for display and recording, along with a recording circuit that stores settings for display signal processing, allowing for consistent reproduction of luminance and color by associating these settings with recorded image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If separate signal processing circuits are used for display and recording to reduce power consumption, then power consumption is reduced, but luminance and color consistency between different display devices deteriorates
Solution Approach 1:
The patent applies preliminary action by recording display settings information (luminance, color, signal processing parameters) at the time of image capture, before the image is displayed on different devices. This pre-recorded information enables consistent reproduction of the original display characteristics without requiring complex real-time adjustments, thus maintaining reliability while keeping power consumption low.
Solution Approach 2:
The patent introduces display settings information as an intermediary element that mediates between the image data and the display device. This intermediary contains metadata about the original display conditions (luminance, color, signal processing settings) and enables the reproduction system to restore consistent visual characteristics across different devices without requiring the displaying device to have identical hardware to the capturing device.
2Use of energy by moving object
If simple development processing is applied for display to reduce power consumption, then power consumption is reduced, but image quality and consistency with recorded images deteriorates
Solution Approach 1:
Display settings information serves as an intermediary that carries instructions for consistent signal processing across different display scenarios. By recording the original display settings (luminance, color, processing parameters) and applying them during playback, the system achieves image quality consistency without requiring complex real-time processing, thus maintaining low power consumption while ensuring manufacturing precision in terms of image quality.
3Adaptability or versatility
If different display devices are used for viewing recorded images, then device versatility is improved, but luminance and color consistency deteriorates
Solution Approach 1:
The patent applies universality by creating a display settings information structure that is device-agnostic and can be applied across different display devices with varying capabilities. The recorded metadata (luminance, color, signal processing settings) serves as a universal reference that can guide the reproduction process on any display device, enabling consistent image presentation across diverse hardware platforms without requiring device-specific customization.
Solution Approach 2:
Display settings information acts as an intermediary layer between the captured image data and various display devices. This intermediary contains the original display conditions and enables consistent reproduction across different devices by providing reference information that can be applied regardless of the specific display hardware being used, thus maintaining reliability while improving versatility.
Data Source
AI summary
An image capture apparatus comprises a first signal processing circuit that generates image data for display by applying signal processing for display to image data obtained from an image sensor and a second signal processing circuit that generates image data for recording by applying signal processing for recording to the image data obtained from the image sensor. The image capture apparatus further comprises a recording circuit that records, in association with the image data for recording, information from which settings of the signal processing for display can be identified.