Hybrid Viewfinder Color Temperature Adjustment via Displayed Reference
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Solution Overview
Problem
In imaging apparatuses with hybrid viewfinders, users face challenges in accurately adjusting color temperature due to unconscious brain corrections when the targeted color of the optical image deviates from the ideal color, leading to inaccurate adjustments, especially under different light sources.
Innovation Solution
The imaging apparatus includes a finder unit, an in-finder information display unit, a color temperature adjustment unit, and a display controller that displays target and image color temperature information in adjacent areas, allowing users to accurately adjust the color temperature by comparing the two, even when the optical image's target color slightly deviates from the ideal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users adjust color temperature by targeting the color of an optical image in hybrid viewfinder mode, then the adjustment operation becomes simple and intuitive, but the adjustment accuracy deteriorates due to unconscious brain corrections when the targeted color deviates from ideal color
Solution Approach 1:
The patent introduces a color temperature information display as an intermediary element between the optical image and the user's adjustment decision. This display shows the actual color temperature value of the optical image, serving as an objective reference that mediates the user's subjective color perception. By providing this intermediate information layer, the system bridges the gap between intuitive operation and accurate measurement, allowing users to make informed adjustments without being misled by unconscious brain corrections.
Solution Approach 2:
The system implements feedback by displaying the measured color temperature information of the optical image back to the user in real-time. This feedback loop allows users to see the actual color temperature value and adjust it accordingly, rather than relying solely on subjective visual assessment. The feedback mechanism corrects the tendency for unconscious brain corrections by providing objective numerical or visual reference information about the current color state.
2Ease of operation
If the hybrid viewfinder displays only the optical image for framing, then the viewing experience remains natural and uninterrupted, but the user cannot confirm the captured image quality and color accuracy in advance
Solution Approach 1:
The patent merges the optical image viewing function with the captured image preview function in the hybrid viewfinder. By superimposing or juxtaposing the captured image information with the optical image, the system allows users to simultaneously perform framing with the natural optical view while confirming the captured image quality, color accuracy, and other exposure parameters. This merging eliminates the need to switch between different viewing modes and provides comprehensive information in a single view.
Solution Approach 2:
The system adds an informational dimension to the traditional optical viewfinder by overlaying digital image data (captured image quality, color temperature, exposure settings) onto the optical path. This creates a multi-dimensional viewing experience where users can assess both the compositional framing (spatial dimension) and the technical quality parameters (informational dimension) simultaneously, without losing the natural optical viewing experience.
3Extent of automation
If the AWB adjustment function autonomously adjusts color temperature based on light source detection, then the operation becomes automatic and convenient, but the adjustment accuracy deteriorates due to false detection of light source type in certain imaging scenes
Solution Approach 1:
The system provides feedback by displaying the detected color temperature information and allowing users to verify its accuracy. When the AWB function detects a light source type, the system presents this information to the user through the viewfinder display, enabling users to assess whether the detection is accurate for the current scene. This feedback mechanism allows users to intervene and correct false detections while maintaining the convenience of automatic detection for accurate scenarios.
Solution Approach 2:
The color temperature display serves as an intermediary between the automatic AWB detection system and the user's final decision. Rather than blindly trusting the automated detection, users can observe the detected color temperature value and compare it with their visual assessment or reference standards. This intermediary information layer allows users to override false detections while maintaining automatic operation for correct detections.
Data Source
AI summary
An imaging element captures an optical image incident through an imaging lens. A finder device is configured to be capable of observing the optical image. An EVFLCD displays information to be observable in a state of being overlapped on or being close to the optical image, in the finder device. An EVF display controller controls the EVFLCD so that target color temperature information indicating a color temperature that is a target of color temperature adjustment and image color temperature information indicating a color temperature of the captured image are displayed as the information. A color temperature adjustment unit adjusts the color temperature of the captured image obtained by capturing the optical image using the imaging element based on a color temperature adjustment operation. In a case where the color temperature adjustment operation is performed, the image color temperature information is changed in accordance with an adjustment operation amount.