Digital Camera Shake Visualization via Frame Shifting
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Solution Overview
Problem
Photographers struggle to intuitively recognize the degree of camera shake when holding a digital camera, as existing warning systems are not effective due to limitations in display area and varying zoom ratios, leading to inconsistent perception of camera shake.
Innovation Solution
A digital camera configuration that includes a solid-state image pickup device, a signal processing unit, a display unit, a camera shake detection unit, and a control unit that amplifies and shifts the through-image extraction frame to visually represent camera shake, correcting displacement based on zoom ratio and resolution to maintain a consistent sense of camera shake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-definition image is thinned down for display on a small display portion, then the display area is limited, but the degree of camera shake cannot be recognized visually
Solution Approach 1:
The invention transforms the camera shake information from spatial domain (image blurring) to temporal domain (movement trajectory). By displaying the movement trajectory of the through-image over time, the system enables camera shake recognition in a different dimensional space, overcoming the limitation of small display area while maintaining high measurement precision for shake detection.
2Adaptability or versatility
If the through-image is displayed on the display portion while shaken largely in accordance with the zoom ratio when the zoom ratio is high, then the feeling of camera shake varies widely according to the zoom ratio, but this gives a sense of incompatibility to the photographer
Solution Approach 1:
The invention changes the display parameter from direct image shaking proportional to zoom ratio to a standardized movement trajectory display. By normalizing the camera shake visualization independent of zoom ratio, the system maintains consistent photographer perception across different zoom levels while preserving adaptability to various shooting conditions.
3Reliability
If a predetermined warning pattern is displayed to warn the photographer of camera shake, then a warning can be given, but the photographer cannot grasp intuitively the degree of camera shake
Solution Approach 1:
The invention creates a visual copy of the actual camera shake movement trajectory by shifting the through-image extraction frame according to detected shake amounts. This copied movement pattern provides an intuitive visual representation that directly reflects the degree and direction of camera shake, making it easier for photographers to perceive and measure shake levels compared to abstract warning patterns.
Data Source
AI summary
A digital camera comprising: a solid-state image pickup device having an image pickup region; a signal processing unit for generating a through-image on a basis of an image signal read from a region extracted from a through-image extraction frame of said image pickup region; a display unit for displaying said through-image generated by said signal processing unit; a camera shake detection unit for detecting an amount of camera shake; and a control unit for calculating an amount of displacement by amplifying said amount of camera shake detected by said camera shake detection unit and shifting said through-image extraction frame on a basis of said amount of displacement.