Zoom Control Device with Automatic Composition Selection
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Solution Overview
Problem
Existing imaging apparatuses require manual selection of composition settings by photographers, leading to potential misalignment of subject size within the frame, especially when scene or subject conditions change, and differ between still and moving image photography.
Innovation Solution
A zoom control device with a subject detection unit, composition selection unit, and control unit that automatically selects the appropriate composition and adjusts zoom magnification based on detected subject size and state, allowing for seamless tracking and framing without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual composition selection is implemented, then the photographer can choose the desired composition, but the operation complexity increases and the subject size may not be appropriate when scene changes occur
Solution Approach 1:
The system performs automatic composition selection and zoom control without requiring manual intervention. The composition selection unit automatically determines the appropriate composition based on detected subject information, and the control unit automatically adjusts zoom magnification, allowing the system to serve itself rather than requiring the photographer to manually select compositions and adjust settings.
Solution Approach 2:
The system dynamically changes composition parameters and zoom magnification based on detected subject conditions. When the subject detection unit detects changes in subject size, position, or type, the composition selection unit adjusts the composition parameters accordingly, and the control unit modifies zoom magnification to maintain appropriate subject sizing without manual intervention.
2Reliability
If fixed composition setting is used, then the zoom control is simplified, but the subject may fall outside frame or be too small when scene conditions change
Solution Approach 1:
The system dynamically adjusts composition and zoom magnification based on real-time subject detection results. The composition selection unit continuously monitors subject conditions and changes composition parameters dynamically, while the control unit adjusts zoom magnification in real-time to ensure the subject remains appropriately framed regardless of scene condition changes.
Solution Approach 2:
The system uses feedback from the subject detection unit to continuously adjust composition and zoom settings. The detection results regarding subject size, position, and characteristics are fed back to the composition selection unit and control unit, which adjust their parameters accordingly to maintain reliable subject framing across varying scene conditions.
3Ease of operation
If automatic composition selection is implemented, then the operation convenience is improved, but the device complexity increases
Solution Approach 1:
The system divides the automatic composition selection function into separate modules: a subject detection unit that identifies subject characteristics, a composition selection unit that determines appropriate composition parameters, and a control unit that adjusts zoom magnification. This segmentation allows each module to perform its specific function independently, improving operation convenience while managing device complexity through functional decomposition.
Data Source
AI summary
A subject detection unit of an imaging apparatus detects a subject image from an image. An automatic zoom control unit automatically selects a specific composition among a plurality of compositions, sets a reference size of the subject image used to control a zoom magnification based on the selected composition, and controls the zoom magnification according to the reference size and a size of the subject image detected by the subject detection unit. The selectable composition differs between when a photographing state is a photographing preparation state of a still image and when the photographing state is a recording state of a moving image.