Touch Control Switching for Camera Positioning
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Solution Overview
Problem
Modern digital cameras with touch displays face challenges in accurately specifying focus detection areas and exposure settings due to the disparity between high-resolution camera sensors and low-resolution touch displays, making it difficult to use touch operations effectively for precise positioning.
Innovation Solution
An electronic apparatus and method that dynamically switch between absolute and relative position operations based on whether a predetermined area is detected in an image, allowing for precise touch operations by activating absolute position specification when the area is selected and relative position specification when it is not, enhancing the convenience and accuracy of touch operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a small touch display is used in a digital camera, then the device becomes more portable and compact, but it becomes difficult to accurately specify touch positions for focus detection and exposure settings
Solution Approach 1:
The patent introduces an intermediary magnification mechanism that enlarges the displayed image relative to the touch display size. This allows the camera to maintain a compact form factor while providing a magnified view that enables accurate touch positioning for focus detection and exposure settings, effectively bridging the gap between small display size and positioning precision
Solution Approach 2:
The patent adds a magnification dimension to the display system, transforming the 1:1 pixel correspondence into a many-to-one relationship where multiple display pixels represent a single camera sensor pixel. This dimensional transformation allows the small touch display to convey sufficient spatial information for accurate positioning without increasing physical display size
2Device complexity
If the touch display resolution is low compared to camera sensor resolution, then device complexity is reduced, but positioning precision for focus detection and exposure settings deteriorates
Solution Approach 1:
The patent dynamically changes the magnification parameter based on the detected area size. When a small area is detected for focus or exposure settings, the system increases magnification to improve positioning precision. This parameter adjustment allows the system to maintain accurate positioning without requiring a permanently high-resolution display, thus balancing device complexity with positioning accuracy
3Measurement precision
If absolute position operation is used on a small touch display, then position specification accuracy improves, but operation convenience deteriorates due to difficult finger extension
Solution Approach 1:
The patent implements a dynamic switching mechanism between absolute position operation and relative position operation based on the detected area size. For small areas requiring high precision, absolute position operation is enabled. For larger areas where convenience is prioritized, relative position operation is used. This dynamic adaptation allows the system to optimize for either precision or convenience depending on the shooting scenario
Data Source
AI summary
Disclosed are an electronic apparatus that achieves both the convenience of touch operation and accurate position specification, and a method for controlling the same. When an area that meets a predetermined condition has been detected in an image, the electronic apparatus executes a function corresponding to a position where a touch has been detected by touch detection means. When the area that meets the predetermined condition has not been detected or area detection is not carried out, the electronic apparatus carries out a process corresponding to an operation for moving a touched position rather than carrying out processing corresponding to the position where the touch has been detected by the touch detection means.