Autofocus Indicator Visibility for Pupil Selection in Electronic Viewfinders
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Solution Overview
Problem
Existing autofocus techniques in digital cameras face difficulties in accurately selecting a pupil as an AF target, especially when the indicator for the touched position approaches a detected face, and the touch response region is not optimally displayed in an electronic viewfinder, leading to reduced operability.
Innovation Solution
An electronic apparatus with a detector capable of identifying specific objects and their elemental organs, featuring a specific operation mode that allows for the selection of elemental organs, such as pupils, within an image, with an indicator that remains visible at the designated position even when moving within the detected object's range, enhancing the display and selection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the indicator is hidden when it approaches a detected face to emphasize the face display, then the face region becomes more prominent, but it becomes difficult to select a pupil which is an organ of the face
Solution Approach 1:
The patent applies dynamics by making the indicator display state changeable based on the selected operation mode. In organ selection mode, the indicator remains visible even when overlying a face, whereas in other modes it is hidden to emphasize the face. This dynamic adjustment of display behavior resolves the contradiction between face emphasis and organ selection capability.
Solution Approach 2:
The patent changes the display parameter (indicator visibility) based on the operation mode. When organ selection is enabled, the indicator visibility parameter is set to remain visible regardless of position relative to detected faces. This parameter change allows the system to maintain both face emphasis functionality and organ selection capability under different operational conditions.
2Loss of information
If the indicator is always displayed to show touched position, then position feedback is clear, but it becomes difficult to select pupils as AF target when the indicator is within the face region
Solution Approach 1:
The system dynamically adjusts indicator visibility based on operation mode. In organ selection mode, the indicator remains visible even when positioned over a face, providing continuous position feedback while enabling pupil selection. This dynamic behavior eliminates the need to choose between position feedback and organ selection capability.
Solution Approach 2:
The display parameter of indicator visibility is changed based on the operation mode setting. When organ selection is active, the indicator visibility parameter ensures the indicator remains visible regardless of its position relative to detected faces, thereby maintaining position feedback while enabling accurate pupil selection.
3Adaptability or versatility
If the touch response region is adjusted for electronic viewfinder display, then the display state is optimized, but the operability of selecting organs varies and is not most appropriate
Solution Approach 1:
The patent makes the touch response region and indicator display behavior dynamically adjustable based on the operation mode. When organ selection mode is activated, the system adjusts the touch response region and maintains indicator visibility to optimize operability for organ selection, while in other modes it optimizes for general face detection. This dynamic adaptation resolves the contradiction between display optimization and organ selection operability.
Solution Approach 2:
The system changes operational parameters including touch response region configuration and indicator visibility settings based on the selected operation mode. When organ selection is enabled, these parameter changes ensure that the touch response region and display behavior are optimized specifically for accurate organ selection, thereby improving ease of operation without sacrificing display state optimization.
Data Source
AI summary
An electronic apparatus performs control to display an indicator at a designated position on a screen in response to an operation of an operation unit, and performs control to, when the designated position has moved from outside of a range corresponding to a specific object to within the range, emphasizes display of a region indicating the specific object and hides the indicator if in a second operation mode that is not the specific operation mode, and displays the indicator at a position in accordance with the designated position without hiding the indicator if in the specific operation mode, and performs control to select the elemental organ if in the specific operation mode and if the indicator is at a position corresponding to the elemental organ inside the range corresponding to the specific object.