Camera Display Control for Focus Frame Rotation
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Solution Overview
Problem
Existing display control systems for cameras fail to accurately display the focusing state when the camera attitude changes, leading to misalignment between the focal point detection region and the focus frame, which can result in incorrect focusing.
Innovation Solution
A display control apparatus and method that includes an acquiring unit for focusing state information, a display control unit for displaying the focusing state, and an attitude detecting unit that rotates the focus guide display without rotating the focal point detection region when the camera attitude changes by 90 degrees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the focus frame is rotated according to the change in camera attitude, then the focus guide appears to adapt to the new orientation, but the focal point detection region does not rotate, causing misalignment between the focus frame and the actual detection region
Solution Approach 1:
The focus guide is divided into two independent components: the focus frame (first display element) and the focal point detection region (second display element). The focus frame rotates with camera attitude changes to maintain visual adaptability, while the focal point detection region remains fixed to preserve accurate alignment with the sensor's pixel configuration. This segmentation allows each component to fulfill its specific function without compromising the other.
2Measurement precision
If the focal point detection region has a different height-width proportion due to pixel configuration constraints, then the detection accuracy is maintained, but the focus frame cannot accurately represent the detection region when rotated
Solution Approach 1:
The focus frame and focal point detection region are given different transformation properties based on their local functional requirements. The focus frame is designed to rotate with camera attitude changes to maintain visual adaptability and user interface consistency. In contrast, the focal point detection region maintains its fixed aspect ratio and orientation to preserve accurate representation of the sensor's pixel configuration and detection precision. This local quality differentiation resolves the conflict between adaptability and precision.
3Reliability
If only the focus frame is rotated without rotating the focal point detection region, then the detection region alignment is preserved, but the focus guide display becomes inconsistent with the camera orientation
Solution Approach 1:
The focus guide is segmented into two independently controllable elements: the focus frame that rotates to match camera orientation for visual consistency, and the focal point detection region that remains fixed to maintain reliable alignment with the sensor. This segmentation allows the system to simultaneously achieve both reliability through fixed detection region alignment and ease of operation through rotated frame adaptability.
Solution Approach 2:
The focus frame acts as an intermediary visual indicator that rotates to bridge the user's perspective (camera orientation) and the fixed focal point detection region. This intermediary element provides visual feedback that is intuitive to the user while the underlying detection mechanism remains reliably aligned with the sensor configuration.
Data Source
AI summary
A display control apparatus acquires focusing state information indicating a focusing state of a specific region having a different height-width proportion in a captured image, performs control so as to display, together with the captured image, a first display element indicating the specific region and a second display element indicating the focusing state on a display unit, detects an attitude of the display control apparatus, and performs control so as to rotate and display the second display element without rotating the first display element if the attitude of the display control apparatus has been changed from a first attitude to a second attitude by 90 degrees.