Dynamic Boundary Line Adjustment for Local Exposure Control
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Solution Overview
Problem
Existing image capturing apparatuses face difficulties in easily setting regions for exposure control, particularly when changes occur in captured images, as they lack precise control over exposure adjustments in response to image changes.
Innovation Solution
An image capturing apparatus equipped with an image sensor, display, and processor that analyzes captured images to determine boundary lines, adjusts these lines based on image changes, and controls exposure for specific regions, allowing for dynamic exposure adjustments based on brightness and change rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a digital ND filter process is used to control local exposure, then exposure control capability is provided, but it becomes difficult to set regions for which exposure is controlled when changes occur in the captured image
Solution Approach 1:
The system automatically determines boundary lines by analyzing the captured image itself, dividing the image into regions based on detected boundaries without requiring manual user input. This self-service approach resolves the contradiction by making the system adaptive to image changes while maintaining ease of operation through automation
Solution Approach 2:
The boundary lines are dynamically adjusted based on changes in the captured image. The system continuously analyzes the image and updates the boundary line positions to reflect current scene conditions, enabling the exposure control regions to adapt automatically to dynamic changes in the photographed scene
2Extent of automation
If boundary lines are determined based on image analysis, then exposure regions can be automatically set, but the position of boundary lines may become inaccurate when changes occur in the captured image
Solution Approach 1:
The system continuously monitors changes in the captured image and uses this feedback to adjust the boundary line positions. By analyzing image changes and updating boundary lines accordingly, the system maintains measurement precision while preserving automatic operation, resolving the contradiction between automation and accuracy
Data Source
AI summary
An image capturing apparatus includes: an image sensor that outputs an image signal obtained by image capturing by an imaging device, the imaging device performing image capturing of a photographic subject through an image capturing optical system; a display that displays a captured image based on the image signal; and a processor configured to determine, on the basis of a result of analysis of the captured image, a position of a boundary line along which the captured image is divided into a plurality of regions, adjust, in a case where a change occurs in the captured image, the determined position of the boundary line on the basis of the change in the captured image, and control, on the basis of a brightness of the captured image after the change, an exposure for at least one of the plurality of regions separated by the adjusted boundary line.