Focus Peaking Graphic Indicator Using Depth Information
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Solution Overview
Problem
Existing electronic devices using contrast information for focus peaking in manual focus operations face accuracy and usability issues due to inaccuracies in edge detection and luminance/brightness-based graphic indicators.
Innovation Solution
An electronic device that generates depth information from image pixels to determine a focusing area and displays a graphic indicator on the subject within that area, using depth information to accurately identify the focused region during manual camera focus operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If contrast information is used for focus peaking, then graphic indicator can be displayed, but accuracy of focused area identification deteriorates due to inaccurate edge detection and luminance-based indicators
Solution Approach 1:
The patent changes the parameter used for focus peaking from contrast information to depth information. By generating depth information that represents the depth of each pixel in the image, the system can accurately identify the focused area based on depth rather than contrast, thereby improving both measurement precision and reliability of graphic indicator positioning.
2Ease of operation
If contrast information and luminance are used for graphic indicator, then focus peaking can be displayed, but usability deteriorates due to inaccurate positioning
Solution Approach 1:
The patent changes from using contrast and luminance parameters to using depth information as the primary parameter for focus peaking. This parameter change enables accurate positioning of the graphic indicator on the focused area, thereby improving both measurement precision and ease of operation for manual focus control.
3Measurement precision
If depth information is used for graphic indicator, then accuracy of focused area identification improves, but device complexity increases due to additional processing requirements
Solution Approach 1:
The patent employs a multi-functional image processing system that generates depth information as part of its standard image processing pipeline. The same processing infrastructure used for other image tasks (such as autofocus, image stabilization, and image enhancement) is utilized to generate depth maps, thereby achieving accurate focus area identification without proportionally increasing device complexity.
Data Source
AI summary
An electronic device is provided. The electronic device includes a camera, a display, a memory, and at least one processor. The at least one processor may be configured to generate, based on information on pixels included in an image including at least one subject obtained using the camera, depth information corresponding to the at least one subject, to determine, based on the depth information, a first area displaying a first graphic indicator for indicating a focusing area on which the camera is focused, in the image displayed on the display, in a case in which a focus of the camera is controlled, and to display the first graphic indicator on at least some of the at least one subject included in the first area.