Smartphone Camera Shielding Detection via Edge Region Analysis
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Solution Overview
Problem
When using a smartphone camera to take pictures, the user's hand may inadvertently shield the lens, affecting the photographic effect without being aware of it, as existing methods lack effective detection and prevention mechanisms.
Innovation Solution
A method and apparatus that acquire image characteristics of the edge region in a captured image, such as color and area, to determine if the hand is shielding the camera, using predetermined conditions like color values, area ranges, optical parameters, and movement trajectories to issue prompt messages to adjust the user's posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user takes pictures with the smartphone camera, then the camera function is used, but the user's hand may shield the lens and affect the photographic effect
Solution Approach 1:
The system continuously monitors image characteristics (brightness, color, area) of the captured image and provides real-time feedback to the user through prompt messages when hand shielding is detected, enabling the user to adjust their posture to improve the photographic effect
Solution Approach 2:
The patent introduces an intermediary detection mechanism that analyzes image characteristics (brightness distribution, color values, area ratios) to indirectly detect hand shielding, serving as a mediator between the camera and the user to prevent shielding issues
2Measurement precision
If existing methods determine finger area based on low brightness area or hue information, then finger detection is attempted, but the detection accuracy is insufficient and cannot reliably prevent shielding
Solution Approach 1:
The patent changes the detection parameters from simple brightness or hue analysis to a multi-parameter approach including brightness distribution patterns, color value ranges, area ratios, and positional relationships, significantly improving detection precision and reliability
Solution Approach 2:
The detection method combines multiple detection criteria (brightness characteristics, color information, area proportions, positional relationships) into a composite detection system, where each parameter contributes to the overall accuracy of hand shielding detection
Data Source
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AI summary
The present disclosure provides a method and an apparatus for preventing a photograph from being shielded. The method includes: acquiring an image characteristic of an edge region in a picture captured by a camera, in which the image characteristic at least includes image color and an area of a continuous image with the same image color; judging whether the image characteristic of the edge region satisfies a predetermined image characteristic condition; and determining that the picture captured by the camera contains a shielding object and issuing a prompt message, if the image characteristic of the edge region satisfies the predetermined image characteristic condition. With the method, it may be determined that the picture is shielded, and then the user is reminded to adjust operational postures at that time so as to ensure that the visual effect of the photograph is not affected.