Multi-Parameter Skin Imaging for Accurate Feature Detection
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Solution Overview
Problem
Conventional skin health detection methods using a single flash photo fail to meet precision requirements due to variations in ambient light and focal length, leading to inaccurate detection results.
Innovation Solution
Acquire multiple images using different photographing parameters, including focal lengths and light intensities, to ensure accurate detection of skin features by adjusting focal lengths and light intensities automatically, thereby improving detection precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple images are acquired from different positions and angles to improve comprehensive information, then the completeness of defect detection is improved, but the time consumption and processing complexity increase
Solution Approach 1:
The system pre-establishes a three-dimensional model of the product before actual inspection. By having the model ready in advance with all possible viewing angles and positions pre-calculated, the system can quickly match captured images to the pre-built model without real-time complex computations, thus reducing inspection time while maintaining comprehensive defect detection
Solution Approach 2:
The patent creates a digital three-dimensional copy of the product model that can be virtually viewed from any angle without physically moving the product or capturing multiple images. This virtual copying allows comprehensive inspection through the digital model while requiring minimal physical image acquisition, resolving the time-quality trade-off
2Measurement precision
If multiple images are acquired from different positions and angles to improve comprehensive information, then the completeness of defect detection is improved, but the device complexity and processing difficulty increase
Solution Approach 1:
The patent introduces a three-dimensional model as an intermediary between the physical product and the inspection system. Instead of directly processing multiple complex images from different angles, the system maps images onto the simplified three-dimensional model, which serves as a mediator to organize and interpret the visual data, thereby reducing processing complexity
Solution Approach 2:
The system transforms the inspection problem from processing multiple two-dimensional images with complex spatial relationships into analyzing a single three-dimensional model with standardized parameters. By changing the representation parameter from multiple 2D views to one 3D model, the processing complexity is significantly reduced while maintaining comprehensive defect detection capability
3Measurement precision
If the product is moved to different positions for image acquisition, then comprehensive surface information is obtained, but the inspection efficiency decreases
Solution Approach 1:
Instead of physically moving the product to capture images from different positions, the patent creates a three-dimensional digital copy of the product model. Inspectors can view this digital copy from any angle or position virtually, eliminating the need for physical repositioning while maintaining complete surface inspection capability, thus preserving inspection efficiency
Solution Approach 2:
The three-dimensional model is constructed in advance as a preliminary representation of the product. This pre-established model contains all surface information in a structured format, allowing rapid inspection from any viewpoint without requiring actual product movement, thereby maintaining high inspection efficiency while ensuring comprehensive coverage
Data Source
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Figure 2
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AI summary
Embodiments of the present invention relate to an image acquisition method, apparatus, and terminal. The method includes: acquiring, by the terminal, at least one first image based on a first photographing parameter, where the first image includes a first to-be-detected item; acquiring, by the terminal, at least one second image based on a second photographing parameter, where the second image includes a second to-be-detected item; and determining, based on the first image and the second image, a detection result corresponding to the first to-be-detected item and a detection result corresponding to the second to-be-detected item. This resolves a problem that a to-be-detected item to be analyzed in an image is affected differently due to a change of a factor such as a focused position and a light intensity of a flash during imaging of a camera. According to the method provided in the present invention, it can be ensured that both a blur degree of a depth of field position and a detail part in each to-be-detected image meet detection precision, thereby ensuring accuracy of a detection result. In addition, all photographing processes of the method are subject to fully automatic continuous photographing, so that a user does not need to manually adjust a focal length and a light intensity, thereby improving user experience.