Image Matching Selection Unit for Person Identification
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Solution Overview
Problem
Existing image recognition systems for person identification, such as those using 2D/3D composite matching apparatuses, face delays in processing due to the generation of 3D matching face images from stereo images, impacting the speed of the matching process.
Innovation Solution
An information processing apparatus and method that acquires a two-dimensional image and selects between two-dimensional and three-dimensional registered images based on the image orientation, allowing for immediate matching without generating 3D images, thereby enhancing processing speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a 3D matching face image is generated from stereo image to determine matching mode, then matching accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by analyzing the orientation of the captured person image in advance and pre-determining the appropriate matching mode (2D or 3D) before actual matching occurs. This allows the system to skip the time-consuming 3D image generation step when 2D matching is sufficient, while still maintaining accurate 3D matching when needed.
Solution Approach 2:
The patent changes the parameter of matching mode selection from being based on 3D image generation to being based on image orientation analysis. By changing this key parameter, the system achieves the same matching accuracy improvement while avoiding the time penalty of generating 3D images for mode determination.
2Measurement precision
If 3D registered images are used for matching, then matching accuracy is improved, but processing speed decreases
Solution Approach 1:
The patent introduces dynamics by making the matching mode flexible and adaptive based on image orientation. Instead of always using 3D registered images, the system dynamically selects between 2D and 3D matching modes, achieving high accuracy when needed while maintaining high processing speed when 2D suffices.
3Reliability
If stereo image processing is performed to generate 3D matching face image, then matching reliability is improved, but processing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the matching process into two distinct paths: 2D matching for front-facing images and 3D matching for non-front-facing images. This segmentation allows the system to use simpler 2D processing when appropriate, reducing overall complexity while maintaining reliability through selective 3D processing.
Data Source
AI summary
An information processing apparatus includes: an acquisition unit that acquires a two-dimensional image of a person, and a registered image group including two-dimensional registered images and three-dimensional registered images of a plurality of registrants; and a selection unit that selects a type of a registered image to be used for matching from one of the two-dimensional registered images and the three-dimensional registered images based on the two-dimensional image, prior to the matching the two-dimensional image with the registered image group.