Face Distance Guidance via Horizontal Image Inversion
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Solution Overview
Problem
Existing information processing devices for capturing facial images struggle to maintain a constant distance between the device and the user's face, leading to inconsistent image capture conditions and difficulties in comparing past and current skin conditions, while also being cumbersome and restrictive in use.
Innovation Solution
A control method that includes a camera and display for horizontally inverting the captured face image, detecting the distance between the device and a reference point on the face, determining a scaling factor, and displaying a guide image to adjust the distance, allowing the user to maintain a consistent distance without fixing any facial parts, enabling natural and consistent image capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device uses fixed positioning methods to maintain constant distance, then image capture consistency is improved, but device complexity and user discomfort increase
Solution Approach 1:
The patent replaces mechanical fixed positioning systems with an optical guidance system. Instead of using physical fixtures or mechanical devices to hold the user's face at a fixed position, the system uses a camera to detect face distance and a display to show guidance images that optically guide the user to the correct position, eliminating complex mechanical positioning mechanisms.
Solution Approach 2:
The system enables users to self-position by providing real-time visual feedback through guidance images. The user independently adjusts their own face position relative to the device by following the guidance images displayed on the screen, without requiring external mechanical assistance or complex positioning systems.
2Reliability
If the device uses fixed positioning methods to maintain constant distance, then image capture consistency is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces cumbersome mechanical positioning mechanisms with an optical guidance system. Users no longer need to deal with complex fixed positioning equipment; instead, they simply follow visual guidance images displayed on a screen to naturally position their face at the correct distance, significantly improving ease of operation.
Solution Approach 2:
The system provides real-time visual feedback in the form of guidance images that show the user's current position relative to the optimal position. This feedback loop enables users to intuitively adjust their face position by observing how their face appears in the guidance image, making the operation simple and intuitive without requiring understanding of complex positioning mechanisms.
3Ease of operation
If the device captures images at variable distances, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The system uses feedback in the form of guidance images that dynamically adjust based on the detected face distance. The guidance images provide real-time information about the user's position and guide them to the optimal distance, enabling precise distance control while maintaining ease of operation through intuitive visual feedback rather than complex mechanical constraints.
Solution Approach 2:
The system dynamically adjusts the guidance images based on the detected face distance. Instead of using fixed mechanical positioning, the system continuously adapts the visual guidance to match the user's current position and guides them to the optimal distance, achieving precise measurement control through dynamic optical guidance rather than static mechanical constraints.
Data Source
AI summary
A control method for controlling an information processing device 101 including a camera 10 for receiving an image and a display 14 having a display surface on the same side as an image-receiving side of the camera 10 according to an embodiment causes a computer 18A of the information processing device 101 for receiving an image of a face 21 of a subject from the camera 10, horizontally inverting the received image, and displaying the horizontally-inverted image on the display 14, to execute: detecting a distance between the information processing device 101 and a reference portion included in the face 21 of the subject; determining a scaling factor based on a ratio between a reference distance used for evaluating the image of the face 21 of the subject and the detected distance; and displaying, on the display 14, as a guide image 35 for guiding the subject in such a direction as to change a distance between the information processing device and the subject, an image corresponding to at least one part included in an image obtained by enlarging or shrinking the horizontally-inverted image of the face based on the determined scaling factor.