Hair Movement Measurement Using Forced Oscillation and Image Processing
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Solution Overview
Problem
Current methods for assessing hair movement and bounce rely on qualitative consumer perception rather than technical data, lacking a reliable and reproducible mechanism for measuring these characteristics.
Innovation Solution
An apparatus and method that apply a forced oscillation to a hair sample, using a camera to capture images and a processor to extract quantitative measurements, with a filter to exclude stray hairs and apply consumer modelled data to predict consumer responses, enabling comparative analysis of hair products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter is applied to remove stray hairs from captured images, then measurement precision of hair movement characteristics is improved, but device complexity increases
Solution Approach 1:
The filter is applied to captured images to remove stray hairs before quantitative measurements are extracted from the images. This preliminary filtering action ensures that only relevant hair switch pixels are analyzed, improving measurement precision by eliminating data from detached stray hairs that would otherwise contaminate the measurement results.
2Reliability
If quantitative measurements are extracted from captured images, then reliability of hair movement assessment is improved, but loss of time in processing images increases
Solution Approach 1:
The system replaces qualitative consumer perception with automated optical measurement and image processing. A camera captures images of the hair switch during movement, and a computer with processor automatically extracts quantitative measurements from these images, providing reliable objective data without requiring time-consuming consumer studies.
3Productivity
If consumer modelled data is applied to predict consumer responses, then productivity of product comparison is improved, but loss of information from consumer perception increases
Solution Approach 1:
The system creates a computational model that replicates consumer perception of hair movement characteristics. By applying consumer modelled data to the quantitative measurements, the system predicts consumer responses to different hair products, enabling rapid product comparison while preserving the essential information about consumer preferences through the predictive model.
Data Source
AI summary
An apparatus for measuring movement characteristics of a first hair switch includes a movement rig, a camera, and a computer. The first hair switch is mountable on the movement rig. The movement rig is operable to apply a forced oscillation to the first hair switch. The camera is for capturing images of the first hair switch during movement of the first hair switch during and after application of the forced oscillation. The computer is communicably connected to the camera. The computer includes a processor for processing the images and extracting quantitative measurements of the first hair switch from the images. A filter is applied to the images to remove any stray hairs detected before subsequent analysis of the images is carried out.