BOLERO

Hair Volume measurement
Fly-away / Frizz analysis

BOLERO test volume frizz static styling fly-away imaging full orientation claims research

Features

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission calibration logo 3d easy 360 degrees

360° VIZUALISATION

Imaging of your samples from 36 angles on a full rotation

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission calibration logo 3d easy

PLUG & PLAY

No special installation is needed - easy cabling and the system is ready to go

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission calibration logo 3d

3D RECONSTRUCTION

In-house algorithm for a full reconstruction of bulk and frizz volume

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission calibration logo

AUTO-CALIBRATED

An automatic calibration is done every time the software is launched

Overview

BOLERO is an imaging system dedicated to hair swatch 3D volume reconstruction and fly-away/frizz analysis. It is used in the cosmetic industry to substantiate claims and evaluate products efficacy such as conditioners, volumizing shampoo, shine sprays, etc.

BOLERO comes as a turn-key system including hardware and computer with dedicated software. Based on the acquisition of a sequence of contour images of a swatch, BOLERO delivers a 3D model of the hair swatch. The system also simultaneously provides volume measurements as part of the 3D model, including frizz/fly-away analysis.

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission calibration logo 3d easy 360 degrees full system

A user-friendly software allows the user to acquire the measurement in one click. A complete analysis of the hair swatch (volume, bulk, fly-away etc.) of the hair is delivered in less than 2 minutes. Numerical data (fly-away distribution, bulk distribution, profiles, etc.), 3D point clouds and images can be quickly compared and exported for reports, presentations or post processing.

Principle

Hair swatch is not easy to analyze because it is composed of a multitude of individual fibers, and its boundaries are not well defined. Therefore, it is nearly impossible to use a commercial 3D scanner to reconstruct the 3D shape of the hair swatch.

Using uniform back-light illumination, we can measure the transmission of the light through the hair swatch with a standard black and white image of the sample. For each pixel of the image, we measure the light transmitted. 

If the transmission :

  • is inferior to a defined threshold, this corresponds to a high-density area and we can define the pixel as part of the bulk
  • is higher than the defined threshold, this is a low-density area and we can define the pixel as part of the fly-away / frizz

In BOLERO, we use a threshold of 50%.

Bolero Volume frizz hair care claims bulk fly-away full rotation transmission

Due to the irregularity of the shape of a hair swatch, measuring volume with only one image will necessary induce a lot of errors. The BOLERO uses a rotatory platform so that 36 images – 1 every 10 degrees – of a single sample will be taken.

A reconstruction technique is then performed, and uses the sequence of contours – or silhouettes – acquired by the BOLERO to reconstruct the 3D shape of both the bulk and the frizz volume.

On the adjacent figure, all the images from the raw gray-scales to the processed bulk and frizz separation images  are displayed for all the available angle values. 

Specifications

HAIR SAMPLE SPECIFICATIONS
Hair swatch length/weight
From 5 to 30 cm - 20 grams
Hair swatch color
Any
DATA
Data saved
Raw images
Processed images
XYZ Point cloud
Data export
Excel
GENERAL SPECIFICATIONS
Camera
Monochrome 8 bits
Resolution
2,592 x 1,944 pixels
Illumination
LED panel
Software
BOLERO -
Windows 10
Measurement time
< 1 minute
Calibration
Factory calibrated
Size
15" x 30" x 20 "
(375mm x 750mm x 500mm)
Power
110/200 VAC, 50/60 Hz

Resources

Documentation

BOLERO - Sample Report

This report has been graciously shared with us
by our partner SP Equation (France)

Scientific publications​