1. ABOUT THE DATASET -------------------- Title: Dataset for 'Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D Measurement System' Creator(s): Francesca Sairally [1], David A. Russell [1, 2], Heidi J. Siddle [1], Daniele Trinca [2], Claire L. Brockett [3], Peter R. Culmer [1]. Organisation(s): [1] University of Leeds, [2] Leeds Teaching Hospitals NHS Trust, [3] University of Sheffield Rights-holder(s): Unless otherwise stated, Copyright 2026 University of Leeds Publication Year: 2026 Description: This data set contains data relating to the journal article 'Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D Measurement System', including raw input image pair data, pre-processed DIC strain data and processed regional strain outputs. Cite as: F. Sairally, D.A. Russell, H.J. Siddle, D. Trinca, C.L. Brockett, P.R. Culmer (2026): Dataset for 'Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D Measurement System'. University of Leeds. Related Publication: Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D Measurement System. DOI: https://doi.org/10.1002/jfa2.70169 Contact: francescasairally@gmail.com 2. TERMS OF USE --------------- Copyright 2026 [University of Leeds]. Unless otherwise stated, this dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 3. PROJECT AND FUNDING INFORMATION ---------------------------------- Title: Development of Measurement Techniques to Identify and Characterise Diabetic Foot Ulceration and Foot Health Conditions Dates: 2022-2026 Funding organisation: EPSRC Grant no.: This dataset was not created in the course of a funded project. 4. CONTENTS ----------- File listing -01_Raw_Data [Folder] Folder structure containing raw data image pairs corresponding to the left and right cameras including pre and post deformation trials (T1-T3) for each participant (P01-P05) under each test condition(Callus and Control). The calibration file to be used during the 3D reconstruction of 3D DIC analysis is also included: -Calibration File [Calibration_File.mat] -P01 [Folder] Participant 1 pre and post deformation images for each camera -Callus [Folder] Images corresponding to the Callus test condition for trials T1-T3 T1 [Folder] Trial 1 Left [Folder] Images corresponding to left camera Pre-deformation image [Image_0001_0.tif] Post-deformation image [Image_0002_0.tif] Right [Folder] Images corresponding to right camera Pre-deformation image [Image_0001_1.tif] Post-deformation image [Image_0002_1.tif] T2 [Folder] Trial 2 Left [Folder] Images corresponding to left camera Pre-deformation image [Image_0001_0.tif] Post-deformation image [Image_0002_0.tif] Right [Folder] Images corresponding to right camera Pre-deformation image [Image_0001_1.tif] Post-deformation image [Image_0002_1.tif] T3 [Folder] Trial 3 Left [Folder] Images corresponding to left camera Pre-deformation image [Image_0001_0.tif] Post-deformation image [Image_0002_0.tif] Right [Folder] Images corresponding to right camera Pre-deformation image [Image_0001_1.tif] Post-deformation image [Image_0002_1.tif] -Control [Folder] Images corresponding to the Control test condition (without callus samples) for trials T1-T3 -P02 [Folder] Participant 2 pre and post deformation images for each camera -P03 [Folder] Participant 3 pre and post deformation images for each camera -P04 [Folder] Participant 4 pre and post deformation images for each camera -P05 [Folder] Participant 5 pre and post deformation images for each camera -02_Processed_Data [Folder] Folder structure containing 3D strain data processed using DuoDIC and MATLAB as shown below: -P01 [Folder] Participant 1 Pre-processed DuoDIC data and MATLAB processed data -MATLAB Processed Data [P0i_Processed_Data.xlsx] Smag (x, y and z components), Shear Smag (x and y components), Sx, Sy and Sz strain measures including median, mean, standard deviation, minimum and maximum across each anatomical region following MATLAB analysis for each participant, condition and trial (Participant ID, P0i, where i=1,..5). This data is provided for the Callus and Control conditions, as well as Pedar pressure data under each condition across 10 steps. -Callus [Folder] Pre-processed data corresponding to the Callus test condition for trials T1-T3 -DuoDIC Pre-processed Data [Pre-Processed_Data_Tj.mat] x,y,z positional data and deformation measurements corresponding to displacement and strain, derived using open-source DIC software DuoDIC (2023) for each test trial (Tj, where j = 1,2,3). Details for the associated paper to DIC software: DOI 10.21105/joss.04279 -Control [Folder] Pre-processed data corresponding to the Control test condition (without callus samples) for trials T1-T3 -DuoDIC Pre-processed Data [Pre-Processed_Data_Tj.mat] x,y,z positional data and deformation measurements corresponding to displacement and strain, derived using open-source DIC software DuoDIC (2023) for each test trial (Tj, where j = 1,2,3). Details for the associated paper to DIC software: DOI 10.21105/joss.04279 -P02 [Folder] Participant 2 Pre-processed DIC data and MATLAB processed data -P03 [Folder] Participant 3 Pre-processed DIC data and MATLAB processed data -P04 [Folder] Participant 4 Pre-processed DIC data and MATLAB processed data -P05 [Folder] Participant 5 Pre-processed DIC data and MATLAB processed data -ROI Labels [ROI_Labels.docx] Anatomical labels for defined regions of interest (ROI) applied with replicative Pedar masking. -ROI Anatomical Mask [Anatomical_Mask.svg] Masking template used to assign ROIs for data analysis. -03_Ethics_and_Participant_Sheets [Folder] Folder structure containing ethics consent form, provided participant information and experimental procedure sheets. -EPS FREC - 2024 1462-2517 [EPS FREC - 2024 1462-2517.pdf] Ethics approval -STAMPS3D Participant Experimental Procedure [Participant_Experimental_Procedure.docx] Participant experimental procedure -STAMPS3D Participant Information Sheet [Participant_Information_Sheet.docx] Participant information sheet -STAMPS3D Participant Consent Form [Participant_Consent_Form.docx] Participant consent form -Dataset Information [README_Sairally_2026.txt] 5. METHODS ---------- -Data was collected following the protocol outlined in "Measuring In-Shoe Plantar Strain Outcomes in the Presence of Callus: A Preliminary Study Using the STAMPS3D Measurement System". -Open-source software used to perform 3D DIC analysis, using DuoDIC (2023) within MATLAB. -Raw DIC data post-processed using custom scripts within MATLAB to anatomical segment strain data and produce visual strain maps.