Patrick Sandoz
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View article: VERNIER: an open-source software pushing marker pose estimation down to the micrometer and nanometer scales
VERNIER: an open-source software pushing marker pose estimation down to the micrometer and nanometer scales Open
Pose estimation is still a challenge at the small scales. Few solutions exist to capture the 6 degrees of freedom of an object with nanometric and microradians resolutions over relatively large ranges. Over the years, we have proposed seve…
View article: Understanding False and Denied Pregnancies from an Evolutionary Perspective
Understanding False and Denied Pregnancies from an Evolutionary Perspective Open
False and denied pregnancies are insufficiently understood mental health disorders affecting women. Denied pregnancies in particular can result in unexpected births, putting both mother and child at risk. Improved understanding is therefor…
View article: Digital holographic microscopy applied to 3D computer micro-vision by using deep neural networks
Digital holographic microscopy applied to 3D computer micro-vision by using deep neural networks Open
Deep neural networks (DNNs) are increasingly employed across diverse fields of applied science, particularly in areas like computer vision and image processing, where they enhance the performance of instruments. Various advanced coherent i…
View article: Automating Robotic Micro-Assembly of Fluidic Chips and Single Fiber Compression Tests based-on XY Θ Visual Measurement with High-Precision Fiducial Markers
Automating Robotic Micro-Assembly of Fluidic Chips and Single Fiber Compression Tests based-on XY Θ Visual Measurement with High-Precision Fiducial Markers Open
International audience
View article: Digital holographic microscopy applied to 3D computer microvision by using deep neural networks
Digital holographic microscopy applied to 3D computer microvision by using deep neural networks Open
Deep neural networks are increasingly applied in many branches of applied science such as computer vision and image processing by increasing performances of instruments. Different deep architectures such as convolutional neural networks or…
View article: Automating Robotic Micro-Assembly of Fluidic Chips and Single Fiber Compression Tests Based-on Θ Visual Measurement With High-Precision Fiducial Markers<i/>
Automating Robotic Micro-Assembly of Fluidic Chips and Single Fiber Compression Tests Based-on Θ Visual Measurement With High-Precision Fiducial Markers<i/> Open
International audience
View article: Fast autofocusing using tiny transformer networks for digital holographic microscopy
Fast autofocusing using tiny transformer networks for digital holographic microscopy Open
The numerical wavefront backpropagation principle of digital holography confers unique extended focus capabilities, without mechanical displacements along z-axis. However, the determination of the correct focusing distance is a non-trivial…
View article: Fast Autofocusing using Tiny Transformer Networks for Digital\n Holographic Microscopy
Fast Autofocusing using Tiny Transformer Networks for Digital\n Holographic Microscopy Open
The numerical wavefront backpropagation principle of digital holography\nconfers unique extended focus capabilities, without mechanical displacements\nalong z-axis. However, the determination of the correct focusing distance is a\nnon-triv…
View article: Fast Autofocusing using Tiny Networks for Digital Holographic Microscopy
Fast Autofocusing using Tiny Networks for Digital Holographic Microscopy Open
This dataset contains a set of experimental holograms of a pseudo-periodic pattern ranging on 92 \({\mu}m\) with a step of ~1 \({\mu}m\) between each class of holograms. A total of 40,400 holograms are divided in 100 classes each containin…
View article: Encoded pseudo-periodic patterns for robust visual pose determination at the microscale
Encoded pseudo-periodic patterns for robust visual pose determination at the microscale Open
International audience
View article: Self-autofocusing using deep learning for digital holography and applied to position measurement
Self-autofocusing using deep learning for digital holography and applied to position measurement Open
International audience
View article: A High Range-to-Resolution Multi-axis μForce and Torque Sensing Platform
A High Range-to-Resolution Multi-axis μForce and Torque Sensing Platform Open
International audience
View article: Robust Phase-Based Decoding for Absolute (X, Y, Θ) Positioning by Vision
Robust Phase-Based Decoding for Absolute (X, Y, Θ) Positioning by Vision Open
International audience
View article: Visual Measurements at Small Scales: Guidelines to Reduce Uncertainties down to a Few Nanometers
Visual Measurements at Small Scales: Guidelines to Reduce Uncertainties down to a Few Nanometers Open
International audience
View article: Robust, precise and scalable: A phase-encoded pattern for visual X, Y, Θ positioning
Robust, precise and scalable: A phase-encoded pattern for visual X, Y, Θ positioning Open
International audience
View article: Nanometer Precision With a Planar Parallel Continuum Robot
Nanometer Precision With a Planar Parallel Continuum Robot Open
International audience
View article: Sensing One Nanometer Over Ten Centimeters: A Microencoded Target for Visual In-Plane Position Measurement
Sensing One Nanometer Over Ten Centimeters: A Microencoded Target for Visual In-Plane Position Measurement Open
International audience
View article: Modeling CLiMP-63 spatio-temporal distribution and its interplay with Post-translational modification
Modeling CLiMP-63 spatio-temporal distribution and its interplay with Post-translational modification Open
Post-translational modifications may affect a protein’s localization, half-life or structural conformation. Palmitoylation is the only re- versible lipid modification known to date. It involves the attachment of a fatty acid (palmitoyl) to…
View article: Digital Holography as Computer Vision Position Sensor with an Extended Range of Working Distances
Digital Holography as Computer Vision Position Sensor with an Extended Range of Working Distances Open
Standard computer vision methods are usually based on powerful contact-less measurement approaches but applications, especially at the micro-scale, are restricted by finite depth-of-field and fixed working distance of imaging devices. Digi…
View article: Evolutionary-rooted models for denial of pregnancy, concealment of pregnancy and pseudocyesis
Evolutionary-rooted models for denial of pregnancy, concealment of pregnancy and pseudocyesis Open
Women in denial of pregnancy remain unaware of their gravid state. Typically women in labor present to emergency units while attributing their pain to unrelated causes. In higher risk cases, women experience unassisted delivery in a non-ho…
View article: Evolutionary-rooted models for denial of pregnancy, concealment of pregnancy and pseudocyesis
Evolutionary-rooted models for denial of pregnancy, concealment of pregnancy and pseudocyesis Open
Women in denial of pregnancy remain unaware of their gravid state. Typically women in labor present to emergency units while attributing their pain to unrelated causes. In higher risk cases, women experience unassisted delivery in a non-ho…
View article: Accurate Region-of-Interest Recovery Improves the Measurement of the Cell Migration Rate in the In Vitro Wound Healing Assay
Accurate Region-of-Interest Recovery Improves the Measurement of the Cell Migration Rate in the In Vitro Wound Healing Assay Open
The wound healing assay is widely used for the quantitative analysis of highly regulated cellular events. In this essay, a wound is voluntarily produced on a confluent cell monolayer, and then the rate of wound reduction (WR) is characteri…
View article: Experimental and numerical assessment of the mechanics of keloid-skin composites undergoing large deformations
Experimental and numerical assessment of the mechanics of keloid-skin composites undergoing large deformations Open
International audience
View article: Microfabrication of position reference patterns onto glass microscope slides for high-accurate analysis of dynamic cellular events
Microfabrication of position reference patterns onto glass microscope slides for high-accurate analysis of dynamic cellular events Open
Glass microscopes slides are widely used as in situ base-substrates carrying diverse micro-fabricated systems or elements. For such purposes, the micro-fabrication process consists in transferring a pre-defined design onto the substrate ma…
View article: Visual in-plane positioning of a Labeled target with subpixel Resolution: basics and application
Visual in-plane positioning of a Labeled target with subpixel Resolution: basics and application Open
Vision is a convenient tool for position measurements. In this paper, we present several applications in which a reference pattern can be defined on the target for a priori knowledge of image features and further optimization by software. …
View article: Intra‐ and inter‐individual variability in the mechanical properties of the human skin from in vivo measurements on 20 volunteers
Intra‐ and inter‐individual variability in the mechanical properties of the human skin from in vivo measurements on 20 volunteers Open
Background/purpose: The mechanical properties and behavior of the human skin in vivo are of medical importance, particularly to surgeons who have to consider the skin extension capabilities in the preparation of surgical acts. Variable dat…
View article: Ultra‐light extensometer for the assessment of the mechanical properties of the human skin in vivo
Ultra‐light extensometer for the assessment of the mechanical properties of the human skin in vivo Open
Background/purpose: This paper aims to present an ultra‐light extensometer device dedicated to the mechanical characterization of the human skin in vivo. Methods The device developed was conceived to be non‐invasive, to work without any st…
View article: Performance Characterization of an xy-Stage Applied to Micrometric Laser Direct Writing Lithography
Performance Characterization of an xy-Stage Applied to Micrometric Laser Direct Writing Lithography Open
This article concerns the characterization of the stability and performance of a motorized stage used in laser direct writing lithography. The system was built from commercial components and commanded by G-code. Measurements use a pseudo-p…
View article: Visual in-plane positioning of a Labeled target with subpixel Resolution: basics and application
Visual in-plane positioning of a Labeled target with subpixel Resolution: basics and application Open
Vision is a convenient tool for position measurements. In this paper, we present several applications in which a reference pattern can be defined on the target for a priori knowledge of image features and further optimization by software. …