Search Results - "Bourquard, Aurélien"

Diffraction-unlimited imaging based on conventional optical devices by Ducros, Nicolas, Bourquard, Aurélien

“…We propose a computational paradigm where off-the-shelf optical devices can be used to image objects in a scene well beyond their native optical resolution. By…”
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Hessian-Based Norm Regularization for Image Restoration With Biomedical Applications by Lefkimmiatis, S., Bourquard, A., Unser, M.

“…We present nonquadratic Hessian-based regularization methods that can be effectively used for image restoration problems in a variational framework. Motivated…”
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Compressed imaging by sparse random convolution by Marcos, Diego, Lasser, Theo, López, Antonio, Bourquard, Aurélien

“…The theory of compressed sensing (CS) shows that signals can be acquired at sub-Nyquist rates if they are sufficiently sparse or compressible. Since many…”
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Binary Compressed Imaging by Bourquard, A., Unser, M.

“…Compressed sensing can substantially reduce the number of samples required for conventional signal acquisition at the expense of an additional reconstruction…”
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Anisotropic Interpolation of Sparse Generalized Image Samples by Bourquard, A., Unser, M.

“…Practical image-acquisition systems are often modeled as a continuous-domain prefilter followed by an ideal sampler, where generalized samples are obtained…”
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One-Bit Measurements With Adaptive Thresholds by Kamilov, U. S., Bourquard, A., Amini, A., Unser, M.

“…We introduce a new method for adaptive one-bit quantization of linear measurements and propose an algorithm for the recovery of signals based on generalized…”
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A practical inverse-problem approach to digital holographic reconstruction by Bourquard, Aurélien, Pavillon, Nicolas, Bostan, Emrah, Depeursinge, Christian, Unser, Michael

“…In this paper, we propose a new technique for high-quality reconstruction from single digital holographic acquisitions. The unknown complex object field is…”
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Visualization of blood cell contrast in nailfold capillaries with high-speed reverse lens mobile phone microscopy by McKay, Gregory N, Mohan, Nela, Butterworth, Ian, Bourquard, Aurélien, Sánchez-Ferro, Álvaro, Castro-González, Carlos, Durr, Nicholas J

“…Quantification of optical absorption gaps in nailfold capillaries has recently shown promise as a non-invasive technique for neutropenia screening. Here we…”
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Optical imaging using binary sensors by Bourquard, Aurélien, Aguet, François, Unser, Michael

“…This paper addresses the problem of reconstructing an image from 1-bit-quantized measurements, considering a simple but nonconventional optical acquisition…”
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Usability Evaluation of a Noninvasive Neutropenia Screening Device (PointCheck) for Patients Undergoing Cancer Chemotherapy: Mixed Methods Observational Study by Lamaj, Ganimete, Pablo-Trinidad, Alberto, Butterworth, Ian, Bell, Nolan, Benasutti, Ryan, Bourquard, Aurelien, Sanchez-Ferro, Alvaro, Castro-Gonzalez, Carlos, Jiménez-Ubieto, Ana, Baumann, Tycho, Rodriguez-Izquierdo, Antonia, Pottier, Elizabeth, Shelton, Anthony, Martinez-Lopez, Joaquin, Sloan, John Mark

“…Patients with cancer undergoing cytotoxic chemotherapy face an elevated risk of developing serious infection as a consequence of their treatment, which lowers…”
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Non-invasive detection of severe neutropenia in chemotherapy patients by optical imaging of nailfold microcirculation by Bourquard, Aurélien, Pablo-Trinidad, Alberto, Butterworth, Ian, Sánchez-Ferro, Álvaro, Cerrato, Carolina, Humala, Karem, Fabra Urdiola, Marta, Del Rio, Candice, Valles, Betsy, Tucker-Schwartz, Jason M., Lee, Elizabeth S., Vakoc, Benjamin J., Padera, Timothy P., Ledesma-Carbayo, María J., Chen, Yi-Bin, Hochberg, Ephraim P., Gray, Martha L., Castro-González, Carlos

“…White-blood-cell (WBC) assessment is employed for innumerable clinical procedures as one indicator of immune status. Currently, WBC determinations are obtained…”
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Adaptive Image Resizing Based on Continuous-Domain Stochastic Modeling by Kirshner, Hagai, Bourquard, Aurelien, Ward, John Paul, Porat, Moshe, Unser, Michael

“…We introduce an adaptive continuous-domain modeling approach to texture and natural images. The continuous-domain image is assumed to be a smooth function, and…”
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Automated detection of neutropenia using noninvasive video microscopy of superficial capillaries by Pablo‐Trinidad, Alberto, Butterworth, Ian, Ledesma‐Carbayo, María J., Vettenburg, Tom, Sánchez‐Ferro, Álvaro, Soenksen, Luis, Durr, Nicholas J., Muñoz‐Barrutia, Arrate, Cerrato, Carolina, Humala, Karem, Fabra Urdiol, Marta, Del Rio, Candice, Valles, Betsy, Chen, Yi‐Bin, Hochberg, Ephraim P., Castro‐González, Carlos, Bourquard, Aurélien

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A second-order extension of TV regularization for image deblurring by Dogan, Zafer, Lefkimmiatis, Stamatios, Bourquard, Aurelien, Unser, Michael

“…In this paper, we propose a novel second-order regularizer based on the maximum response of the second-order directional derivative, assuming that the image…”
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Wallcamera: Reinventing the Wheel? by Bourquard, Aurélien, Yan, Jeff

“…Developed at MIT CSAIL, the Wallcamera has captivated the public's imagination. Here, we show that the key insight underlying the Wallcamera is the same one…”
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Hessian-based regularization for 3-D microscopy image restoration by Lefkimmiatis, S., Bourquard, A., Unser, M.

“…We investigate a non quadratic regularizer that is based on the Hessian operator for dealing with the restoration of 3-D images in a variational framework. We…”
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Abstract PO1-07-05: Preliminary Evaluation in Breast Cancer of PointCheck: a Noninvasive AI-Based Neutropenia Monitoring Device by Garcia-Mosquera, Juan, Alva, Manuel, Iwase, Toshiaki, Lamaj, Ganimete, Tolosa, Pablo, Sánchez-Bayona, Rodrigo, Pelaez-Escobar, José, Pablo-Trinidad, Alberto, Benasutti, Ryan, Bourquard, Aurélien, Butterworth, Ian, Sánchez-Ferro, Alvaro, Castro-González, Carlos, Pérez-García, José Manuel, Martínez-Bueno, Alejandro, Ciruelos, Eva, Nasrazadani, Azadeh

“…Abstract Background Febrile neutropenia (FN) is a common complication that can arise in breast cancer patients receiving myelosuppressive chemotherapy and…”
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Differential Imaging Forensics: A Feasibility Study by Bourquard, Aurélien, Yan, Jeff

“…We motivate and develop a new line of digital forensics. In the meanwhile, we propose a novel approach to photographer identification, a rarely explored…”
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Image segmentation with background correction using a multiplicative smoothing-spline model by Madani, R., Bourquard, A., Unser, M.

“…This paper presents an image-segmentation method which compensates multiplicative distortions based on smooth regularity assumptions. In this work, we…”
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Resolution-invariant separable ARMA modeling of images by Bourquard, A., Kirshner, H., Unser, M.

“…We suggest a continuous-domain stochastic modeling of images that is invariant to spatial resolution. Specifically, we are proposing an estimator that is…”
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