Institut Pasteur

Vitadx International

Centre National De La Recherche Scientifique

Alexandre Bouyssoux

Riadh Fezzani

Jean-Christophe Olivo-Marin

Thibaut Troude

Florent Couzinié-devy

Jean-Christophe Olivo-marin

A computer-implemented and a device for analysis of a digital cytology slide of a biological sample. The biological sample having been previously collected from a subject suspected to be suffering from bladder cancer, the device including: at least one input configured to receive at least one digital cytology slide obtained from the biological sample; at least one processor configured to: detect cells of interest from the at least one digital cytology image; for each cell of interest, compute a features vector including at least one feature calculated on each cell of interest; define a bag of k instances for each digital cytology slide; calculating a global prediction score representative of a probability of presence of bladder cancer and/or a stage of bladder cancer for the subject; at least one output configured to provide the global prediction score.

Method for identifying abnormalities in cells of interest in a biological sample

A method for generating a color-faithful extended-depth-of-field (EDF) image from a color volume of 2D images acquired at different focal depths using a microscope. The method involves: generating a grayscale volume; applying invertible color-to-grayscale transformation to the volume; applying wavelet transform to the grayscale volume to obtain a 3D wavelet-coefficient-matrix (WCM); selecting wavelet coefficients using a coefficient selection rule; generating a 2D-WCM and a 2D coefficient-map (CM); applying inverse transformation of the wavelet transform to the 2D-WCM to obtain a 2D grayscale EDF image; generating a 2D color-composite(CC) image; applying inverse transformation of the color-to-grayscale transformation to the 2D grayscale EDF image to obtain a 2D color EDF image; converting the 2D-CC image and the 2D color EDF image into a color space including chromaticity and intensity component(s); and concatenating, chromaticity component(s) of the 2D-CC image and intensity component(s) of the 2D color EDF image, to obtain a color-faithful EDF image.

Multi-channel extended depth-of-field method for automated digital cytology

Growing community of inventors

Paris, France

Alexandre Bouyssoux