Patents Assigned to VRVis Zentrum für Virtual Reality und Visualisierung
  • Publication number: 20230377323
    Abstract: A method of augmenting the number of labeled images for training a neural network comprising the steps of—Starting from a dataset of labeled images with corresponding segmentation masks and a dataset of unlabeled images, gathering for a given image i in a data set of labeled images a number of images with similar metadata in said dataset of unlabeled images so as to form data sub-set Sim i,—Training a multiclass segmentation neural network on said labeled images thereby generating segmentation masks for the images in subset Sim i,—On the basis of these segmentation masks judging similarity between images of Sim i and image i and finding the most similar image(s) in Sim i by computing and comparing histograms of segmentation masks of image i and images in Sim i—Transferring the histogram of the most similar images in Sim i to given image i.
    Type: Application
    Filed: October 1, 2021
    Publication date: November 23, 2023
    Applicants: AGFA NV, VRVIS Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH
    Inventors: Astrid Berg, Eva Vandersmissen, Katja Buehler
  • Publication number: 20230177683
    Abstract: A neural network, trained for the task of deriving the attribution of image regions that significantly influence classification in a tool for pathology classification, comprising (i) a contracting branch, (ii) an attenuation module, (iii) an interconnected upsampling branch, and (iv) a final mapping module.
    Type: Application
    Filed: June 2, 2021
    Publication date: June 8, 2023
    Applicants: AGFA Healthcare NV, VRVIS Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH
    Inventors: Dimitrios Lenis, David Major, Maria Wimmer, Gert Sluiter, Astrid Berg, Katja Buehler
  • Publication number: 20230144724
    Abstract: A method for finding image regions that significantly influence classification in a tool for pathology classification in a medical image wherein image regions that influence classification are inpainted, by replacing the pixels in these regions by representations of heathy tissue, resulting in an image with a healthy classification-score in the classification tool.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 11, 2023
    Applicants: AGFA Healthcare NV, VRVIS Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH
    Inventors: David Major, Dimitrios Lenis, Maria Wimmer, Gert Sluiter, Astrid Berg, Katja Buehler
  • Patent number: 11210792
    Abstract: A method for training an artificial neural network on an additional untrained segmentation task prevents the loss of previously acquired segmentation skills on originally trained segmentation tasks.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 28, 2021
    Assignees: Agfa HealthCare NV, VRVis Zentrum für Virtual Reality und Visualisierung Forschungs-GmbH
    Inventors: Alexey Novikov, Katja Buehler, David Major, Maria Wimmer
  • Patent number: 11055851
    Abstract: A pipe-line method for multi-label segmentation of anatomic structures in a medical image using a convolutional neural network trained with a weighted loss function takes into account under—representation of at least one anatomical structure in a ground-truth mask relative to other anatomical structures. Different architectures for the convolutional neural network are described.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: July 6, 2021
    Assignees: Agfa HealthCare NV, VRVis Zentrum für Virtual Reality und Visualisierung
    Inventors: Alexey Novikov, David Major, Dimitrios Lenis, Maria Wimmer, Katja Buehler
  • Patent number: 9763635
    Abstract: A method, apparatus, and system for reliably identifying a specific part of a spine in an image of a human or animal body, includes the steps of determining one or more parts of the spine in the image, determining one or more discriminative parameters for each of the one or more parts of the spine in the image, the discriminative parameters relating to at least one anatomical property of each of the one or more parts of the spine, classifying the discriminative parameters of the one or more parts of the spine in the image, and identifying a specific part of the spine based on the classification of the discriminative parameters of the one or more parts of the spine in the image. An identified vertebra, in particular the T12 vertebra and/or its associated intervertebral discs, can be used advantageously as a starting point of powerful automatic spine labeling algorithms.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: September 19, 2017
    Assignees: AGFA HEALTHCARE NV, VRVIS ZENTRUM FÜR VIRTUAL REALITY UND VISUALISIERUNG FORSCHUNGS-GMB, IMP FORSCHUNGINSTITUT FÜR MOLEKULARE PATHOLOGIE GMBH
    Inventors: Jiri Hladuvka, David Major, Katja Buehler