Patent number: 4870692Abstract: Images formed by digital subtraction angiography are improved by subtracting a locally deformed image from another image. A subtraction image is obtained which is substantially free from motion artefacts and which contains only the information of a moving contrast medium. To achieve this, a shift vector is determined for various pixels and a reliability criterion is calculated for each direction component of said shift vector.Type: GrantFiled: November 30, 1987Date of Patent: September 26, 1989Assignee: U.S. Philips CorporationInventors: Karel J. Zuiderveld, Barend Marius ter Haar Romenij
Patent number: 10713563Abstract: A method of object recognition trains a convolutional neural network (CNN) with a set of training images, then classifies an image of an object using the trained CNN. A first layer of the CNN is trained by generating a set of first convolutional filters from eigenvectors produced from linear principal component analysis of patches of the training images. The training of each of multiple hidden layers CNN includes generating a set of convolutional filters from a selected subset of eigenvectors produced from linear principal component analysis of patches of an affinity matrix constructed using a set of prior convolutional filters from a prior layer of the CNN, where the affinity matrix represents correlations of feature vectors associated with the prior layer. The last layer of the CNN is trained with a regular classifier by error back-propagation using the training images and labels associated with the training images.Type: GrantFiled: November 27, 2017Date of Patent: July 14, 2020Assignee: Technische Universiteit EindhovenInventors: Barend Marius ter Haar Romenij, Samaneh Abbasi Sureshjani.
Publication number: 20110174958Abstract: A photosensitive sensor cell includes a photosensitive element with a detection surface for receiving light. The element is manufactured from a material of which at least one electrically measurable quantity is changeable under the influence of light. The element further includes electrodes for making the quantity measurable such that a property of the light can be determined. The element has a pointed shape, which renders a robust decorrelation possible so as to obtain super-resolution.Type: ApplicationFiled: June 18, 2009Publication date: July 21, 2011Applicant: Technische Universiteit EindhovenInventors: Cornelis Francois Christiaan Weststrate, Barend Marius ter Haar Romenij.