1
Pieter Vuylsteke, Piet Dewaele: Method and apparatus for noise reduction. Agfa Gevaert, Richard J Birch, October 24, 1995: US05461655 (75 worldwide citation)

A noise reducing method and associated apparatus for use in a medical radiographic imaging system wherein an image represented by an array of pixels is processed and the processed image is recorded on a recording medium or visualized on a display monitor. The processing comprises the steps of


2
Francis Labaere, Pieter Vuylsteke: Image contrast enhancing method. Agfa Gevaert, Richard J Birch, February 10, 1998: US05717791 (54 worldwide citation)

A contrast enhancing processing method is disclosed that is based on a transformation of an original image into a multiresolution edge representation based on a wavelet transform. The multiresolution edge representation is modified and subsequently subjected to a reconstruction procedure. Different ...


3
Christiaan Fivez, Pieter Vuylsteke: Radiographic calibration phantom. Agfa Gevaert, Richard J Birch, February 20, 1996: US05493601 (44 worldwide citation)

A phantom for determining attenuation by a combination of materials of polychromatic X-rays comprises a number of tubes that can be positioned in between a source emitting said X-rays and an X-ray detector. The tubes are held in a position so that they are directed towards the position of a source o ...


4
Pieter Vuylsteke: Method for enhancing the contrast of an image. Agfa Gevaert, Houston Eliseeva, November 21, 2006: US07139416 (27 worldwide citation)

The contrast of an image is enhanced by converting the digital signal representation of the image according to a conversion function that is derived from a parameterized conversion function q(x) by giving specific values to the parameters of the function. Specific values for parameters that depend o ...


5
Koen Van de Velde, Pieter Vuylsteke: Method for correcting artefacts in a digital image. Agfa Gevaert, John A Merecki, Hoffman Warnick & D&apos Alessandro, September 7, 2004: US06788826 (17 worldwide citation)

A method of correcting artefacts in a processed digital image represented by a multi-scale gradient representation being obtained by non-linear processing of a multi-scale gradient representation of an original image. A modified gradient representation is generated by modifying gradient images of th ...


6
Christiaan Fivez, Pieter Vuylsteke: Partially-transparent-shield-method for scattered radiation compensation in x-ray imaging. Agfa Gevaert, Richard J Birch, February 11, 1997: US05602895 (11 worldwide citation)

The disclosed methods for generating scatter-compensated radiation image are based on one irradiating shot of the object. By comparing the detected signal under a partially transparent body (ea. disk or strip), positioned between the x-ray source and the object being imaged, with the signal in the i ...


7
Pieter Vuylsteke: Method and user interface for modifying at least one of contrast and density of pixels of a processed image. AGFA Healthcare, Leydig Voit & Mayer, November 20, 2007: US07298383 (6 worldwide citation)

An image which has been subjected to image processing wherein contrast amplification and density can be specified independently is displayed on a display screen. The contrast of all pixels in the displayed image is changed upon movement of an indicium in a first direction and the density of all pixe ...


8
Pieter Vuylsteke: Method of normalising a digital signal representation of an image. Agfa HealthCare, Houston Eliseeva, January 22, 2008: US07321674 (6 worldwide citation)

A digital signal representation of an image is normalized by applying a normalization parameter to all pixels of the digital signal representation of the image or to the pixels of a multi-scale representation of the image. The normalization parameter can be derived from the digital signal representa ...


9
Pieter Vuylsteke: Method of monitoring the sensitivity of a system for reading a radiation image stored in a photostimulable phosphor screen. Agfa Gevaert, Richard J Birch, November 4, 1997: US05684888 (5 worldwide citation)

A method for monitoring the sensitivity of a system that reads a radiation image or an irradiated object with the radiation image being stored in a photostimulable phosphor screen. The method employs the steps of scanning the screen with stimulating irradiation, detecting the light emitted upon stim ...


10
Danny Janssens, Emile Schoeters, Pieter Vuylsteke, Frans Dhaenens: Radiation image displaying method and apparatus. Agfa Gevaert, Richard J Birch, April 1, 1997: US05616930 (5 worldwide citation)

Method and apparatus for displaying images obtained by reading out stimulable phosphor screens wherein radiation images are stored. A mosaic type image is composed by means of a plurality of read-out images and said mosaic type image is displayed on a preview monitor or on one of a plurality of prev ...