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

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...