| Patent Number |
Title Of Patent |
Date Issued |
| 6760401 |
Apparatus and method for processing of digital images |
July 6, 2004 |
| This invention relates to an apparatus and method for improved display of small dark structures such as in particular coronary blood vessels in digital X-ray images. A live image (S) is initially subjected to multiscale decomposition in which firstly multiple uses of low pass filteri |
| 6295336 |
X-Ray examination apparatus with dose control |
September 25, 2001 |
| An x-ray examination apparatus comprises an x-ray source for generating an x-ray image and an image analysis system derives brightness variations from the x-ray image and derives a dose control signal dependent on said brightness variations in order to control the x-ray source. The image |
| 6252931 |
Processing method for an original image |
June 26, 2001 |
| The invention relates to an image processing method in which an original image is first decomposed into a series of detail images, with each of which there is associated a respective spatial frequency range, low contrasts being enhanced before assembly of a final image from the images |
| 6173084 |
Noise reduction in an image |
January 9, 2001 |
| The invention discloses a method of processing an image including the steps of decomposing the image into detail images at successive resolution levels. The detail images at successive resolution levels contain image information at respective spatial scales. Filtering of detail images is |
| 6049623 |
Directional adaptive noise reduction |
April 11, 2000 |
| An image is processed taking into account the direction of a predominant structure of the image. Said predominant direction is derived from image information in the image. In particular, the covariance matrix having matrix elements depending on products of differences between pixel-value |
| 5825846 |
Noise reduction in an image |
October 20, 1998 |
| In a method of processing an image the image is divided in one or more blocks. Separate blocks are spatially frequency transformed in that pixel-values of the blocks are transformed into spectral coefficients. A noise level of the image is estimated and reduced spectral coefficients |
| 5708693 |
Image processing for noise reduction |
January 13, 1998 |
| An image processing method includes multi-resolution decomposition to decompose an input image into frequency-band images, which are subsequently filtered according to an order statistics filtering. Preferably, a finite impulse response median hybrid is employed. The filtered frequen |
| 5654772 |
Method for change detection in moving images |
August 5, 1997 |
| A method and system for detecting changes in moving images, wherein the system includes an image pick-up unit (3), an arithmetic unit (1), and a storage device (2). The image pick-up unit (3) records images by pixels. The arithmetic unit (1) files the video signals by pixels in the stora |
