General Electric Company

General Electric Corporation Gmbh

Vincent Auvray

Jean Lienard

Vincent Jonas Bismuth

Régis Vaillant

Benjamin Didier Réne Wimille

A method for processing images in interventional radioscopy for detecting guiding instrumentation equipment. The method of the invention enables objects of longilinear or very curved shapes to be detected within the radioscopic image having very low contrast to noise ratios. In one embodiment, an algorithm enables the measured contrast to noise ratio of long or curved structures in the image to be considerably improved. To do this, an embodiment of the invention uses oriented, separable, recursive and rapid steerable detection filters. Said detection filters have a low calculation cost, even for long filters having several orientations.

Method for processing images in interventional radioscopy to detect guiding instrumentation equipment

A process and system for improving a digital image of an object defined by pixels, acquired at the instant t and generated from an X-ray detector receiving X-rays emitted by a source. The process includes: determining a predicted image of the object at the instant t as a function of the images of the object acquired at the instants t&#x2212;i, i being a positive whole number greater than or equal to 1, and moving of each of the layers constituting the image acquired at the instant t, the number of layers being previously fixed and the moving of each of the layers being previously determined; and generating a visualized image corresponding to a weighted sum of the predicted image and the image of the object acquired at the instant t, so as to attenuate the noise of the image of the object acquired at the instant t.

Method and system for treating noise in a generated image

A method for the processing of images in interventional radioscopy to produce a sequence of de-noised images in which elongated objects of guiding instrumentation equipment are preserved and enhanced. The method of the invention uses a tool for indicating the confidence to be placed in a given pixel as regards its belonging to a piece of guidance equipment. This tool is used to create a combination algorithm capable of re-injecting the pixels having a low contrast-to-noise ratio into the de-noised image. This combination algorithm enables the enhancement solely of the pixels of the guidance equipment with a high confidence value so as not to produce artifacts with the enhancement of false positives.

Method for the processing of images in interventional radioscopy

A method and apparatus for reduction of noise in an image of a sequence of fluoroscopic images of an object in motion having a differentiation of the pixels of the image between pixels in motion and fixed pixels, and a processing wherein a time filtering operation of the fixed pixels. For each pixel of the image, the differentiation between a pixel in motion and a fixed pixel is performed as a function of the result of a detection of motion during which, in a zone of the image covering a set of pixels in the vicinity of the pixel, the existence or respectively the absence of motion of the object relative to a preceding image is detected.

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Paris, France

Vincent Auvray