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Image domain de-noising

A technology of image domain and image data, applied in the field of image domain denoising, which can solve problems such as restrictions and constraints

Active Publication Date: 2014-07-30
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The algorithm is effective at removing noise from image volumes while preserving edges, but the results are constrained by the limitation on the total variation loss

Method used

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Examples

Experimental program
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Embodiment Construction

[0015] figure 1 An imaging system 100 such as a computed tomography (CT) scanner is schematically illustrated. Imaging system 100 includes a generally stationary gantry 102 and a rotating gantry 104 . The rotating gantry 104 is rotatably supported by the stationary gantry and rotates about the examination region 106 about a longitudinal or z-axis.

[0016] A radiation source 110 , such as an X-ray tube, is rotatably supported by and rotates with the rotating gantry 104 and emits radiation through the examination region 106 . A one-dimensional or two-dimensional radiation sensitive detector array 112 faces an angular arc across the examination region 106 opposite the radiation source 110 and detects radiation passing through the examination region 106, generating projection data indicative thereof.

[0017] A reconstructor 116 reconstructs the projection data and generates three-dimensional (3D) volumetric image data indicative thereof. The reconstructor 116 may employ conve...

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Abstract

An image data processing component (122) includes algorithm memory (212) including one or more image domain only iterative de-noising algorithms (214) based on the Huber roughness penalty minimization and a processor (206) which de-noises reconstructed image data solely in the image domain based on at least one of the Huber roughness penalty iterative minimization algorithms.

Description

technical field [0001] The following generally relates to denoising reconstructed image data and has specific application to computed tomography (CT) scanners, but can also be used with other scanners such as hybrid PET / CT systems, digital X-ray systems, and / or other imaging scanning machine. Background technique [0002] A multislice computed tomography (CT) scanner includes an X-ray tube mounted on a rotatable gantry that rotates about an examination region about a longitudinal or z-axis. The X-ray tube emits radiation through the examination region and the subject or object therein. The two-dimensional detector array is opposite to the X-ray tube by an angular arc opposite the inspection area. The detector array includes a plurality of rows of detectors aligned relative to each other and extending along the z-axis. The detectors detect radiation passing through the examination region and the subject or object therein and generate projection data indicative thereof. A ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10072G06T2207/20076G06T2207/30004G06T5/70G06T5/00G06V10/30
Inventor S·扎比奇K·M·布朗
Owner KONINKLJIJKE PHILIPS NV
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