Method and device for reducing noise in ultrasound image

A technology of ultrasonic images and image data, applied in the field of image processing, can solve the problems of large amount of calculation, loss of image information, difficult practical application, etc., and achieve the effect of simple algorithm, real-time processing, and easy hardware implementation

Active Publication Date: 2012-01-04
EDAN INSTR
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[0006] The disadvantage of the above-mentioned patented method is that: according to the mathematical statistical characteristics of pixels in a certain neighborhood, the pixels are simply d

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  • Method and device for reducing noise in ultrasound image
  • Method and device for reducing noise in ultrasound image
  • Method and device for reducing noise in ultrasound image

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[0050] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0051] like figure 1 Shown is a structural block diagram of a typical ultrasound imaging system, which consists of a main controller, a probe, beamforming, image processing, digital scan conversion (DSC, digital scan conversion), and a display. Under the control of the main controller, the probe emits ultrasonic waves of a certain frequency, and after a certain time delay, receives the acoustic wave signal reflected by the tissue, and forms a scanning line after focusing delay, weighted summation, and then filtering, A series of digital signal processing such as wave detection obtains th...

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Abstract

The invention relates to an image processing technique, particularly relates to an image data processing technique in an ultrasound image, and more particularly to a method and a device for reducing noise in the ultrasound image. The method provided by the invention comprises the following steps: reading ultrasound image data; selecting an adjacent region with each pixel point as a center; computing the variance mean value ratio of the pixel points in each direction in the adjacent regions; computing discrimination factors according to the variance mean value ratio; respectively distinguishing the adjacent regions of the pixel points as an edge region, a non-edge region and a semi-edge region according to the discrimination factors; respectively carrying out filtering processing on the different edge regions; and outputting the processed ultrasound image data. According to the technical scheme provided by the invention, the edge enhancement and spot suppression of images can be simultaneously realized; and the method provided by the invention has the advantages of simple algorithm, self adaptation, strong practicality and the like, is easy to achieve by hardware, and can be conducted in real time.

Description

technical field [0001] The present invention relates to image processing technology, in particular to image data processing technology in ultrasonic imaging, especially a method and device for ultrasonic image denoising. Background technique [0002] In medical ultrasound imaging, due to the inhomogeneity of the imaging organ or tissue structure, some tiny structures cannot be resolved, and the interference phenomenon of the acoustic wave signal forms unique spots on the ultrasound image. The image quality is reduced. At present, the commonly used denoising algorithms mainly include resolution enhancement, superposition averaging and post-processing methods. [0003] The resolution enhancement algorithm mainly enhances the resolution of the ultrasound system to achieve the purpose of noise reduction. Such methods include increasing the probe frequency, coded excitation (Coded-excitation), array probe (Matrix-array transducer) and harmonics (Harmonics), but the probe frequen...

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Application Information

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IPC IPC(8): G06T5/00
Inventor 凌锋齐保春
Owner EDAN INSTR
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