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Medical ultrasound image denoising based on bitonic filtering and decomposition framework

An ultrasound image and image technology, applied in the field of medical ultrasound image denoising, can solve problems such as time-consuming, and achieve the effects of reducing time consumption, protecting image edge information, and improving medical denoising effect.

Inactive Publication Date: 2019-02-19
ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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Problems solved by technology

[0005] In order to overcome the shortcomings of traditional filtering methods in retaining image structure information, and in order to overcome the shortcomings of existing filtering methods that consume a lot of time, the present invention provides a medical ultrasound image removal method based on an image decomposition framework and a bitonic filter (bitonic filter). Noise algorithm, used to solve the denoising of medical ultrasound images

Method used

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  • Medical ultrasound image denoising based on bitonic filtering and decomposition framework
  • Medical ultrasound image denoising based on bitonic filtering and decomposition framework
  • Medical ultrasound image denoising based on bitonic filtering and decomposition framework

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings.

[0051] A denoising method for medical ultrasound images based on bitonic filtering and decomposition framework, the steps are as follows:

[0052] Step 1) Decompose the image through the decomposition framework.

[0053] The ultrasonic image I is decomposed, and three components C1, C2, and C3 can be obtained after decomposing. The formula for decomposing is as follows:

[0054]

[0055] The components C1 and C3 respectively contain the details and approximate information of the image, and C2 is the 0 component, where the definition formula of the operator K is as follows:

[0056]

[0057] In the above formula, λ is the smoothing parameter, and I x is the partial derivative of image I at point (x,y) with respect to x, I y is the partial derivative of image I at point (x, y) with respect to y, is the gradient of the image I at point (x, y), the experiment sh...

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Abstract

A medical ultrasound image denoising method based on bitonic filtering and a decomposition frame comprises the following steps: 1) decomposing the image through the decomposition frame; 2) constructing a rank filter; 3) carrying out morphological opening and close operations on C1 and C3 components; calculating and smoothing the opening and closing errors; 5) weighting and summing C1 and C3 components after opening and closing operation to obtain bitonic filtered components Crec1 and Crec3; 6) carrying out inverse transformation on that components Crec1 and Crec3 to obtain the final denoise image. The invention is compared with several algorithms in the denoising field through experimental analysis, and is effectively applied in the medical ultrasonic denoising field. The ultrasound imageis decomposed into three components by frame, and the bitonic filter is applied to two of them. Through a large number of experimental data comparison, a medical ultrasound image denoising method based on bitonic filtering and decomposition framework is proposed, which can better help physicians to analyze and diagnose.

Description

technical field [0001] The invention relates to a method for denoising medical ultrasonic images. Background technique [0002] With the development of science and technology, in the field of medical imaging, imaging technologies such as ultrasound imaging, CT, and MRI have been applied in medical clinical diagnosis. Ultrasound medicine is a discipline combining acoustics, medicine, optics and electronics. Acoustic medicine is the field of medicine that studies acoustic techniques above audible frequencies. It involves a wide range of contents and has high value in the prevention, diagnosis and treatment of diseases. [0003] Ultrasound imaging is to use ultrasonic beams to scan the human body, and obtain images of internal organs by receiving and processing reflected signals. There are many kinds of ultrasonic instruments commonly used: Type A (amplitude modulation type) indicates the strength of the reflected signal by the height of the amplitude, and what is displayed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/70
Inventor 张聚吕金城陈坚周海林
Owner ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
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