Time compounding method and device based on ultrasonic sequence similarity

A technology of sequence similarity and composite devices, which is applied in image data processing, instrumentation, informatics, etc., can solve the problems of not making full use of the signal-to-noise ratio of frame-related images and reducing the value of frame-related technologies, so as to avoid edge blur or even smearing , maintain image edge features, smooth speckle noise effect
CN110415179AInactive Publication Date: 2019-11-05聚融医疗科技(杭州)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
聚融医疗科技(杭州)有限公司
Publication Date
2019-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a time compounding device based on ultrasonic sequence similarity, and the device comprises a signal preprocessing unit which is used for carrying out the low-pass filtering and edge enhancement of a two-dimensional signal; a signal segmentation unit which is used for segmenting the processed two-dimensional signal into a plurality of rectangular neighborhoods with the samesize; a classification unit which is used for dividing the plurality of segmented two-dimensional signal neighborhoods into an edge organization class, a uniform organization class and a noise class;a first calculation unit which is used for calculating the similarity between the two-dimensional signal neighborhood of the current frame and the two-dimensional signal neighborhood corresponding tothe previous frame; a second calculation unit which is used for calculating a time composite coefficient according to the obtained similarity; and a time compounding unit which is used for carrying out time compounding on the two-dimensional signal neighborhood of the current frame and the two-dimensional signal neighborhood corresponding to the previous one or more frames through the obtained time compounding coefficient.
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Description

technical field

[0001] The invention relates to the technical field of ultrasound imaging, in particular to a time compounding method and device based on ultrasound sequence similarity. Background technique

[0002] Medical ultrasound images often degrade image quality (such as resolution and signal-to-noise ratio) due to the electronic noise of the hardware system and speckle noise caused by tissue echo coherence, making clinical diagnosis difficult. Algorithms for suppressing electronic noise and speckle noise can be divided into adaptive filtering and composite imaging techniques. Composite imaging technology is the weighted superposition of continuous or non-continuous frame images with certain correlation, which can reduce noise and improve image quality, including spatial compounding, frequency compounding and time compounding. Time compounding is realized by frame correlation technology, which is to select continuous frames at a certain time point in the image time p...

Claims

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