Signal-noise-ratio-post-filtering-and-characteristic-space-fusion minimum-variance ultrasonic imaging method
An ultrasonic imaging method and a technique of minimum variance, applied in ultrasonic/acoustic/infrasonic diagnosis, image enhancement, acoustic diagnosis, etc., can solve problems such as not being able to significantly improve image contrast and resolution
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[0062] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0063] figure 1 It is an algorithm flow chart of the present invention, as shown in the figure, the present invention provides a minimum variance ultrasonic imaging algorithm for signal-to-noise ratio post-filtering and feature space fusion, including the following steps:
[0064] Step S1: Amplify and AD convert the echo signal and perform delay focus processing to obtain the signal x(k) after focus delay processing, and x(k) is expressed as x(k)=[x 1 (k),x 2 (k),...,x N (k)], where N represents the number of array elements of the ultrasonic array, and k represents the sampling moment corresponding to the sampling depth.
[0065] Step S2: The receiving array is sequentially divided into a sub-array with overlapping array elements, and then the echo signals of the corresponding receiving sub-array are subjected to forward-backward smoothi...
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