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Method and device for correlating adaptive frames

A frame-related and adaptive technology, applied in image data processing, instrumentation, computing, etc., can solve problems such as difficulty in suppressing noise, weak frame correlation, and large noise impact, avoiding motion blur, improving image quality, and suppressing noise. Effect

Active Publication Date: 2009-09-09
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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Problems solved by technology

[0008] In the prior art, the method of determining the frame correlation coefficient based on pixels is relatively affected by noise
For example, if a pixel does not have a large motion in two adjacent frames, then the gray value should be relatively close, but due to the existence of noise, the actual gray value may differ greatly, then the pixel-based method will get A smaller frame correlation coefficient, and then a weaker frame correlation, so it is difficult to achieve the purpose of suppressing noise
On the contrary, if the gray value of the originally violently moving pixels has a small difference in the two frames due to the influence of noise, then the pixel-based method will obtain a larger frame correlation coefficient, and then perform a stronger frame correlation , resulting in motion blur

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Embodiment Construction

[0041] figure 1 It is a schematic diagram of the principle of B-mode ultrasound imaging. The pulse signal sent by the probe enters the human body and is received by the probe after being reflected by the tissue of the human body, and then the received echo data undergoes the following processing: receiving beamforming, dynamic filtering, envelope detection, logarithmic compression, dynamic range change and adaptive frame relevant and displayed last.

[0042] figure 2 It is a schematic diagram of performing adaptive frame correlation on image data according to an embodiment of the present invention. The sequence X(K) represents the image data collected by the system, and the sequence Y(K) represents the image data after adaptive frame correlation, where K=0,..., u-1, u,..., v- 1, ..., v, ..., and both u and v are natural numbers, and K is a non-negative integer.

[0043] image 3 It is a schematic diagram of an adaptive frame correlation method according to an embodiment ...

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Abstract

The invention provides a method and a device for correlating adaptive frames. In the method and the device, a current frame image is divided into a plurality of subblocks, and characteristics of each subblock in the plurality of subblocks are acquired so as to obtain a characteristic image of the current frame image; a frame correlation factor of each subblock in the plurality of subblocks is determined according to the characteristic image of the current frame image and a characteristic image of a previous frame image; and the frame correlation factor of each subblock in the plurality of subblocks is utilized to perform frame correlation on a result image of the previous frame image after the frame correlation and the current frame image so as to obtain a result image of the current frame image after the frame correlation. The method and the device effectively inhibit noise, improve the image quality, reduce and avoid the motion blur caused by frame correlation calculation at the same time, and improve the efficiency of processing the frame correlation.

Description

technical field [0001] The present invention relates to the field of ultrasound imaging, and more particularly, to a method and apparatus for adaptive frame correlation for an ultrasound imaging system. Background technique [0002] In a B-mode ultrasound imaging system, the noise that affects image quality (such as contrast resolution, signal-to-noise ratio) usually includes random noise and speckle noise of the hardware system. In order to improve the image quality, composite technology is adopted in the ultrasound imaging system, including spatial composite technology, frequency composite technology and time composite technology. Temporal compounding technology, that is, frame correlation technology, can reduce noise in black and white ultrasound images, improve image contrast resolution and signal-to-noise ratio, thereby improving image clarity and readability. Furthermore, time compounding technology is often used in ultrasound imaging systems due to its low implementa...

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Application Information

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IPC IPC(8): G06T5/00G06T7/20A61B8/14
CPCG06T2207/10132G06T5/50G06T2207/20021
Inventor 桑茂栋王勇张羽
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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