Denoising method for image of portable B-type ultrasonic diagnosis equipment
A portable technology for ultrasonic diagnosis, applied in the field of ultrasonic images, can solve problems such as image noise, low resolution, and affecting the imaging quality of equipment, and achieve the effect of improving image fineness and improving computing speed
Active Publication Date: 2020-01-17
HARBIN INST OF TECH
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Problems solved by technology
[0004]Due to the problems of electromagnetic interference noise, low resolution and image noise in the portable B-type ultrasonic diagnostic equipment, the imaging quality of the equipment is seriously affected
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[0047] The specific implementation manner of the present invention will be described below in conjunction with the examples and accompanying drawings. The denoising method based on the pixel difference index and the noise algorithm generated by removing electromagnetic interference are implemented on the portable ultrasonic diagnostic equipment.
[0048] The portable ultrasonic diagnostic equipment uses the front-end hardware circuit as the client, which is responsible for generating ultrasonic signals, receiving echo signals, and performing related processing on the signals. Then it is received by the server in the way of wireless transmission, and the server is responsible for processing and displaying the received signal.
[0049] Execution step 1: implement an algorithm for removing noise generated due to electromagnetic interference. Firstly, the received ultrasonic signal is preprocessed, and the original 16-bit data is converted into 8-bit unsigned integer data. At th...
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The invention discloses a denoising method for an image of portable B-type ultrasonic diagnosis equipment, and relates to an image processing algorithm based on a search method in a graph theory and spatial domain denoising. The method comprises the following steps: 1, removing image noise caused by electromagnetic interference, and filtering noise from the distribution characteristic of spatial domain noise; 2, providing a pixel difference index Pd, partitioning and classifying the image through the parameter Pd, and processing each different type of partition, so that a denoising effect is achieved; and 3, performing GPU acceleration on the denoising algorithm based on the pixel difference index Pd, so that the requirement of ultrasonic real-time performance is met. The basic idea of themethod is to distinguish image neighborhood types and denoise based on definition of an image space domain and a pixel difference index, and accelerate an algorithm to meet the real-time requirement.The problems of unique interference noise of portable B-type ultrasound and too low calculation speed of an algorithm are solved, and the method has high economic benefits.
Description
technical field [0001] The invention relates to the technical field of ultrasonic images, in particular to a method for identifying irregular noise blocks based on breadth-first search in graph theory and an image processing algorithm for denoising in space domain. Background technique [0002] With the advancement of social science and technology, the performance of various embedded hardware devices has also been improved, which provides conditions for the portability of traditional ultrasonic medical diagnostic equipment. However, the reduction of the size of the equipment is not conducive to the electromagnetic shielding of the diagnostic equipment, and the characteristics of wireless transmission will slow down the speed of data transmission. Therefore, the image displayed by the current portable ultrasonic diagnostic equipment has some noises that the traditional ultrasonic diagnostic equipment does not have, and the speed of image display is also slowed down. These ar...
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IPC IPC(8): G06T5/00G06T7/13
CPCG06T7/13G06T2207/10132G06T5/70
Inventor 章欣于佳欣王艳沈毅
Owner HARBIN INST OF TECH