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High-precision real-time ultrasonic image scan conversion method

An ultrasonic image, high-precision technology, applied in the direction of ultrasonic/acoustic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc., can solve the problem of insufficient precision of the scan conversion module, achieve simplified proxy geometric model, reduce CPU burden, and ensure quality Effect

Active Publication Date: 2010-11-17
CHISON MEDICAL TECH CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the accuracy of the scan conversion module used in the current ultrasonic diagnostic equipment is not high enough, to provide a high-precision real-time ultrasonic image scan conversion method, using a GPU-based computing architecture, by drawing a suitable proxy geometric model, All the coordinate transformation and image interpolation algorithms in the scan transformation module are placed in the GPU for high-precision calculation of 32-bit floating-point numbers, and at the same time, high-precision bicubic interpolation algorithms are used to obtain optimized image quality

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[0043] It should be noted that the RGBA four-channel texture format is used in the present invention, and each channel is a 32-bit floating-point number. This is to ensure high-precision calculations on the one hand, and to speed up the image interpolation algorithm on the other. Detailed instructions are given in step 4.

[0044] In step 2, the proxy geometric model is generated, and then the proxy geometric model is transmitted to the GPU through a drawing command of a graphics API such as OpenGL or DirectX, and the GPU performs a rasterization operation on it to generate a raster fragment (Fragment) one by one, and then the The Fragment Shader of the GPU processes each Fragment. The selection of the proxy geometric model is very important, and it should not be too complicated, otherwise it will cause a large burden on the CPU to calculate the vertex coordinates of the proxy geometric model, and it will also cause too much data to be transmitted to the GPU through the AGP bu...

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Abstract

The invention discloses a high-precision real-time ultrasonic image scan conversion method comprising the steps: putting coordinate conversion and an image interpolation algorithm in a scan conversion module into GPU by using a parallel calculation frame and an SIMD vector operation base on a GPU and drawing a proper agent geometric model to carry out 32 bit floating point number high-precision calculation; and smoother image quality is obtained by using an optimal high-precision bicubic interpolation algorithm. The high-precision real-time ultrasonic image scan conversion method can achieve scan conversion speed over 60 frame / second for large-scale data of 1024 sampling points on each line of 512 line data on present common middle and low level display cards, sufficiently develop and usestronger parallel computation capability supplied by the present GPU, and thereby the traditional scan conversion module is upgraded into a next-generation high-definition scan conversion module.

Description

technical field [0001] The invention relates to a high-precision real-time ultrasonic image scanning transformation method, which is used for medical ultrasonic diagnosis equipment. Background technique [0002] Ultrasonic echo imaging technology has been widely used in military, medical and other fields. By transmitting ultrasonic waves to the target area, the receiving device receives the reflected echo signals, and suppresses the echo signals through signal processing technology and image processing technology. The useless parts in the final form the image of the target area. [0003] In the medical field, which is closely related to each of us's daily life, ultrasonic echo imaging technology has achieved considerable development. At present, various medical ultrasonic diagnostic equipment such as B-ultrasound have been widely used in clinical diagnosis in various hospitals. In addition to the traditional The black-and-white ultrasound can observe the anatomical structur...

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Application Information

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IPC IPC(8): A61B8/14A61B8/00G06F19/00
Inventor 赵明昌莫善珏
Owner CHISON MEDICAL TECH CO LTD
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