Research and Realization of Signal Processing Algorithms Based on FPGA in Digital Ophthalmic Ultrasonography Imaging
10.3969/j.issn.1671-7104.2015.01.001
- VernacularTitle:基于FPGA的数字化眼科超声成像中信号处理算法的研究与实现
- Author:
Simin FANG
1
;
Sheng ZHOU
;
Xiaochun WANG
;
Qingsheng YE
;
Ling TIAN
;
Jianjun JI
;
Yanqun WANG
Author Information
1. 北京协和医学院中国医学科学院生物医学工程研究所
- Keywords:
ophthalmic ultrasonography;
digital signal processing;
dynamic filter;
quadrature demodulation;
logarithmic compression
- From:
Chinese Journal of Medical Instrumentation
2015;(1):1-4
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design and improve signal processing algorithms of ophthalmic ultrasonography based on FPGA. Methods Achieved three signal processing modules: full parallel distributed dynamic filter, digital quadrature demodulation, logarithmic compression, using Verilog HDL hardware language in Quartus II. Results Compared to the original system, the hardware cost is reduced, the whole image shows clearer and more information of the deep eyebal contained in the image, the depth of detection increases from 5 cm to 6 cm. Conclusion The new algorithms meet the design requirements and achieve the system’s optimization that they can effectively improve the image quality of existing equipment.
