Research and realization of signal processing algorithms based on FPGA in digital ophthalmic ultrasonography imaging.
- Author:
Simin FANG
;
Sheng ZHOU
;
Xiaochun WANG
;
Qingsheng YE
;
Ling TIAN
;
Jianjun JI
;
Yanqun WANG
- Publication Type:Journal Article
- MeSH: Algorithms; Data Compression; Diagnostic Imaging; Ophthalmology; Signal Processing, Computer-Assisted; Ultrasonography
- From:Chinese Journal of Medical Instrumentation 2015;39(1):1-4
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo design and improve signal processing algorithms of ophthalmic ultrasonography based on FPGA.
METHODSAchieved three signal processing modules: full parallel distributed dynamic filter, digital quadrature demodulation, logarithmic compression, using Verilog HDL hardware language in Quartus II.
RESULTSCompared to the original system, the hardware cost is reduced, the whole image shows clearer and more information of the deep eyeball contained in the image, the depth of detection increases from 5 cm to 6 cm.
CONCLUSIONThe new algorithms meet the design requirements and achieve the system's optimization that they can effectively improve the image quality of existing equipment.