Real-time blood flow visualization using the graphics processing unit
نویسندگان
چکیده
منابع مشابه
Real-time blood flow visualization using the graphics processing unit.
Laser speckle imaging (LSI) is a technique in which coherent light incident on a surface produces a reflected speckle pattern that is related to the underlying movement of optical scatterers, such as red blood cells, indicating blood flow. Image-processing algorithms can be applied to produce speckle flow index (SFI) maps of relative blood flow. We present a novel algorithm that employs the NVI...
متن کاملReal-time 4D signal processing and visualization using graphics processing unit on a regular nonlinear-k Fourier-domain OCT system
We realized graphics processing unit (GPU) based real-time 4D (3D+time) signal processing and visualization on a regular Fourier-domain optical coherence tomography (FD-OCT) system with a nonlinear k-space spectrometer. An ultra-high speed linear spline interpolation (LSI) method for lambda-to-k spectral re-sampling is implemented in the GPU architecture, which gives average interpolation speed...
متن کاملLocal Binary Pattern Based Texture Analysis in Real Time using a Graphics Processing Unit (long version)
This paper presents a novel implementation of the “Local Binary Pattern” (LBP) texture analysis operator on a consumer-grade graphical processing unit (GPU), which yields a 14 to 18-fold run time reduction compared to standard CPU implementations. The obtained result allows the application of this powerful texture analysis method for tasks requiring both high resolution and real time performanc...
متن کاملReal-time geometric lens distortion correction using a graphics processing unit
Optical imaging systems often suffer from distortion artifacts which impose important limitations on the direct interpretation of the images. It is possible to correct for these aberrations through image processing, but due to their calculation-intensive nature, the required corrections are typically performed offline. However, with image-based applications that operate interactively, real-time...
متن کاملReal-time resampling in Fourier domain optical coherence tomography using a graphics processing unit.
Fourier domain optical coherence tomography (FD-OCT) requires either a linear-in-wavenumber spectrometer or a computationally heavy software algorithm to recalibrate the acquired optical signal from wavelength to wavenumber. The first method is sensitive to the position of the prism in the spectrometer, while the second method drastically slows down the system speed when it is implemented on a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biomedical Optics
سال: 2011
ISSN: 1083-3668
DOI: 10.1117/1.3528610