2 . 4 GPU Accelerated Vector Median Filter GPU Accelerated Vector Median Filter

نویسندگان

  • Rifat Aras
  • Yuzhong Shen
چکیده

~ct~r r~e:~~~~~n j=a:~~e~a~~~t j~ea~ea~:~=i~ tasks. For t~ee chamel color jmag~, a widely used tecmique is expensive; for a window size of n x n each ~f the n~ vector: h:: ~=;r~~~·o~~ctor1 me1dla n ~It~ a~~ comp!J:alionally purp?se computation on graphics Processing urVts (GPUs) is the paradi m of ufliz" r "hi h voc Drs In Istances. General architectures f?r ~mputalion tasks that are normally handled by CPUs. In this ~rk. NVI~I~~ ec! -::erf~~~fi~~ m.any-cor~ GPU (C~DA) paradigm IS used to accelerate vector median filtering. which has to the best of our knowted~e neve b d ~ctitec~e pe or~ance?f GPU. accelerated vector median fi lter is com pared 10 that of the CPU and MPI-based ve~· een, °d~ff e or~ . e and Window Sizes, Initial findings of the stud h ed 100x ' IOns or I erent Image on GPUs over CPU implementations and fuJ~ro;pe_1ver ., 'mt~~veftment of perform,ance ~f ~ect?r median fi lter implementat ioo "'" up I expec "'" a er more extenSive optimizations of the GPU algor~hm .

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Fine-tuned High-speed Implementation of a GPU-based Median Filter

Median filtering is a well-known method used in a wide range of application frameworks as well as a standalone filter, especially for salt-and-pepper denoising. It is able to highly reduce power of noise while minimizing edge blurring. Currently, its existing algorithms and implementations have proved quite efficient but leave room for improvement as far as processing speed is concerned, which ...

متن کامل

Graphics Processor Unit (GPU) Accelerated Shallow Transparent Layer Detection in Optical Coherence Tomographic (OCT) Images for Real-Time Corneal Surgical Guidance

An image analysis algorithm is described that utilizes a Graphics Processor Unit (GPU) to detect in real-time the most shallow subsurface tissue layer present in an OCT image obtained by a prototype SDOCT corneal imaging system. The system has a scanning depth range of 6mm and can acquire 15 volumes per second at the cost of lower resolution and signal-to-noise ratio (SNR) than diagnostic OCT s...

متن کامل

A GPU-accelerated particle filter with pixel-level likelihood

We present in this paper a GPU-accelerated particle filter based on pixel-level segmentation and matching, for real-time object tracking. The proposed method achieves real-time perfomance, while computing for each particle the corresponding filled model silhouette through the rendering engine of the graphics card, and comparing it with the underlying binary map of the segmentation preprocess. W...

متن کامل

Performance Tuning for CUDA - Accelerated Neighborhood Denoising Filters

Ziyi Zheng and Klaus Mueller are with the Center for Visual Computing, Computer Science, Stony Brook University, Stony Brook, NY 11790 USA (phone: 631-632-1524; e-mail: {zizhen, mueller}@cs.sunysb.edu). Funding was provided by NSF grant EAGER 1050477. Abstract—Neighborhood denoising filters are powerful techniques in image processing and can effectively enhance the image quality in CT reconstru...

متن کامل

Color Image Denoising Using Decision Based Vector Median Filter

A new Decision based algorithm for impulse identification in color images is proposed. In vector median filter all the pixels are processed irrespective of whether it is corrupted or uncorrupted. The proposed algorithm overcomes this drawback where Vector Median is calculated only if the processing pixel is corrupted. This in turn reduces the computation time. The proposed algorithm gives bette...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2011