Real-time removal of random value impulse noise in medical images
| Autor: | Kayvan Najarian, Shadrokh Samavi, Mohsen Hajabdollahi, Kevin R. Ward, Zohreh HosseinKhani, Nader Karimi, S.M.R. Soroushmehr |
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| Rok vydání: | 2016 |
| Předmět: |
Noise measurement
Pixel Computer science business.industry 020206 networking & telecommunications 02 engineering and technology Impulse noise Noise Transmission (telecommunications) Dark-frame subtraction 0202 electrical engineering electronic engineering information engineering Image noise 020201 artificial intelligence & image processing Computer vision Artificial intelligence business Image restoration |
| Zdroj: | ICPR |
| Popis: | With the increasing use of telemedicine there is a great demand in real-time processing and transmission of medical images. Noise is one of the important factors that degrade the quality of medical images. Impulse noise is a common noise that could be caused by malfunctioning of sensors or by data transmission errors. It is one the most common noises that have extensively been studied in recent years. For real-time noise removal hardware techniques are more suited, since software methods are complex and slow. Usually hardware techniques have low complexity and low accuracy. In this paper a low complexity, high accuracy, de-noising method is proposed. It first categorizes image pixels into a number of groups. Then noisy pixels are restored in different ways in each category. Local analysis of image blocks allows us to restore a noisy pixel by using its neighboring non-noisy pixels. All steps are designed to have low hardware complexity. Simulation results show that in the case of MR images, the proposed method removes impulse noise with acceptable accuracy. |
| Databáze: | OpenAIRE |
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