Topic
Impulse noise
About: Impulse noise is a research topic. Over the lifetime, 4816 publications have been published within this topic receiving 63970 citations.
Papers published on a yearly basis
Papers
More filters
01 Dec 2010
TL;DR: A low-complexity noise removal based on a conditional technique and its FPGA implementation for window sizes of (3×3) and (5×5) is presented.
Abstract: Impulse noise removal is a very important preprocessing operation in many computer vision applications. This paper presents a low-complexity noise removal based on a conditional technique and outlines its FPGA implementation for window sizes of (3×3) and (5×5). As the experiments show, the proposed technique performs significantly better than standard median filter and achieves superior image quality. The FPGA implementations are very compact, fast and consume low-power.
22 citations
TL;DR: The superiority of the proposed model to others in removing high density noise is established both quantitatively and qualitatively with various benchmarks and real-time test data sets.
22 citations
07 Jun 2004
TL;DR: Extensive simulation results show that the proposed filter achieves a superior performance to the other filters mentioned in this paper in the cases of being effective in noise suppression and detail preservation, especially when the noise density is very high.
Abstract: A new impulsive noise elimination filter, entitled Resilient Neural Network based impulsive noise removing filter (RF), which shows a high performance at the restoration of images corrupted by impulsive noise, is proposed in this paper. The RF uses Chi-square goodness-of-fit test in order to find corrupted pixels more accurately. The corrupted pixels are replaced by new values which were estimated by using the proposed RF. Extensive simulation results show that the proposed filter achieves a superior performance to the other filters mentioned in this paper in the cases of being effective in noise suppression and detail preservation, especially when the noise density is very high.
22 citations
TL;DR: This work proposes a technique to remove sparse impulse noise from hyperspectral images by empirically learns the spatial and spectral sparsifying dictionaries while denoising the images based on the recently introduced Blind Compressed Sensing framework.
22 citations
TL;DR: System design issues for the implementation of 51.84 Mb/s ATM-LAN and broadband access transceivers and a pipelined fractionally spaced linear equalizer (FSLE) architecture are presented and a hardware-efficient pipelining architecture for the adaptive FSLE equalizer is presented.
Abstract: We present: (1) system design issues for the implementation of 51.84 Mb/s ATM-LAN and broadband access transceivers and (2) a pipelined fractionally spaced linear equalizer (FSLE) architecture. Signal-to-noise ratio (SNR) and bit-error rate (BER) along with VLSI constraints are addressed. For the LAN environment, major channel impairments include near-end crosstalk (NEXT), intersymbol interference (ISI), and impulse noise. The broadband access environment suffers from far end crosstalk (FEXT), ISI, radio-frequency interference (RFI), impulse noise, and splitter losses. Measured characteristics of the channel are compared with analytical models. These are employed in the design of the transmitter/receiver algorithms. The carrierless amplitude/phase (CAP) transmission scheme is presented as a practical bandwidth-efficient scheme for these applications. An adaptive FSLE employed in a CAP receiver eliminates ISI, suppresses NEXT (for ATM-LAN) and FEXT (for broadband access), and provides robustness to timing jitter. However, fractional tap spacing in combination with the high-data rates results in a high sample rate adaptive computation. Fortunately, throughput enhancing methods such as pipelining can be used for high-speed/low-power operation. A hardware-efficient pipelined architecture for the adaptive FSLE equalizer is presented. This has been developed using relaxed look-ahead, which maintains the algorithm functionality rather than the input-output mapping. Simulation and experimental results for high-speed digital CAP transceivers for LAN and broadband access are also presented.
22 citations