background: the electrocardiogram artifact is a major contamination in the electromyogram signals when electromyogram signal is recorded from upper trunk muscles and because of that the contaminated electromyogram is not useful. objective: removing electrocardiogram contamination from electromyogram signals. methods: in this paper, the clean electromyogram signal, electrocardiogram artifact and...

in this paper, an optimal algorithm is presented for de-noising of medical images. the presented algorithm is based on improved version of local pixels grouping and principal component analysis. in local pixels grouping algorithm, blocks matching based on l2 norm method is utilized, which leads to matching performance improvement. to evaluate the performance of our proposed algorithm, peak sign...

background : the recognition of road traffic noise as one of the main sources of environmental pollution has led to develop models that enable to predict noise level from fundamental variables. traffic noise prediction models are required as aids for designing roads and highways. in addition, sometimes are used in the assessment of existing or envisaged changes in traffic noise conditions. in t...

introduction mahmoodabad county is located at the coastal region of the country, and it is neighbor of coastal areas where are full of tourism and entertainment applications. this has led to intense development towards suburbs and human domiciles in this county. the 432-unit of mehr housing project in the mahmoodabad, mazandaran province, iran, is located at the 52° 11' to 52° 29' eas...

In the present work, a novel image restoration method from noisy data samples is presented. The restoration was performed by using some heuristic approach utilizing data samples and smoothness criteria in spatial domain. Unlike most existing techniques, this approach does not require prior modelling of either the image or noise statistics. The proposed method works in an interactive mode to fin...

Ultrasound images suffer of multiplicative noise named speckle. Bayesian shrinkage in transform domain is a well-known method based on finding threshold value to suppress the speckle noise. The main problem of applying Bayesian shrinkage is finding the optimum threshold value in appropriate transform domain. In this paper, we compare the performance of adaptive Bayesian thresholding when nonsub...

When trying to overcome the significant performance drops of ASR systems in the presence of noise, one road to follow is the integration of the information present in the lips movement of the speaker. Comparisons showed that integration of audio and video data on the decision level yields best recognition results. This raises the question how to weight the two modalities in different noise cond...

We show that intensity and phase noise are highly correlated in a mode-locked Ti:sapphire laser. This allows electro-optic sampling noise, degraded by the combination of 2184 dBc/Hz laser phase noise and birefringent system components, to be reduced 12 dB to the shot noise floor. Two multiorder waveplates can be combined to achieve shot-limited noise while preserving maximum detection efficienc...