Results 151 to 160 of about 359,463 (189)
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Perceptual Evaluation of Demosaicing Artefacts
2014Most of the digital camera sensors are equipped with the Colour Filter Arrays (CFAs) that split the light into the red, green, and blue colour components. Every photodiode in the sensor is capable to register only one of these components. The demosaicing techniques were developed to fill the missing values, however, they distort a scene data and ...
Tomasz Sergej, Radosław Mantiuk
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Robustness Evaluation of Perceptual Watermarks
2007 International Symposium on Signals, Circuits and Systems, 2007In a watermarking system, robustness evaluation should be made if invisibility criteria are satisfied. For this purpose, we propose to measure the perceptual impact of a watermark on the image using the well known peak signal-to-noise ratio (PSNR) and additionally a spatial masking model that indicates "bad" pixels between the original and watermarked ...
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The perceptual evaluation of voice disorders.
Acta oto-rhino-laryngologica Belgica, 1996The consent about the necessity of perceptual evaluation in the assessment of patients with voice disorders is almost unanimous. This is not the case with regard to the method or scale. This article gives an outline of historical backgrounds and presents a survey of contemporary perceptual rating scales.
De Bodt, Marc +3 more
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Perceptual Evaluation of Dysphonia: Reliability and Relevance
Folia Phoniatrica et Logopaedica, 1993A standardized, perceptually based description of hoarseness is of importance for clinical purposes (e.g. therapy evaluation) as well as in research on voice disorders. The reliability and relevance of perceptual parameters are investigated. The GRBAS scale parameters quite well fit the criteria: low intrajudge and interjudge variance but high ...
P H, Dejonckere +3 more
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Electroglottographic and Perceptual Evaluation of Tracheoesophageal Speech
Journal of Voice, 2009To optimize tracheoesophageal (TO) speech after total laryngectomy, it is vital to have a robust tool of assessment to help investigate deficiencies, document changes, and facilitate therapy. We sought to evaluate and validate electroglottography (EGG) as an important tool in the multidimensional assessment of TO speech. This study is a cross-sectional
Rehan, Kazi +7 more
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Perceptual evaluation of measures of spectral variance
The Journal of the Acoustical Society of America, 2018In many applications, it is desirable to achieve a signal that is as close as possible to ideal white noise. One example is in the design of an artificial reverberator, whereby there is a need for its lossless prototype output from an impulse input to be perceptually white as much as possible.
Natalie, Agus +4 more
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The OSOT Perceptual Evaluation: A Research Perspective
The American Journal of Occupational Therapy, 1988Abstract Although the Ontario Society of Occupational Therapists (OSOT) Perceptual Evaluation has been widely used, it has never been standardized. A study was undertaken to examine the validity of the battery for differentiating neurologically normal persons from those who have been independently diagnosed as neurologically impaired.
M, Boys +3 more
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Perceptual evaluation of vocal behaviour
Logopedics Phoniatrics Vocology, 1998Speech therapists define their voice therapy by perceptual evaluation of vocal behaviour and speaking technique. In the diagnostic phase they identify vocal problems and they spot the imperfections which may be present. In their therapy they plan a course of action to remove them.
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Perceptual evaluation in occupational therapy
International Journal of Rehabilitation Research, 1987E, Mohl, H, Kürten, H H, Janzik
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