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Image quality assessment method is a hot issue that aims to give an objective assessment value that in line with the human's subject perception or certain demand of applications. This paper summarized and compared several quality assessment methods that have been widely used in astronomical optical images, including Strehl Ratio, FWHM, Spectral ratio, RMS, Fisher information, entropy function and...
In order to get good fusion result for nomadic service under pervasive computing paradigm, based on our researches, we present a new approach of entropy-based wavelet filtering to do an adaptive soft process for nomadic decision, which is the good balance when considering both application quality and the PSNR criterion. Using a hard threshold-ing, a soft thresholding , MEF method, and MEF method with...
The co-occurring patterns in a group carrying the traits of common origin are statistically dependent via an underlying style context. Exploiting style consistency in groups of patterns from multiple sources can increase OCR accuracy. The accuracy gains obtained by a style consistent classifier depend on the amount of style in isogenous (same-source) fields. We present mathematical models to quantify...
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