Histogram equalization (HE) is one of the common methods used for image enhancement. Histogram equalization has proved to be a simple and effective image contrast enhancement technique. The major difference among the methods in this family is the criteria used to divide the input histogram. For preserving the input brightness of the image, there is a segment to avoid the generation of non-exist...

PURPOSE To investigate the factors associated with hepatobiliary phase (HBP) enhancement at gadoxetic acid-enhanced magnetic resonance imaging (MRI) and to determine whether HBP images could be used to predict prognosis in patients with colorectal cancer liver metastasis (CRLM). RESULTS Of the 96 total nodules, 65 and 31 nodules were in the mixed and clearly hypointense groups, respectively. ...

In speech enhancement, a decision between speech dominant and noise one is important to reduce noise for increasing intelligibility. This paper presents a speech/noise-dominant decision regardless of SNR. In the proposed decision, the influence of noise is reduced by subtracting the noise component. Therefore, the proposed method decides between the speech dominant and noise one accurately. Fro...

1932 All Rights Reserved © 2016 IJARECE  Abstract— In speech communication system, background noise degrades the information or speech signal. For minimizing the effect of background noise different speech enhancement techniques are used. Some speech enhancement techniques are Spectral Subtraction, Wiener Filtering, Two Step Decision Directed Approach, Perceptual Decision Directed Approach. Th...

This paper addresses the study of the speech intelligibility enhancement. The speech model, noise sources, perceptual aspects of speech, and performance evaluation are reviewed. The intelligibility enhancement system based on spectral subtraction technique is investigated. Spectral density estimation device based on the algorithm of smoothed periodograms is analysed. Determination of the silenc...