Aspects of between-individual trophic niche width can be explored through the isotopic niche concept. In many cases isotopic variability can be influenced by the scale of sampling and biological characteristics including body size or sex. Sample size-corrected (SEAc) and Bayesian (SEAb) standard ellipse areas and generalised least squares (GLS) models were used to explore the spatial variabilit...

Volume 31, No. 3, Page 307-313, 2016Page 310, Legend for Fig. 4 IncorrectFig. 4. Growth degree of Fusarium oxysporum f. sp. spinaciae for organic fertilizers at each dilution based on an estimation of the ellipse area (A) and extension length (B) of the colony. Cont, compound inorganic fertilizer; SBM, steamed bone meal; CDC, cow dung compost; MI, microbial inoculant. Values show mean of median...

Automatic speechreading systems through their use of visual information to support the acoustic signal have been shown to yield better recognition performance than purely acoustic systems, especially when background noise is present. In this paper an answer is sought to the most important questions of speechreading: Which features can represent visual information well? How can they be extracted...

This paper presents an eye detection technique basedon color and shape features. The approach consists of three steps: a rough eye localization using projection technique, a white color thresholding to extract white sclera, and an ellipse fitting to fit the ellipse shape of eye. The proposed white color thresholding utilizes the normalized RGB chromaticty diagram, where white color objects are ...

In this work we present a technique for tracking contours from echocardiogram video. Our aim is to calculate area of a heart chamber, say, left ventricle(LV), over time from the video. To do so, we have tried to estimate LV boundary by an ellipse for each frame. The system requires a user drawn ellipse describing the LV in the rst frame. For the next frames, this ellipse is adjusted according t...

-In this paper we use the parameteric polar representation to extend the application of edge directional information from circle to ellipse extraction. As a result we obtain a mapping which decomposes the parameter space required for ellipse extraction into two independent sub-spaces and one final histogram accumulator. The mapping includes the tangent of the angle of the first and second direc...