A perceptual shape descriptor

A methodology to incorporate the three-dimensional molecular shape descriptor (3 D-MSD) into a quantitative structure-activity relationship is discussed in detail. The 3 D-MSD is calculated and correlated with Kiapp values for a set of 2,4-diamino-5-benzylpyrimidines which inhibit E. coli DHFR. The correlation (n = 22, r = 0.95, s = 0.214, F = 55.10) indicates that the polarization interaction dominates the enzyme-inhibitor interactional pattern.

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Robust Affine Invariant Region-Based Shape Descriptors: The ICA Zernike Moment Shape Descriptor and the Whitening Zernike Moment Shape Descriptor

IEEE Signal Processing Letters ◽

10.1109/lsp.2009.2026119 ◽

2009 ◽

Vol 16 (10) ◽

pp. 877-880 ◽

Cited By ~ 22

Author(s):

Ye Mei ◽

D. Androutsos

Keyword(s):

Shape Descriptor ◽

Zernike Moment ◽

Shape Descriptors ◽

Affine Invariant ◽

Invariant Region

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Optimized hybrid shape descriptor-based 3D ojbect retrieval

2013 IEEE International Conference on Image Processing ◽

10.1109/icip.2013.6738826 ◽

2013 ◽

Author(s):

Sang Min Yoon ◽

Gang-Joon Yoon

Keyword(s):

Shape Descriptor ◽

Hybrid Shape Descriptor

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Periodic wavelet descriptor of plant leaf and its application in botany

International Journal of Wavelets Multiresolution and Information Processing ◽

10.1142/s0219691315500435 ◽

2015 ◽

Vol 13 (06) ◽

pp. 1550043 ◽

Cited By ~ 3

Author(s):

Qing-Mao Zeng ◽

Tong-Lin Zhu ◽

Xue-Ying Zhuang ◽

Ming-Xuan Zheng

Keyword(s):

Species Identification ◽

Plant Species ◽

Shape Descriptor ◽

Plant Leaf ◽

Practical Applications ◽

Wide Range ◽

Periodic Wavelet ◽

Plant Species Identification ◽

Botanical Research ◽

Wavelet Descriptor

Leaf is one of the most important organs of plant. Leaf contour or outline, usually a closed curve, is a fundamental morphological feature of leaf in botanical research. In this paper, a novel shape descriptor based on periodic wavelet series and leaf contour is presented, which we name as Periodic Wavelet Descriptor (PWD). The PWD of a leaf actually expresses the leaf contour in a vector form. Consequently, the PWD of a leaf has a wide range in practical applications, such as leaf modeling, plant species identification and classification, etc. In this work, the plant species identification and the leaf contour reconstruction, as two practical applications, are discussed to elaborate how to employ the PWD of a plant leaf in botanical research.

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THE NORMALIZED WAVELET DESCRIPTOR FOR SHAPE RETRIEVAL

International Journal of Wavelets Multiresolution and Information Processing ◽

10.1142/s0219691308002197 ◽

2008 ◽

Vol 06 (01) ◽

pp. 25-36 ◽

Cited By ~ 5

Author(s):

KIMCHENG KITH ◽

BAREND J. VAN WYK ◽

MICHAËL A. VAN WYK

Keyword(s):

Image Analysis ◽

Image Retrieval ◽

Shape Descriptor ◽

Scale Space ◽

Experimental Results ◽

Shape Retrieval ◽

Fourier Descriptor ◽

Curvature Scale Space ◽

Wavelet Descriptor

In many image analysis applications, such as image retrieval, the shape of an object is of primary importance. In this paper, a new shape descriptor, namely the Normalized Wavelet Descriptor (NWD), which is a generalization and extension of the Wavelet Descriptor (WD), is introduced. The NWD is compared to the Fourier Descriptor (FD), which in image retrieval experiments conducted by Zhang and Lu, outperformed even the Curvature Scale Space Descriptor (CSSD). Image retrieval experiments have been conducted using a dataset containing 2D-contours of 1400 objects extracted from the standard MPEG7 database. For the chosen dataset, our experimental results show that the NWD outperforms the FD.

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