This paper studies adaptive thinning strategies for approximating a large set of scattered data by piecewise linear functions over triangulated subsets. Our strategies depend on both the locations of the data points in the plane, and the values of the sampled function at these points — adaptive thinning. All our thinning strategies remove data points one by one, so as to minimize an estimate of...

Forest management activities, such as tree thinning, alter forest ecology, including key components of forest ecosystems, including fungal communities. In the present study, we investigate the effects of forest thinning intensity on the populations and structures of fungal soil communities in the Cryptomeria japonica forests of central Taiwan as well as the dynamics of soil fungi communities in...

Assessment of tracheal stenoses, infra-renal aortic aneurysms, and colorectal polyps [7] Quantitative analysis of tubular tree structures [8] 3D Thinning Algorithms [9] Thinning algorithms based on sufficient conditions for topology preservation [10] Short description: The thinning is an iterative layer by layer erosion until only the "skeletons" of the objects are left. We proposed various 3D ...

Recent observations have shown that the periphery of the Greenland ice sheet (GrIS) is thinning rapidly and that this thinning is greatest around marine-terminating outlet glaciers. Several theories have been proposed which provide a link between climate and ice thinning. We present surface elevation change (dh/dt) data from NASA’s Program for Arctic Regional Climate Assessment (PARCA) laser al...

Keywords: Thinning algorithm Robustness against noise Scale space filtering Sketch image preprocessing a b s t r a c t We apply scale space filtering to thinning of binary sketch images by introducing a framework for making thinning algorithms robust against noise. Our framework derives multiple representations of an input image within multiple scales of filtering. Then, the filtering scale tha...

Pao-Shen Huang, Hui-Chen Lin, I-Min Tso, and Chung-Ping Lin (2011) Effects of thinning on spider diversity in an East Asian subtropical plantation forest. Zoological Studies 50(6): 705-717. Studies examining the effects of forest management on biodiversity in Asia are scarce and conducted mostly in temperate areas. In this study, the effects of the management on the biodiversity of a subtropica...

Topology preservation is the key concept in parallel thinning algorithms on any sampling schemes. This paper establishes some sufficient conditions for parallel thinning algorithms working on hexagonal grids (or triangular lattices) to preserve topology. By these results, various thinning (and shrinking to a residue) algorithms can be verified. To illustrate the usefulness of our sufficient con...

This paper addresses an order-independent parallel thinning algorithm. This algorithm is a two-pass, iterative and parallel processing. In pass-1 the entire image is thinned uniformly to two-pixel thick. In pass-2 the two-pixel thick image is further thinned to one pixel thick image without leaving any two pixels in the resultant image. The thinning process is based on weight-values. The weight...

BACKGROUND AND AIMS Competition drives self-thinning (density-dependent mortality) in crowded plant populations. Facilitative interactions have been shown to affect many processes in plant populations and communities, but their effects on self-thinning trajectories have not been investigated. METHODS Using an individual-based 'zone-of-influence' model, we studied the potential effects of the ...

Digital skeleton of character images, generated by thinning method, has a wide range of applications for shape analysis and classification. But thinning of character images is a big challenge. Removal of spurious strokes or deformities in thinning is a difficult problem. In this paper, we propose a contour-based thinning method used for performing skeletonization of printed noisy isolated chara...