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10 articles for “Quad tree”
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A Proposed Hybrid Spatial Indexing: QX Tree
Abstract: Out of different spatial indexing structures available for accessing spatial data, none of them is suitable for high dimensions. This is because the performance of the spatial indexing structures become poorer with the increase in dimension. Thus there is a need for a better spatial indexing structure for the same. Here we have proposed a hybrid indexing structure by combining the Quad Tree and X Tree. We have considered the …
Published in Recent Trends in Programming languages · Vol. 2, Issue 1, 2015 · pp. 23–27 Read article
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Fractal Geometry and Its Application to Image Compression
Abstract: This paper presents the concept of fractal and its geometry with the explanation of how natural objects require different geometry rather than traditional Euclidean geometry and also discusses mathematics of fractals with the simulation results of generated fractal and applications of the fractal geometry in image compression. Image compression using fractal has a major drawback of large encoding time and several algorithms have been developed to reduce the encoding time …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 2, Issue 2, 2015 · pp. 4–12 Read article
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Homogeneous Video Transcoding Functions for High-Efficiency Video Coding
Abstract: High-efficiency video coding (HEVC) is the successor of H.264/AVC and it gives the higher compression ratio and high quality video than H.264. But, HEVC increases the computational complexity of video coding due to its flexible quad tree partitioning structure. Transcoding algorithms are very much required to associate the HEVC standard into real applications. Homogeneous video transcoding is used for conversion between the same video formats. A higher quality video at …
Published in Current Trends in Signal Processing · Vol. 7, Issue 2, 2017 · pp. 32–36 Read article
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Video Restoration Based on Linear Transformation Method For Real Time Fog –Free Vision In Vehicles
Abstract: The detecting problem of day time fog and calculating visibility distances is the main focus of this paper. An original linear transformation method has been developed for achieving the goal. The solution mentioned here, features the benefit of using a single video camera output. From the camera output the sky region and the fog infected region are identified. The fog infected region is further applied quad-tree subdivision, based on this, …
Published in Journal of Operating Systems Development & Trends · Vol. 5, Issue 1, 2018 · pp. 34–40 Read article
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Species Diversity and Structural Analysis of Komba-Daga Moist Evergreen Forest, Kaffa Zone, Southwest Ethiopia
Abstract: This study was conducted to determine the floristic composition, community types, vegetation structure and regeneration status of selected tree species in the Komba-Daga forest, Kaffa zone, Gimbo district of southwest Ethopia. Systematic sampling method was used to collect vegetation data. A total of 62 plots each with quadretes of 20 m x 20 m for tree species, 5 m x 5 m for shrubs, seedling and sapling and 1 m …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 5, Issue 3, 2015 · pp. 14–23 Read article
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Comparison of Tree Diversity and Biomass in Community-managed and Protected Tropical Dry Evergreen Forest Sites on the Coromandel Coast of India
Abstract: AbstractThis study was carried out in four 1-ha plots distributed two each in community-managed (Sunayakkadu, SN, and Kothattai, KT) and protected (Point Calimere 1 and 2 (PC 1 and PC 2) tropical dry evergreen forest (TDEF) on the Coromandel Coast of India. The present study assesses and compares the stand structure and carbon stocking potential of trees in community-managed (CM) and protected forest (PF) categories. All trees ≥10 cm girth …
Published in Research & Reviews : Journal of Ecology · Vol. 5, Issue 1, 2016 · pp. 1–9 Read article
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Performance Evaluation of Segmentation Algorithms for Apple Fruit Grading
Abstract: For supplying high-quality food products within a short time, automated grading of fruits is getting special attention. Fruit grading technique will grade the fruits using their shapes, color and outer look. This emphasizes the necessity of image segmentation which extracts important features from an image. This paper consists of analysis of different segmentation algorithms for detecting damage part of fruit. Marker-based watershed algorithm uses internal and external markers to locate …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 1, Issue 2, 2014 · pp. 34–40 Read article
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Contra Harmonic Mean Labeling for Some Tree and Corona Related Graphs
Abstract: AbstractA graph G (V,E) is called a Contra Harmonic mean graph with p vertices and q edges, if it is possible to label the vertices xÎV with distinct element f(x) from 0, 1,…,q in such a way that when each edge e = uv is labeled with f(e=uv) = 16f(u)2+f(v)2f(u)+f(v)"> or 16f(u)2+f(v)2f(u)+f(v)"> with distinct edge labels. The mapping f is called Contra Harmonic mean labeling of G. Keywords: Graph, Contra …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 6, Issue 2, 2019 · pp. 24–29 Read article
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Measuring Tree Diversity of Sitaram Peth Village of Bhadravati Taluka of Chandrapur District by Applying Whittaker’s Additive Model
Abstract: Forest plays a major role for sustaining biodiversity and various ecological services. There are 12 tribal districts in the Maharashtra state, which holds about 60 percent of total forest cover of the state. And among these tribal districts, Chandrapur and Gadchiroli together shares about 46 percent of forest cover. For the better conservation and management practices, the tree diversity of these forest should be measured periodically. In the present study, …
Published in Research & Reviews : Journal of Ecology · Vol. 14, Issue 2, 2025 · pp. 49–54 Read article
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Parallel Greedy Approach for Phylogenetic Tree Construction in the Context of Marine Species
Abstract: The rebuilding of phylogenetic trees for marine species shows major computing problems because of the massive genomic data and the huge biodiversity inherent in ocean ecosystems. Traditional phylogenetic methods are accurate but become more expensive when they are processing with thousands of marine taxa parallelly. This article shows a critical analysis of parallel greedy algorithms as an adaptable solution for large-scale marine phylogenetics. It examines the main principles of greedy …
Published in International Journal of Algorithms Design and Analysis Review · Vol. 4, Issue 1, 2026 · pp. 33–45 Read article