نتایج جستجو برای: porphyritic texture

تعداد نتایج: 41615  

2012
E. M. Srinivasan K. Ramar A. Suruliandi

Texture is one of the fundamental image characteristics useful in computer vision tasks such as object recognition and scene analysis. Texture segmentation is one of the image analysis tasks. The prospect of texture segmentation depends on the choice of the texture description method and the segmentation procedure. In this paper, color-texture descriptors are proposed to represent the texture c...

Journal: :Comput. Graph. Forum 2012
Anass Lasram Sylvain Lefebvre Cyrille Damez

Procedural textures usually require spending time testing parameters to realize the diversity of appearances. This paper introduces the idea of a procedural texture preview: A single static image summarizing in a limited pixel space the appearances produced by a given procedure. Unlike grids of thumbnails our previews present a continuous image of appearances, analog to a map. The main challeng...

Journal: :Comput. Graph. Forum 2006
Chih-Chun Chen Jung-Hong Chuang

Level-of-detail modeling is a vital representation for real-time applications. To support texture mapping progressive meshes (PM), we usually allow the whole PM sequence to share a common texture map. Although such a common texture map can be derived by using appropriate mesh parameterizations that consider the minimization of geometry stretch, texture stretch, or even the texture deviation int...

2016
R. L. Sable

It is a unique approach for steganography using a reversible texture synthesis where rather than using existing image the algorithm will create new texture image using source texture and embeds message by texture synthesis process. The new image with similar appearance can be re-created by using texture synthesis process. The size of new image can be user specified. The important concept behind...

Journal: :Vision Research 2001

2015
T. Onoue C. Yasuda K. Morita T. Nakamura

Introduction: Cosmic spherules are subspherical to spherical particles of <1 mm diameter which are produced by melting of interplanetary dust and large objects during atmospheric entry. Although cosmic spherules are known principally from the ice sheets of polar regions and Cenozoic deep-sea sediments [1-3], a few spherules older than Mesozoic were recovered from the sedimentary rocks of pelagi...

Journal: :Lithos 2021

The Nuweibi intrusion was emplaced during the final tectono-magmatic stage of Arabian-Nubian Shield development (ANS). Two cogenetic phases can be recognized in field: early phase is represented by porphyritic albite granite and non-porphyritic granite. Mineralogically, both are essentially composed albite, quartz, K-feldspars with subordinate muscovite. Accessory minerals include fluorite, zir...

Journal: :Pancreas 2020

Journal: :Textures and Microstructures 1984

Journal: :Journal of the Geological Survey of Brazil 2021

The Querari Complex corresponds to the basement rocks from Uaupes Domain and represents one of least studied units in northwest Rio Negro Province, Amazonian Craton. In this paper, we present new field geology, petrographic, geochemical data deformed granites Complex. Based on our results, suggest differentiation into two magmatic facies. Pana-Pana Facies comprise mainly porphyritic syeno monzo...

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