نتایج جستجو برای: timeworn texture

تعداد نتایج: 41453  

Journal: :Pattern recognition letters 2013
Xiaodong Yang Yingli Tian

In this paper, we propose a texture representation framework to map local texture patches into a low-dimensional texture subspace. In natural texture images, textons are entangled with multiple factors, such as rotation, scaling, viewpoint variation, illumination change, and non-rigid surface deformation. Mapping local texture patches into a low-dimensional subspace can alleviate or eliminate t...

Journal: :Pattern Recognition 1995
Boaz J. Super Alan C. Bovik

-This paper presents a computational model and a practical algorithm for determining the three-dimensional orientation of a planar surface from visual texture information. The model consists of three parts: (1) a local spatial frequency based texture representation; (2) a model describing the projection of surface texture to image texture; and (3) a solution of the texture projection model for ...

2005
Patrick Ndjiki-Nya Oleg Novychny Thomas Wiegand

A video content analysis tool for video coding is presented. The underlying assumption of our approach is that the textures in a video scene can be labeled subjectively relevant or irrelevant. Relevant textures are defined as containing subjectively meaningful details, while irrelevant textures contain less important subjective details. We apply this idea to video coding using a texture analyze...

2013
Premanand P Ghadekar Nilkanth B Chopade

In image processing, a static texture is defined as an image showing spatial stationarity, while A dynamic texture is a sequence of images characterized by temporal as well as spatial stationary nature. Dynamic Texture synthesis is the process of producing artificial Dynamic textures starting from a given sample texture. Videos representing flames, water, smoke, etc. are often defined as dynami...

2003
Patrick Ndjiki-Nya Bela Makai Gabi Blattermann Aljoscha Smolic Heiko Schwarz Thomas Wiegand

We assume that the textures in a video scene can be classified into two categories: textures with unimportant subjective details and the remainder. We utilize this assumption for improved video coding using a texture analyzer and a texture synthesizer. The texture analyzer identifies the texture regions with unimportant subjective details and generates coarse masks as well as side information f...

2006
Yongbing Zhang Xiangyang Ji Debin Zhao Wen Gao

A new approach to analyze and synthesize texture regions in video coding is presented, where texture blocks in video sequence are synthesized using graph cut technique. It first identifies the texture regions by video segmentation technique, and then calculates their motion vectors by motion vector (MV) scaling technique like temporal direct mode. After the correction of these MVs, texture regi...

2011
Andreas Burner Rene Donner Marius Mayerhoefer Markus Holzer Franz Kainberger Georg Langs

Providing efficient access to the huge amounts of existing medical imaging data is a highly relevant but challenging problem. In this paper, we present an effective method for content-based image retrieval (CBIR) of anomalies in medical imaging data, based on similarity of local 3D texture. During learning, a texture vocabulary is obtained from training data in an unsupervised fashion by extrac...

1982
K. I

As an object approaches the eye, its retinal image size grows larger and its surface texture appears to grow coarser. We compare these two visual correlates of motion in their effectiveness as stimuli for motion in depth. In some experiments texture and object size both expanded or both contracted: in other experiments the two stimuli were pitted against each other. When texture and size change...

2002
H. A. Cohen J. You

A methodology for texture analysis termed TEXSCALE is described that involves a hierarchical approach to the problem of texture recognition and image segmentation by texture. TEXSCALE involves the determination of texture class 'tuned' masks that determine whether a texture belongs in a particular texture class, coupled with the use of 'tuned' masks that differentiate between members of the sam...

2005
Kun Zhou Xi Wang Yiying Tong Mathieu Desbrun Baining Guo Heung-Yeung Shum

We propose a technique, called TextureMontage, to seamlessly map a patchwork of texture images onto an arbitrary 3D model. A texture atlas can be created through the specification of a set of correspondences between the model and any number of texture images. First, our technique automatically partitions the mesh and the images, driven solely by the choice of feature correspondences. Most chart...

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