نتایج جستجو برای: pixel value differencing

تعداد نتایج: 775448  

2012
Rukundo Olivier Cao Hanqiang

This paper presents the nearest neighbor value (NNV) algorithm for high resolution (H.R.) image interpolation. The difference between the proposed algorithm and conventional nearest neighbor algorithm is that the concept applied, to estimate the missing pixel value, is guided by the nearest value rather than the distance. In other words, the proposed concept selects one pixel, among four direct...

Journal: :CoRR 2012
Olivier Rukundo Hanqiang Cao

This paper presents the nearest neighbor value (NNV) algorithm for high resolution (H.R.) image interpolation. The difference between the proposed algorithm and conventional nearest neighbor algorithm is that the concept applied, to estimate the missing pixel value, is guided by the nearest value rather than the distance. In other words, the proposed concept selects one pixel, among four direct...

2002
David G. Korn Kiem-Phong Vo

Compression and differencing techniques can greatly improve storage and transmission of files and file versions. Since files are often transported across machines with distinct architectures and performance characteristics, compressed data should be encoded in a form that is portable and efficient to decode. This paper describes the Vcdiff encoding format for differencing and compression data a...

2004
Zhiqiang Hou Chongzhao Han

1 The work is supported by National Key Fundamental Research (973) Program in China, the project number is: 2001CB309403. AbstractA background reconstruction algorithm based on pixel intensity classification is presented in this paper. Assumption that background pixel intensity appears in image sequence with the maximum probability is adopted. The pixel intensity values are classified based on ...

2005
Pedro V. Sander John R. Isidoro Jason L. Mitchell

Prior to execution of the pixel shader, the GPU performs a check of the interpolated z value against the z value in the z buffer. This occurs for any pixels which passed the hierarchical z test and which are actually going to use the primitive’s interpolated z (rather than compute z in the pixel shader itself). This additional check provides not only an added efficiency win when using long, cos...

2011
Che-Wei Lee Wen-Hsiang Tsai

A new grayscale image authentication method with a pixel-level self-recovering capability for tampered region repairing is proposed. By dividing the grayscale range into bins, a 3-bit bin code is generated as the authentication signal for each pixel in the input cover image. The authentication signals then are embedded randomly into the image pixels for the double purposes of tampering localiza...

2012
Indu Ramachandran Kim Clark

Cost of Doing Business Abroad (CDBA) is an important construct in International Business. The variety of causes leading to the CDBA has been the subject of and many scholars’ examinations. Extending CDBA to an institutional level, we develop a new perspective on the CDBA by incorporating institutional misalignment between the home and the host country as a cause of CDBA. We propose that institu...

2012
Jung-Ah Choi Yo-Sung Ho

High efficiency video coding (HEVC) [1] is a new video coding standard developed by Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T Video Coding Experts Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG). Currently, most of coding techniques are established and HEVC version 1 will be released in January 2013 [2]. We ex‐ pect that HEVC is widely used in various applications ...

2012
Motoi Iwata Takao Ikemoto Akira Shiozaki Akio Ogihara

In this chapter, we propose a pixel adjustment procedure for digital watermarking methods using uniform color space. Many digital watermarking methods use uniform color space due to the convenience of controlling image quality (Yoshiura & Echizen, 2006). However, there is the problem that watermarked RGB integer pixel values in such methods are not quite corresponding to the watermarked real-nu...

Journal: :Image Vision Comput. 2012
Pojala Chiranjeevi Somnath Sengupta

a r t i c l e i n f o Keywords: Background subtraction Rough set 3D histon 3D fuzzy histon 3D HRI 3D FHRI Detection of moving objects in the presence of challenging background situations like swaying vegetation, rippling water, camera jitter etc., is known to be a difficult task. Background subtraction is considered to be better than the other approaches in terms of robustness. Its success prim...

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