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检索条件"主题词=transform coding"
10295 条 记 录,以下是4641-4650 订阅
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Subject Caption Detection in News Video with Complex Picture
Subject Caption Detection in News Video with Complex Picture
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Computer Science and Information Engineering, CSIE, WRI World Congress on FLAGGED
作者: Chien-Cheng Lee Yu-Chun Chiang Cheng-Yuan Shih Department of Communications Engineering Yuan-Ze University Taoyuan Taiwan Department of Mechanical Engineering Yuan-Ze University Taoyuan Taiwan
We propose a method to detect story related subject captions in news video. This paper addresses two issues of caption detection problem. One is the time consuming in the feature computation, the other is the clutter ... 详细信息
来源: 评论
JPEG Steganography: A Performance Evaluation of Quantization Tables
JPEG Steganography: A Performance Evaluation of Quantization...
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International Conference on Advanced Information Networking and Applications (AINA)
作者: Adel Almohammad Gheorghita Ghinea Robert M. Hierons Brunei University UK
The two most important aspects of any image based steganographic system are the imperceptibility and the capacity of the stego image. This paper evaluates the performance and efficiency of using optimized quantization... 详细信息
来源: 评论
A cost-error optimized architecture for 9/7 lifting based Discrete Wavelet transform with balanced pipeline stages
A cost-error optimized architecture for 9/7 lifting based Di...
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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
作者: Alireza Aminlou Fatemeh Refan M.R. Hashemi Omid Fatemi Saeed Safari Multimedia Processing Laboratory School of Electrical and Computer Engineering University of Tehran Tehran Iran
Discrete wavelet transform (DWT) is increasingly recognized in image/video compression standards, as indicated by its use in JPEG2000. The lifting scheme algorithm is an alternative DWT implementation that has a lower... 详细信息
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Image encryption using Discrete Parametric Cosine transform
Image encryption using Discrete Parametric Cosine Transform
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Asilomar Conference on Signals, Systems & Computers
作者: Yicong Zhou Karen Panetta Sos Agaian Department of Electrical and Computer Engineering Tufts University Medford MA USA Department of Electrical and Computer Engineering University of Technology San Antonio TX USA
This paper introduces a new effective image encryption algorithm using the Discrete Parametric Cosine transform (DPCT). The new algorithm transforms images into the frequency domain using the DPCT with a set of parame... 详细信息
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Robust Image Watermarking Scheme Based on 3D-DCT
Robust Image Watermarking Scheme Based on 3D-DCT
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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)
作者: Yonggang Fu College of Computer Engineering Jimei University Xiamen China
A robust image watermarking scheme based on 3-dimensional discrete cosine transform (3D DCT) is proposed for color image copyright protection. Firstly, the color image is divided into 3-D blocks, and then they are tra... 详细信息
来源: 评论
Motion Vector Based Moving Object Detection and Tracking in the MPEG Compressed Domain
Motion Vector Based Moving Object Detection and Tracking in ...
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International Workshop on Content-Based Multimedia Indexing, CBMI
作者: Takanori Yokoyama Toshiki Iwasaki Toshinori Watanabe Graduate School of Information Systems University of Electro-Communications Chofu Tokyo Japan
As MPEG standards prevail, the opportunities to handle MPEG compressed videos increase, and the video indexing and management that can directly process the compressed videos become important. MPEG video coding standar... 详细信息
来源: 评论
A self-embedded watermarking scheme based on relationship function of corresponding inter-blocks DCT coefficient
A self-embedded watermarking scheme based on relationship fu...
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International Conference on Computer Supported Cooperative Work in Design
作者: Guobo Li Songwen Pei Gang Chen Wenjun Cao Baifeng Wu School of Computer Science Fudan University Shanghai China
In the realm of computer supported cooperative work in design (CSCWD), how to ensure the authenticity and integrity of an image plays important roles. This paper presents a novel semi-fragile image watermarking scheme... 详细信息
来源: 评论
Low complexity algorithm for Spatially Varying transforms
Low complexity algorithm for Spatially Varying Transforms
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Picture coding Symposium, PCS
作者: Cixun Zhang Kemal Ugur Jani Lainema Antti Hallapuro Moncef Gabbouj Tampere University of Technology Tampere Finland Nokia Research Center Tampere Finland
In our previous work, we introduced spatially varying transforms (SVT) for video coding, where the location of the transform block within the macroblock is not fixed but varying. SVT has lower decoding complexity comp... 详细信息
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Analysing the performance of the algorithms used to localize the iris region in eye images submitted to severely compressed images
Analysing the performance of the algorithms used to localize...
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IEEE International Symposium on Intelligent Signal Processing
作者: Milena B. P. Carneiro Antonio C. P. Veiga Sandreane P. Silva Edna L. Flores Gilberto A. Carrijo Department of Electrical Engineering Federal University of Uberlândia UFU Uberlandia Minas Gerais Brazil
This work aims to evaluate how does the performance of the iris localization algorithms is influenced by severe compression of eye images used in an automatic iris recognition system. The correct localization of the i... 详细信息
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A Data-Mining Based Skin Detection Method in JPEG Compressed Domain
A Data-Mining Based Skin Detection Method in JPEG Compressed...
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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)
作者: Shiwei Zhao Li Zhuo Zhu Xiao Lansun Shen Signal and Information Processing Laboratory Beijing University of Technology Beijing China
A novel skin detection method in JPEG compressed domain has been proposed in this paper. Color and texture features of the image blocks are extracted from the entropy decoded DCT coefficients firstly. Then, data minin... 详细信息
来源: 评论