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检索条件"主题词=fractal image coding"
99 条 记 录,以下是1-10 订阅
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Modified decoded image quality prediction method for fractal image coding
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COMPUTERS & ELECTRICAL ENGINEERING 2024年 第PartB期118卷
作者: Wang, Qiang Du, Jingjing Dalian Maritime Univ Coll Informat Sci & Technol Linghai Rd 1 Dalian 116026 Peoples R China Hengshui Univ Coll Elect & Informat Engn Hengshui 053000 Peoples R China
An effective method was proposed to improve the performance of fractal decoded image quality prediction. Firstly, we found that the dynamic range of the linear correlation coefficients (LCCs) between range blocks and ... 详细信息
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Hybrid fractal image coding
Hybrid Fractal Image Coding
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7th International Conference on Communications, Signal Processing, and Systems (CSPS)
作者: Jin, Guohua Wang, Qiang Bi, Sheng Dalian Maritime Univ Coll Informat Sci & Technol Dalian Peoples R China
In order to improve the performance of fractal coding methods, a new method is proposed in this paper. Firstly, we find that the range blocks with large variances play a more important role in causing the degradation ... 详细信息
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A PRIMAL-DUAL ALGORITHM FOR ROBUST fractal image coding
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fractalS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY 2019年 第7期27卷
作者: Xu, Chen Ye, Yuting Hu, Zhenwei Zou, Yuru Shen, Lixin Liu, Xiaoxia Liu, Jian Shenzhen Univ Coll Math & Stat Shenzhen Key Lab Adv Machine Learning & Applicat Shenzhen 518060 Guangdong Peoples R China Syracuse Univ Dept Math Syracuse NY 13244 USA Shenzhen Univ Guangdong Key Lab Intelligent Informat Proc Shenzhen 518060 Guangdong Peoples R China
The essence of Huber fractal image coding (HFIC) is to predict the fractal code of a noiseless image as accurately as possible from its corrupted observation with outliers by adopting Huber M-estimation technique. How... 详细信息
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Perceptual image hashing based on structural fractal features of image coding and ring partition
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MULTIMEDIA TOOLS AND APPLICATIONS 2020年 第27-28期79卷 19025-19044页
作者: Khelaifi, Fares He, HongJie Southwest Jioatong Univ Sch Informat Sci & Technol Chengdu 610031 Peoples R China
Perceptual image hashing finds increasing attention in several multimedia security applications. However, reaching the trade-off balance between the two most important properties of image hashing- robustness and discr... 详细信息
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An adaptive fractal-based image coding with hierarchical classification strategy and its modifications
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INNOVATIONS IN SYSTEMS AND SOFTWARE ENGINEERING 2019年 第1期15卷 35-42页
作者: Nandi, Utpal Vidyasagar Univ Dept Comp Sci Midnapore 721102 W Bengal India
fractal-based image coding is one of the efficient methods for grayscale image since the reconstructed images are resolution independent and also has low reconstruction time. This paper discusses the efficiency of hie... 详细信息
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Improved method for predicting the peak signal-to-noise ratio quality of decoded images in fractal image coding
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JOURNAL OF ELECTRONIC IMAGING 2017年 第1期26卷 013024-013024页
作者: Wang, Qiang Bi, Sheng Dalian Maritime Univ Coll Informat Sci & Technol Dalian Peoples R China
To predict the peak signal-to-noise ratio (PSNR) quality of decoded images in fractal image coding more efficiently and accurately, an improved method is proposed. After some derivations and analyses, we find that the... 详细信息
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A Novel Method to Improve the Quality of Decoded images in fractal image coding  8
A Novel Method to Improve the Quality of Decoded Images in F...
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Proceedings 2015 8 International Congress on image and Signal Processing (CISP)
作者: Zou, Kun Wang, Qiang Zhai, Zhaoxia Dalian Maritime Univ Coll Informat Sci & Technol Dalian 116026 Peoples R China
In order to improve the quality of decoded images in fractal image coding, a novel method by making use of a modified image is proposed in this paper. Since the degradation of decoded images in fractal coding mainly c... 详细信息
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An Accelerated Method to Predict the Quality of Decoded images in fractal image coding  8
An Accelerated Method to Predict the Quality of Decoded Imag...
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Proceedings 2015 8 International Congress on image and Signal Processing (CISP)
作者: Wang, Qiang Bi, Sheng Jin, Guohua Dalian Maritime Univ Coll Informat Sci & Technol Dalian 116026 Peoples R China
With many observations, we find that there exists a logarithmic relationship between the average collage error (ACER) and the quality of decoded images. By making use of the ACER in the encoding process, the quality o... 详细信息
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Discrete wavelet transform-based simple range classification strategies for fractal image coding
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NONLINEAR DYNAMICS 2014年 第3期75卷 439-448页
作者: Wang, Xing-Yuan Zhang, Dou-Dou Dalian Univ Technol Fac Elect Informat & Elect Engn Dalian 116024 Peoples R China
An efficient fractal method based on discrete wavelet transfer is proposed in this paper. Before encoding, images with one-level wavelet transform are first partitioned into four subbands, which classify the range blo... 详细信息
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Digital watermarking based on fractal image coding using DWT and HVS
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INTERNATIONAL JOURNAL OF KNOWLEDGE-BASED AND INTELLIGENT ENGINEERING SYSTEMS 2014年 第2期18卷 81-89页
作者: Ohga, Satoshi Hamabe, Ryuji Fukuoka Jyoto High Sch Fukuoka Japan Fukuoka Inst Technol Dept Comp Sci & Engn Higashi Ku 3-30-1 Wajirohigashi Fukuoka 8110295 Japan
In this paper, we propose a new digital watermarking method based on fractal image coding using DWT and HVS. The method decomposes an original image into subbands LL1 and LL2 using DWT. In fractal image coding, LL1 an... 详细信息
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