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A fast progressive image transmission scheme using block truncation coding by pattern fitting

JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION 2012年第2期23卷 313-322页

作者： Dhara, Bibhas Chandra Chanda, Bhabatosh Jadavpur Univ Dept Informat Technol Kolkata India Indian Stat Inst Kolkata India

In this paper, we have proposed a novel progressive image transmission scheme. In the present method, the concept of the BTC-PF is used for faster decoding. Here, images are decomposed into a number of blocks based on smoothness criterion. The smooth blocks are encoded by block means and the others are by BTC-PF method. To encode a block by BTC-PF method, the codebook is organized like a full search progressive transmission tree which helps greatly in efficient progressive transmission. The present method provides good image quality at low bit-rate and faster decoding compared to other spatial domain progressive transmission methods. We extend this method for color images also. In color image coding, each color plane is encoded separately and then the encoded information of the planes are transmitted in interleaving manner to obtain color images right from the early stages. (C) 2011 Elsevier Inc. All rights reserved.

关键词： Image compression Image transmission Grayscale progressive image transmission Color image progressive transmission block truncation coding Pattern fitting BTC-PF coding Full-search progressive transmission tree Reversible color transformation

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Joint Compression/Watermarking Scheme Using Majority-Parity Guidance and Halftoning-Based block truncation coding

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IEEE TRANSACTIONS ON IMAGE PROCESSING 2010年第8期19卷 2056-2069页

作者： Guo, Jing-Ming Liu, Yun-Fu Natl Taiwan Univ Sci & Technol Dept Elect Engn Taipei Taiwan

In this paper, a watermarking scheme, called majority-parity-guided error-diffused block truncation coding (MPG-EDBTC), is proposed to achieve high image quality and embedding capacity. EDBTC exploits the error diffusion to effectively reduce blocking effect and false contour which inherently exhibit in traditional BTC. In addition, the coding efficiency is significantly improved by replacing high and low means evaluation with extreme values substitution. The proposed MPG-EDBTC embeds a watermark simultaneously during compression by evaluating the parity value in a predefined parity-check region (PCR). As documented in the experimental results, the proposed scheme can provide good robustness, image quality, and processing efficiency. Finally, the proposed MPG-EDBTC is extended to embed multiple watermarks and achieves excellent image quality, robustness, and capacity. Nowadays, most multimedia is compressed before it is stored. It is more appropriate to embed information such as watermarks during compression. The proposed method has been proved to solve effectively the inherent problems in traditional BTC, and provide excellent performance in watermark embedding.

关键词： block truncation coding digital halftoning digital watermarking error diffusion

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Improved Vector Quantization Based block truncation coding Using Template Matching and Lloyd Quantization

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IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES 2009年第12期E92A卷 3369-3371页

作者： Jung, Seung-Won Yoon, Yeo-Jin Nam, Hyeong-Min Ko, Sung-Jea Korea Univ Dept Elect Engn Seoul 136701 South Korea

block truncation coding (BTC) is an efficient image compression algorithm that generates a constant output bit-rate. For color image compression, vector quantization (VQ) is exploited to improve the coding efficiency. In this letter, we propose ail improved VQ based BTC (VQ-BTC) algorithm using template matching and Lloyd quantization (LQ). The experimental results show that the proposed method improves the PSNR by 0.9 dB in average compared to the conventional VQ-BTC algorithms.

关键词： block truncation coding template matching Laplacian distribution Lloyd quantization

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New bit rate reduction techniques for block truncation coding

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IEEE TRANSACTIONS ON COMMUNICATIONS 1996年第10期44卷 1247-1250页

作者： Rao, YVR Eswaran, C NANYANG TECHNOL UNIV SCH ELECT & ELECT ENGN SINGAPORE 2263 SINGAPORE

Two simple and fast block truncation coding algorithms which require reduced bit rates are presented in this paper. The proposed algorithms are compared with the modified block truncation coding technique (MBTC) with regard to the mean square error (MSE), bit rates and subjective quality of the reconstructed images, It is found that the results obtained with the proposed algorithms at reduced bit rates are comparable to those obtained with the MBTC. Further, it is shown that one of the proposed algorithms yields results which are comparable to those achieved with more complex hybrid algorithms.

关键词： bit rate reduction algorithms Comparable Mean square error block truncation coding

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Color image compression by moment-preserving and block truncation coding techniques

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IEEE TRANSACTIONS ON COMMUNICATIONS 1997年第12期45卷 1513-1516页

作者： Yang, CK Lin, JC Tsai, WH NATL TSING HUA UNIV DEPT COMP & INFORMAT SCIHSINCHU 300TAIWAN

A new color image compression technique based on moment-preserving and block truncation coding is proposed, An input image is divided into nonoverlapping blocks and each block pixel is assigned one of two representative colors, which are computed with analytic formulas derived from preserving certain moments in the block. A bit map is then generated for each block to represent the pixels' colors, Different uniformity conditions in the representative colors are also identified and utilized to save code bits, Good average compression ratios up to about 13 can be achieved, as shown by experimental results.

关键词： bit map block truncation coding color image compression moment-preserving uniform color plane

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Halftoning-based block truncation coding image restoration

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JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION 2016年 35卷 193-197页

作者： Guo, Jing-Ming Prasetyo, Heri Wong, KokSheik Natl Taiwan Univ Sci & Technol Dept Elect Engn Taipei Taiwan Univ Malaya Fac Comp Sci & Informat Technol Kuala Lumpur Malaysia

This paper presents a new image restoration method for improving the quality of halftoning-block truncation coding (BTC) decoded image in a patch-based manner. The halftoning-BTC decoded image suffers from the halftoning impulse noise which can be effectively reduced and suppressed using the Vector Quantization (VQ)-based and sparsity-based approaches. The VQ-based approach employs the visual codebook generated from the clean image, whereas the sparsity-based approach utilizes the double learned dictionaries in the noise reduction. The sparsity-based approach assumes that the halftoningBTC decode image and clean image share the same sparsity coefficient. In the sparse coding stage, it uses the halftoning-BTC dictionary, while in the reconstruction stage, it exploits the clean image dictionary. As suggested by the experimental results, the proposed method outperforms in the halftoning-BTC image reconstructed when compared to that of the filtering approaches. (C) 2016 Elsevier Inc. All rights reserved.

关键词： Halftoning Error diffusion Ordered dithering block truncation coding Image restoration Sparse representation Image compression Vector quantization

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Improved block truncation coding Using Extreme Mean Value Scaling and block-Based High Speed Direct Binary Search

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IEEE SIGNAL PROCESSING LETTERS 2011年第11期18卷 694-697页

作者： Guo, Jing-Ming Su, Chang-Cheng Natl Taiwan Univ Sci & Technol Dept Elect Engn Taipei Taiwan

block truncation coding (BTC) has been considered as an efficient compression technique for decades. However, the annoying blocking effect and false contour caused by low bit rate configuration are key problems. To solve these problems, many former halftoning-based BTCs are proposed. However, these schemes also induce another impulse noise issue while the previous issues still have room for improvement. To cope with this, the iteration-based halftoning is combined with BTC, namely Direct-Binary-Search BTC (DBSBTC) to solve the aforementioned problems. Moreover, the high-speed DBS halftoning method along with the block-based strategy yield even faster processing speed than some of the former halftoning-based BTC schemes. As documented in the experimental results, the proposed DBSBTC is superior to the former halftoning-base BTC schemes in terms of image quality, and which makes the former schemes as potential candidates for surveillance and computer vision applications.

关键词： block truncation coding digital halftoning direct binary search error diffusion image compression dot diffusion ordered dithering

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Bit plane modification for improving MSE-near optimal DPCM-based block truncation coding

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DIGITAL SIGNAL PROCESSING 2013年第4期23卷 1171-1180页

作者： Choi, Kang-Sun Korea Univ Technol & Educ Sch Elect Elect & Commun Engn Cheonan 330708 Chungnam South Korea

A hybrid method of block truncation coding (BTC) and differential pulse code modulation (DPCM) offers better visual quality than the standard BTC for small block sizes due to its inherent multitone representation. Recently, a two-level quantizer design method has been proposed to increase the coding performance of the DPCM-BTC framework. However, the design method is near optimal in the sense that its coding performance depends on the initial bit plane patterns. In this paper, we propose a bit plane modification (BPM) algorithm to achieve further performance improvement. The BPM algorithm, inspired by error diffusion, effectively distributes large quantization error at a certain pixel to its neighboring pixels having small quantization errors by changing partial bit patterns. Experimental results show that the proposed algorithm successfully achieves much higher coding performance than various conventional BTC methods. The average PSNR performance of the proposed method is 2.31 dB, 5.15 dB, and 5.15 dB higher than that of BTC, DPCM-BTC, and a recently developed BTC scheme using error diffusion and bilateral filtering, respectively. (C) 2013 Elsevier Inc. All rights

关键词： Quantizer optimization Differential pulse code modulation block truncation coding Error diffusion

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Improved color image coding schemes based on single bit map block truncation coding

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OPTICAL ENGINEERING 2014年第9期53卷 093104-1-093104-12页

作者： Hu, Yu-Chen Chang, I-Cheng Liu, Kuo-Yu Hung, Che-Lun Providence Univ Dept Comp Sci & Informat Management Taichung 43301 Taiwan Natl Dong Hwa Univ Dept Comp Sci & Informat Engn Hualien Taiwan Providence Univ Dept Comp Sci & Commun Engn Taichung 43301 Taiwan

Two color image coding schemes based on single bit map block truncation coding are proposed in this paper. The first scheme employs the optimal rule for single bit map generation. In addition, the quantization level recomputation process is designed. By using these two techniques, a fixed bit rate image coding scheme is introduced. To further cut down the required bit rates of the first scheme, the similar block prediction technique and the bit map omission technique are employed in the second scheme. According to the experimental results, the first scheme proposed significantly improves the image qualities of the compressed images compared to the traditional single bit map block truncation coding scheme. In addition, good image qualities of the compressed images are achieved by the second scheme while keeping bit rates low. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)

关键词： color image coding block truncation coding single bit map block truncation coding similar block prediction bit map omission

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High capacity reversible data hiding scheme based on residual histogram shifting for block truncation coding

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SIGNAL PROCESSING 2015年 108卷 376-388页

作者： Chang, I-Cheng Hu, Yu-Chen Chen, Wu-Lin Lo, Chun-Chi Natl Dong Hwa Univ Dept Comp Sci & Informat Engn Shoufeng 97401 Hualien Taiwan Providence Univ Dept Comp Sci & Informat Management Taichung 43301 Taiwan Providence Univ Dept Comp Sci & Informat Engn Taichung 43301 Taiwan

A reversible data hiding scheme based on residual histogram shifting for the compressed images of block truncation coding (BTC) is proposed. This scheme employs an iterative approach to embed the secret data into the compressed codes of BTC. In each round, the quantization levels are processed by the block-based prediction technique to generate the residual values. Then, the residual values are used to embed the secret data. Multiple rounds of the data embedding process can be executed to increase the hiding capacity of the proposed scheme. Experimental results reveal that the proposed scheme provides good image qualities of the embedded images. In addition, the hiding capacity of the proposed scheme is greater than that of the comparative scheme. Furthermore, the embedded compressed codes still follow the standard format of BTC after the proposed data embedding procedure is executed. (C) 2014 Elsevier B.V. All rights reserved.

关键词： Reversible data hiding block truncation coding Histogram shifting Predictive coding

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