Results 61 to 70 of about 244 (177)
Compressive Data Hiding: An Unconventional Approach for Improved Color Image Coding
EURASIP Journal on Advances in Signal Processing, 2002 Traditionally, data hiding and compression have had contradictory goals. The former problem adds perceptually irrelevant information in order to embed data, while the latter removes this irrelevancy and redundancy to reduce storage requirements. In this
Kundur Deepa +3 more
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IEEE AccessTo identify the compressed power grid fault data quickly and effectively, this paper presents a spatiotemporal location fault diagnosis method for the data compressed with set partitioning in hierarchical trees (SPIHT) algorithm.
Tao Liu +6 more
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Robust Image Embedded Watermarking Using DCT and Listless SPIHT
Future Internet, 2017 This paper presents a DCT-based (DCT: discrete cosine transform) listless set partitioning in hierarchical trees (SPIHT) digital watermarking technique that is robust against several common attacks such as cropping, filtering, sharpening, noise ...
J. L. Divya Shivani, Ranjan K. Senapati
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MEDICAL IMAGES COMPRESSION BASED ON SPIHT AND BAT INSPIRED ALGORITHMS
Iraqi Journal for Computers and Informatics, 2019 There is a significant necessity to compress the medical images for the purposes of communication and storage. Most currently available compression techniques produce an extremely high compression ratio with a high-quality loss.
Sarah Jasim
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PARAMETRIC EVALUATION ON THE PERFORMANCE OF VARIOUS IMAGE COMPRESSION ALGORITHMS [PDF]
ICTACT Journal on Image and Video Processing, 2011 Wavelet analysis plays a vital role in the signal processing especially in image compression. In this paper, various compression algorithms like block truncation coding, EZW and SPIHT are studied and ana- lyzed; its algorithm idea and steps are given ...
V. Sutha Jebakumari +1 more
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四川大学学报. 自然科学版, 2007 在研究图像小波分解系数特点和SPIHT算法的基础上,提出了一种改进的SPIHT图像编码压缩算法.针对SPIHT算法没有利用同一子带相邻重要系数的相似性及在阈值为4、2、1这三层的大编码量,提出了在这三层编码用邻域内重要系数的绝对值均值代替各重要系数的绝对值来进行编解码;并且加深对大系数的重视程度,在前几个阈值时,对首次发现的重要系数进行三位二进制位的精细化.实验表明,在中、高压缩比情况下,本算法的重构图像峰值信噪比(PSNR)要优于原算法,并且视觉质量更好.
秦琴 +4 more
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Optimized Progressive Coding of Stereo Images Using Discrete Wavelet Transform [PDF]
Journal of Systemics, Cybernetics and Informatics, 2003 In this paper, a compression algorithm is introduced which allows the efficient storage and transmission of stereo images. The coder uses a block-based disparity estimation/ compensation technique to decorrelate the image pair.
Torsten Palfner +2 more
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PSNR Comparison of Lifting Wavelet Decomposed Modified SPIHT Coded Image with Normal SPIHT Coding
International Journal of Computer Applications, 2014 Today’s world is the era of communication i.e. sending some information from one point to another. And images are one of the commonly used multimedia, because of the application in almost every field of engineering i.e. biomedical, astronomical, geological etc.
Mukesh Pathela +2 more
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EFFICIENCY SPIHT IN COMPRESSION AND QUALITY OF IMAGE
مجلة كلية التربية للبنات, 2019 Image compression is an important tool to reduce the bandwidth and storage requirements of practical image systems. To reduce the increasing demand of storage space and transmission time compression techniques are the need of the day.
Asst. Lecturer Enas M. Jamel
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