Results 201 to 210 of about 6,054 (242)
Some of the next articles are maybe not open access.
Using set partitioning in hierarchical trees to authenticate digital images
Signal Processing: Image Communication, 2003In this paper, we present a new image authentication scheme to verify the contents of multi-resolution digital images. The authentication message of a given image is generated based on the set partition in hierarchical trees (SPIHT) encoding. When the original authentication message and the SPIHT decoded message of the image to be authenticated are ...
Piyu Tsai +2 more
openaire +1 more source
Wyner-Ziv Video Coding Based on Set Partitioning in Hierarchical Tree
2006 International Conference on Image Processing, 2006In this paper, we propose a Wyner-Ziv video coding scheme based on set-partitioning in hierarchical trees (SPIHT) which can utilizing not only the spatial and temporal correlations but also the high-order statistical correlations. Wyner-Ziv theory on source coding with side information is employed as the basic coding principle, which makes the ...
Xun Guo 0002 +4 more
openaire +1 more source
3D-Memory efficient listless set partitioning in hierarchical trees for hyperspectral image sensors
Journal of Intelligent & Fuzzy Systems, 2023Hyperspectral (HS) images contain rich spatial and spectral information. Due to its large size, it is difficult to store, process, analyze, or transmit the critical information contained in it. The compression of hyperspectral images is inevitable. Many transform based Hyper Spectral Image Compression Algorithms (HSICAs) have been proposed in the past ...
Harshit Chandra +5 more
openaire +1 more source
Memory Efficient Set Partitionning in Hierarchical Tree (MESH) for Wavelet Image Compression
Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005., 2006This paper presents a memory efficient version of set partitioning in hierarchical tree (SPIHT). The proposed coder termed as memory efficient SPIHT (MESH), uses a single re-usable list instead of three continuously growing linked lists as in conventional SPIHT.
Harish Arora +3 more
openaire +1 more source
Journal of Electronic Imaging, 2005
The discrete cosine transform (DCT) is widely used in many practical image/video compression systems because of its compression performance and computational efficiency. We adopt the DCT and the modified set partitioning in hierachical trees (SPIHT) algorithm that was designed initially for encoding the dis- crete wavelet transform (DWT) coefficients ...
Wen-Chien Yen +2 more
openaire +1 more source
The discrete cosine transform (DCT) is widely used in many practical image/video compression systems because of its compression performance and computational efficiency. We adopt the DCT and the modified set partitioning in hierachical trees (SPIHT) algorithm that was designed initially for encoding the dis- crete wavelet transform (DWT) coefficients ...
Wen-Chien Yen +2 more
openaire +1 more source
Wavelet packet transform basis selection method for set partitioning in hierarchical trees
Journal of Electronic Imaging, 2008The dyadic wavelet-based set partitioning in hierarchical trees (SPIHT) is highly efficient in coding nontextured images while the wavelet packet transform (WPT) is able to provide an optimal representation for textured images. However, incorporating the WPT with SPIHT to improve the performance of SPIHT is not as straightforward as it would seem ...
Ashraf A. Kassim +2 more
openaire +1 more source
IMAGE EMBEDDED ENCONDING USING SET PARTITIONING IN HIERARCHICAL TREE - SPIHT
2018 29th Irish Signals and Systems Conference (ISSC), 2018This paper discusses an embedded image compressing technique using the simplified Set Partitioning Hierarchical Tree algorithm implemented in the digital signal processing board Blackfin ADSP BF561 from Analog Devices, reaching a compression of 0.5 bits per pixel an acceptable quality of the recovered image determined using the mean opinion score over ...
Eduardo A. Gerlein +3 more
openaire +1 more source
Medical image compression with set partitioning in hierarchical trees
Proceedings of 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2002Wavelet-based image compression is proving to be a very effective technique for medical images, giving significantly better results than the JPEG algorithm. A novel scheme for encoding wavelet coefficients, termed set partitioning in hierarchical trees, has recently been proposed and yields significantly better compression than more standard methods ...
openaire +1 more source
Memory efficient set partitionning in hierarchical tree for color image coding
Proceedings of 2004 International Symposium on Intelligent Multimedia, Video and Speech Processing, 2004., 2005A memory efficient version of color SPIHT with enhanced features is presented. The proposed coder, termed color memory efficient SPIHT (CMESH) extends the use of set partitioning in hierarchical trees to color images. The exciting feature of the algorithm is that it uses a single re-usable list instead of three continuously growing linked lists as in ...
F. Ghani, E. Khan, H. Arora
openaire +1 more source
Threshold setting model for the set partitioning in hierarchical trees (SPIHT) for audio
SPIE Proceedings, 2011This paper describes applying the Set Partitioning in Hierarchical Trees (SPIHT) algorithm using a devised model to compress audio signals. It allows choosing the amount of compression based upon bit rate requirements. A threshold setting model, based on energy and frequency patterns of the signal is used to assist the SPIHT encoder set efficient ...
openaire +1 more source