Results 71 to 80 of about 6,336 (186)
, 2011 A fast, efficient, and scalable algorithm is proposed, in this paper, for re-encoding of perceptually quantized wavelet-packet transform (WPT) coefficients of audio and high quality speech and is called “adaptive variable degree- zero-trees” (AVDZ).
Omid Ghahabi, Mohammad Hassan Savoji
core +1 more source
, 2011 [[abstract]]由於心電圖(ECG)資料如果不經過壓縮而儲存會非常佔用儲存空間，將導致大大地降低其實用性與即時性，但也不能因為壓縮過程而導致過大的失真。藉於此因素，基於1-D RRO-NRDPWT的心電圖壓縮系統則被提出，而此心電圖壓縮系統最主要的特點在於能解決傳統小波轉換所產生的錯誤傳播(error propagation)與字元增長效應(word-length growth effect)。此心電圖壓縮系統所考慮的重點為在高壓縮率的同時不能產生太大的失真，即壓縮率(Compression ...
Weng Shih-Min, 翁仕旻
core
Modified Set Partitioning In Hierarchical Tree
SCIS & ISIS, 2008 Bhagat, Narendra Anant +3 more
openaire +1 more source
, 2015 [[abstract]]轉換域資料壓縮法歷經多年淬鍊，在已呈現的各種實驗中，離散小波轉換明顯地都能得到較佳的壓縮效率。基於離散小波轉換的資料壓縮法近年亦被應用於一維心電圖資料壓縮並得到很好的效率。離散小波轉換的一重要特性是越低頻的轉換係數，其絕對值越大。這種資料特性非常適合以階層樹集合分割(SPIHT)演算法進行編碼。但由於傳統SPIHT編碼演算法係利用列表搜尋方式，需要大量記憶體支援，且搜尋階層樹的每個節點相當耗時，不適合硬體的實現。為了克服這些困難，一種改良型階層樹集合分割(MSPIHT ...
林孝頤, Lin, Xaio-Yi
core
, 2008 In this paper, we propose a bandwidth efficient error resilience scheme for wavelet based video transmission over wireless channel by introducing an additional Wyner-Ziv (WZ) stream to protect region of interest (ROI) in a frame.
Zhuo, X, Loo, KK, Cosmas, J, Yip, PY
core
Strategies for image visualisation and browsing
, 2010 PhDThe exploration of large information spaces has remained a challenging task even though the proliferation of database management systems and the state-of-the art retrieval algorithms is becoming pervasive.
Janjusevic, Tijana
core
Invisible watermarking method for images
, 2008 Bachelor´s thesis deals with embedding of invisible watermark into image. The methods used for reach the main objective of this thesis are given in the first part.
Trbušek, Pavel
core
Beyond Linear Risk: A Machine Learning Approach to Understanding Perinatal Depression in Context. [PDF]
Multivariate Behav ResSherlock P +11 more
europepmc +1 more source
Hardware Prototyping Of An Efficient Image Compression System In Real-Time For Mobile Communication
, 2008 This project uses a wavelet-based image compression algorithm using Set Partitioning in Hierarchical Trees (SPIHT), as it is found to be the most suitable for real-time imaging ...
Akter, Masuma
core
Bioinformatics of Combined Nuclear and Mitochondrial Phylogenomics to Define Key Nodes for the Classification of Coleoptera. [PDF]
Syst BiolCreedy TJ +5 more
europepmc +1 more source