'Huffman' presentation slideshows

Multimedia Technology

Multimedia Technology. Tutor: Sebastian Keller Email: sebastian.keller@uni-mannheim.de Date: 07.06.2015. Navigation. Exercise Sheet 1 Exercise Sheet 2 Exercise Sheet 3 Exercise Sheet 4 Exercise Sheet 5 Exercise Sheet 6 Exercise Sheet 7 Exercise Sheet 8 Exercise Sheet 9

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Algorithms for Data Compression

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Algorithms for Data Compression

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exercise in the previous class

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Arithmetic Coding

Arithmetic Coding. How we can do better than Huffman? - I. As we have seen, the main drawback of Huffman scheme is that it has problems when there is a symbol with very high probability Remember static Huffman redundancy bound where is the probability of the most likely simbol.

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Global Precipitation Climatology Project (GPCP ): Status and Future

Global Precipitation Climatology Project (GPCP ): Status and Future Robert Adler George Huffman U . of Maryland-College Park NASA Goddard/SSAI. A WCRP/GEWEX Project. Climatology (1979- 2010). mm/ d. GPCP data used in > 1500 journal articles.

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Caitlin Moffitt CEE 6900

Tropical Rainfall Measurement Mission (TRMM) and Global Precipitation Measurement (GPM) Mission Remote Sensing Specifications and Applications. Caitlin Moffitt CEE 6900. TRMM Background . Joint mission between NASA and JAXA Launched on November 27, 1997 from Tanegashima, Japan

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So far

So far. Audio (scalar values with time), image (2-D data) and video (2-D with time) Higher fidelity means more data (more quantization resolution, more pixel resolution etc.) Human physiology can help achieve better compression because of limitations of human hearing, vision etc.

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Schema Tuning

Schema Tuning. Outline. Index Utilization Heap Files Definition: Clustered/Non clustered, Dense/Sparse Access method: Types of queries Constraints and Indexes Locking Index Data Structures B+-Tree / Hash LSM Tree / Fractal tree Implementation in DBMS Index Tuning

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Feature Extraction

Feature Extraction. Dmitry Chirkin, LBNL. IceCube Collaboration meeting in Berkeley, March 2005. What is Feature Extraction. Given an ATWD or FADC waveform, determine arrival times of all photons which contributed: hit series

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50 Years with Professor Larry Huffman

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Huffman Coding with Non-Sorted Frequencies

Huffman Coding with Non-Sorted Frequencies. Shmuel Tomi Klein Dana Shapira Bar Ilan University, Ashkelon Academic College, ISRAEL. Background and motivation. Using non-sorted frequencies. Dynamic compression of data packets. Relevance to other compression. Conclusions. Outline.

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Source Coding

Source Coding. Jean Walrand EECS. Outline. Compression Losless: Huffman Lempel-Ziv Audio: Examples Differential ADPCM SUBBAND CELP Video: Discrete Cosine Transform Motion Compensation. Compression. Goal:. Reduce the number of bits to encode source. Approaches:.

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Image Compression (Chapter 8)

Image Compression (Chapter 8). CSC 446 Lecturer: Nada ALZaben. Outline: . Introduction. Image Compression Model. Compression Types . Data Redundancy. Redundancy Types. Coding redundancy Lossless compression. Introduction.

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Transform Domain Distributed Video Coding

Transform Domain Distributed Video Coding. Outline. Another Approach Side Information Motion Compensation. Another Approach. 8X8 DCT Divided into low frequency & high frequency Low frequency - Wyner-Ziv Coding High frequency - run-length & Huffman. High Frequency.

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Huffman 压缩

Huffman 压缩. 原理. Huffman 编码是一种可变长编码方式，是由美国数学家 David Huffman 创立的，是二叉树的一种特殊转化形式。 编码的原理 ：将使用次数多的代码转换成长度较短的代码，而使用次数少的可以使用较长的编码，并且保持编码的唯一可解性。. 算法原则. Huffman 算法的最根本的原则：累计的 ( 字符的统计数字*字符的编码长度 ) 为最小，也就是权值 ( 字符的统计数字*字符的编码长度 ) 的和最小。. 1. Huffman 树（ 1 ）. Huffman 树是二叉树的一种特殊转化形式。以下是构件 Huffman 树的例子：

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The JPEG codec: How it works

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CSE332: Data Abstractions Lecture 28: Course Wrap-up

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On Evaluating the Performance of Compression Based Techniques for Sequence Comparison

UCD(x,y ) =. CD(x,y ) =. Distance measure 1: d(S, Q) = max{c(SQ) - c(S), c(QS) - c(Q)} Distance measure 2: d*(S, Q) = Distance Measure 3: d1(S, Q) = c(SQ) - c(S) + c(QS) - c(Q ) Distance Measure 4: d1*(S, Q) =. NCD 1 (x,y) =. (B). (A).

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