ISO/IEC 13818 7 was prepared by Technical Committee ISO/IEC/TC JTC 1, Information Technology, Subcommittee SC 29, Coding of Audio, Picture, Multimedia and Hypermedia Information.
This zip contains a simple paper of SPIHT generated streams run length encoded ... later i ll be posting the MATLAB source code also and also SPIHT with Arithmetic coding
Image Compression
A collection of simple routines for image compression using different techniques.
圖象壓縮的不同方法
BTCODE:
Image compression Using Block Truncation Coding.
PYRAMID:
Image compression based on Gaussian Pyramids.
DCTCOMPR:
Image compression based on Discrete Cosine Transform.
IMCOMPR:
Image compression based on Singular Value Decomposition.
The given codes can be also used in 2D noise suppression.
Notes:
The function "conv2fft" performs a 2D FFT-based convolution.
Type "help conv2fft" on Matlab command window for more informations.
S60-programming-a-tutorial-guide-symbian.
1 Introduction to Mobile-Phone Systems 1
1.1 Wireless Technologies 1
1.2 Cellular Systems 2
1.3 Elements of a Mobile-Phone System 4
1.4 Keeping Users’ Calls Separate 5
1.5 Multipath Propagation 7
1.6 2G Mobile-Phone Systems 9
1.7 GPRS Systems 10
1.8 3G Mobile-Phone Systems 13
1.9 IP Multimedia Subsystem 16
1.10 Mobile-Phone Hardware 17
2 Introduction to Symbian OS 19
Introduction 19
2.1 The Development of Symbian OS 20
2.2 Symbian OS User Interfaces 21
2.3 Coding Idioms 23
2.4 Tool Chains 28
3 The Console Application 33
Introduction 33
3.1 Creating a Console Application 33
3.2 CBase Classes 38
3.3 Protecting Memory 38
3.4 Putting It Into Practice: An Engine for a Simple
Card Game 46
Summary 56
CodezBank is just a small application that stores source code snippets organized in a hierarhichal maner with basic search ability. You just copy and paste the code snippet into or from this application via clipboard. If you have a bag of coding tricks then you want to keep them in this app.
I ve written some many years ago dynamic Huffman algorithm to compress and decompress data. It is mainly targeted to data with some symbols occuring more often than the rest (e.g. having some data file consisted of 3 different symbols and their total number of occurence in that file s1(1000), s2(200), s3(30) so the total length of file is 1000+200+30=1230 bytes, it will be encoded assigning one bit to s1 and 2 bits to s2, s3 so the encoded length will be 1*1000+2*(200+30)=1460 bits=182 bytes). In the best case the file consisted of just one symbol will be encoded with compression ratio as 1:8. Huffman coding is used in image compression, however in JPEG2000 arithmetic codec is imployed.
數(shù)字圖像處理基礎(chǔ)理論，英文資料Restoration and Enhancement
Space Pictures (blurred, noisy, distorted)
Computerized Tomography
Coding
Transmission – Teleconferencing
Storage – Land SAT Images
Pattern Recognition
Blood Cell Analysis
Remote Sensing
Robotic Vision
Computer Graphics
Flight Simulation
Auto Body Design
Special Effect in Movie
misra (The Motor Industry Software Reliability Association 汽車工業(yè)軟件可靠性聯(lián)會(huì)) 是位于英國(guó)的一個(gè)跨國(guó)汽車工業(yè)協(xié)會(huì)，其成員包括了大部分歐美汽車生產(chǎn)商。其核心使命是為汽車工業(yè)提供服務(wù)和協(xié)助，幫助廠方開(kāi)發(fā)安全的、高可靠性的嵌入式軟件。這個(gè)組織最出名的成果是所謂的misra C Coding Standard，這一標(biāo)準(zhǔn)中包括了127條C語(yǔ)言編碼標(biāo)準(zhǔn)，通常認(rèn)為，如果能夠完全遵守這些標(biāo)準(zhǔn)，則你的C代碼是易讀、可靠、可移植和易于維護(hù)的。最近很多嵌入式開(kāi)發(fā)者都以misra C來(lái)衡量自己的編碼風(fēng)格，比如著名的uC/OS-II就得意地宣稱自己99％遵守misra標(biāo)準(zhǔn)。
