huffman-code

I was writing a program of Huffman compression using C++ but I faced with a problem of compressed file's structure. It needs to store some structure in my new file that can help me to decode this file. I decided to write a table of codes in the beginning of this file and then build a tree from this table to decode the next content, but I do not know in which way it is better to store the table (I mean I do not know structure of the table, I know how to write things in binary mode) and how to build the tree from this table. Sorry for my English. Thank you in advance. You could try writing a

Im thinking to use the Huffman coding to make an app that takes pictures right from the iPhone camera and compress it. Would it be possible for the hardware to handle the complex computation and building the tree ? In other words, is it doable? Thank you If you mean the image files (like jpg, png, etc), then you should know that they are already compressed with algorithms specific to images. The resulting files would not huffman compress much, if at all. If you mean that you are going to take the UIImage raw pixel data and compress it, you could do that. I am sure that the iPhone could handle

I'm trying to solve a Huffman Coding problem, but I'm not completely sure I understand the topic completely. I am trying to figure out if the following are is a valid Huffman Code: A: 0 B: 01 C: 11 D: 110 E: 111 What I'm thinking is that it is not valid, because A, or 1, would infringe on B, or 01. I'm not positive though. Could someone enlighten me on this? Edit: I'm sorry I meant to type A as 0 and not 1. No. A Huffman code is a prefix code, which means that no code can be a prefix of any other code. In your example, A is a prefix of B, and C is a prefix of both D and E. A valid prefix code

I'm working on a Huffman coding/decoding project in C and have a good understanding of how the algorithm should store information about the Huffman tree, re-build the tree during decoding, and decompress to the original input file using variable-length codes. When writing to my compressed file, I will output a table of 256 4-byte integers containing unique frequencies, and I know I will also have to figure out a way to handle EOF - worrying about that later. My question is how should I complete the necessary bit-wise operations to write a stream of variable-length codes to a series of 1-byte

I am currently working on implementing a program based on the huffman algorithm in Java, and I am at the stage where I need to output the encoded content to a file. I am a bit confused about how to implement the header and eof needed for decoding. For my header at the moment I have all the unique values that occur from the input file and their frequency, but on some articles I have seen people do it with 0 or 1 represents the nodes and then the frequency (which I am a bit puzzled by as it doesn't say what the symbol is). Also, for the EOF as I understand it I encode it like the symbols so it

how do you encode words using the huffman code such as NEED Huffman encoding basically uses variable-length bit strings to represent tokens (generally characters with a couple of exceptions). The more common a token is, the shorter it's bit-length is and this is (usually) dynamic as the stream is processed. There are usually two special tokens, ESCAPE and END-STREAM. Encoding maintains a dictionary which is basically a lookup of the bit sequences to get a token. Initially it contains only the two special tokens. The initial bit sequences for ESCAPE and END_STREAM could be 0 and 1 (which is