In honor of the Hutter Prize, what are the top algorithms (and a quick description of each) for text compression? Note: The intent of this question is to get a description of compression algorithms, not of compression programs. ...
I need to encode a sequence of frames with a lossless video codec and play them in a Java app. I don't care about the file size. The output frames should match the input frames exactly. Lossy codecs don't do this even at high bit rates. None of these well-known lossless video codecs appear to be supported in JMF or FMJ: HuffYUV CorePN...
I happened across this article about hardware based hard drive encryption and realized that not only would this give a great way to protect your data but it would also speed up the applications that we use to encrypt that data. This lead me to wonder... Would it be possible to do the same thing for compression so that all of the data i...
Does anyone of you know a lossless compression algorithm, which produces headerless outputs? For example do not store the huffman tree used to compress it? I do not speak about hard coded huffman trees, but I like to know if there is any algorithm that can compress and decompress input without storing some metadata in its output. Or is t...
I've got 100's (maybe 1000's) of products with 10-30 images of each product coming to an online store I've put together. I need to optimize the images' file sizes as much as possible without loosing image quality. I haven't used jpegtran, jpegoptim, or any other jpeg optimizer directly but I have noticed that punypng shrinks file sizes ...
I am having SQL Server2005 Database where half of the data is Image which isin various formats. I want to convert all the image into jpeg2000 format and want to resize(reduce the size) the Images also. The front end application is made on VC++/MFC which is displaying all the images on the dialogues. Please provide guidence for how to ch...
I've created an interactive image thing...but it takes a little too long to load. The interactive image thing is located at: southernwindowdesign.com It uses 5 images to step through each state (by clicking and dragging). I want to keep the images high-quality; so, any further jpeg compression is out (including punypng and smush.it)....
If we compare image procesing of the losslessly compressed images with the image processing of the lossy compressed images, does the latter provide the results comparable to the former one. I am asking this question because the images prodiced by lossless compression are ok for human eye but they vary at minute details which may effect...
I am working on a game engine which is loosely descended from Quake 2, adding some things like scripted effects (allowing the server to specify special effects in detail to a client, instead of having only a limited number of hardcoded effects which the client is capable of.) This is a tradeoff of network efficiency for flexibility. I'v...
this data is stored in an array (using C++) and is repitition of 125 bits each one varying from other also has 8 messages of 12 ASCII characters each at end..... Please suggest that should i use diffential compression within array and how? or i should apply some other compression scheme as whole onto the array? thanks in advance Regar...
i.e array is having 100*125 bits of data for each aircraft+8 ascii messages each of 12 characters what compression technique should i apply to such data ...
Is there a very fast compression library for Java? The standard gzip library is slower than I would like. I'm looking for something similar to http://www.oberhumer.com/opensource/lzo/ that's native Java code that provides fast compression and decompression. Thanks! A few other fast compression libraries for future reference: QuickLZ...