Definitions for "Lossless compression"
Related Terms:
Lossless, Lossy, Lossy compression, Compression, lossy, Aiff-c, Motion jpeg, Mpg, Apple lossless, Decompress, Mjpeg, Decompression, Jpeg 2000, Mp3, Compression, Flac , Lzw compression, Jbig, M-jpeg, Image compression, Lzw, Aiff, Moving pictures expert group, Mpeg, Compress, Wave, Proprietary format, Jpeg, jpg, Aac, Rle, Cinepak, Joint photographic experts group, Ogg vorbis, Mp4, Moving picture experts group, Jpeg, Ogg, Jfif, Container format, Video codec, Jpeg - joint photographic experts group, Motion picture experts group, Moving pictures experts group, Tga, Jpg/jpeg, Jpeg file, Jpg or jpeg, Graphical interchange format, Mpeg1, Wav
A data compression technique that makes it possible to recover the original data exactly, with no loss in image quality as a result.
Data compression technique that reduces storage space required for an image file without causing a loss of data. The compressed file can be easily restored to its original state. In most cases, lossless compression can reduce the file size by 50%.
Data compression methods that rearrange or re-code data in a more compact fashion and lose no information when decompressed. Because all data are preserved, there is a distinct limit to the amount of compression. (a.k.a. lossy compression or data compression)
A compression algorithm that doesn't lose any of the original data. The original image or sound is completely preserved.
Ensures that the original data is exactly recoverable with no loss in image quality.
(n.) The compression of data that guarantees the original data can be restored exactly. This type of compression typically leads to compression ratios of about three to one. Some compression techniques, such as JPEG, combine lossy compression and lossless compression algorithms.
From Portable Network Graphics (PNG) Specification (Second Edition) ( 2003-11-10) method of data compression that permits reconstruction of the original data exactly, bit-for-bit.
A compression scheme that preserves all of the original data.
is a category of digital image compression types which possess the following characteristics. ° The original digital images can be exactly (bit for bit) reproduced as originally acquired. ° It does not affect post-decompression digital image processing. ° It can achieve only relatively low levels of data reduction.
File compression that reduces file size without the loss of data (a gif is a lossless file format).
"A form of compression in which no data is lost
A compression scheme in which no data is lost. In video compression, lossless data files are usually very large.
A data compression technique which results in data being returned to its original form without any loss of information when it is decompressed. The decompressed file and the original file are identical. See Lossy compression.
A technique of reducing file size by eliminating redundancies. Lossless compression formats, such as Zip, must be expanded before use, but they reproduce the original file exactly, without data loss.
This method compresses data without loss of quality. WinZip and WinRAR are two popular examples, allowing users to compress large video, audio, picture, or data files to save space. These files can then be unzipped with the original file quality preserved. Lossless compression is the best method for crucial data such as executable files or source code, when any degradation in data would result in an inoperable file.
once an object is compressed this process allows every single bit of data that was originally in the file to continue after the file is uncompressed. All of the information is completely restored. This is generally the technique of choice for text or spreadsheet files, where losing words or financial data could be a problem. Last Reviewed: 2003-04-23
Data compression technique that reduces the number of bits used to represent data in a file, thereby reducing its size while retaining all the original information. This makes it suitable for computer code and text files. Lossless compression typically achieves space savings of 30%.
A compression technique that preserves all the original information in an image or other data structures.
A compression method in which the reconstructed data is identical to the original source.[Go to Top of Page
Lossless compression is a graphic design expression and refers to a file compression technique where your file quality is preserved when compressed, instead of losing the data.
Any method of data compression that guarantees the original data can be reconstructed exactly, bit-for-bit.
A compression algorithm that reduces the storage space needed for an image file without real loss of data. The uncompressed image can be reconstructed to be identical to the original. Continuous-tone images will on the average be reduced to half the original size.
A compression technique that makes the file size smaller without sacrificing sound quality.
Method of reducing video size in which the original image is preserved. Since all image data is retained, the file size is large relative to one that loses some image data. If details in the video are important, lossless compression is your best option since it retains the original image.
A method of reducing the size of an image without sacrificing quality.
This is a way of saving a graphic file in a compressed format to reduce the file size without any loss of image quality. The PNG format useless this kind of lossless compression for example.
A form of compression that does not degrade the quality of the image.
A compression that returns all the original data when uncompressed.
A type of file compression that reduces file size without losing image date. PNG s and GIF s are common lossless file formats.
These compression formats, such as those used in GIF and TIFF files, retain all of the image data.
In general when we compress a file we want that file, when subsequently uncompressed, to be identical to the original, with no loss of data. You want your Word document to be identical to the original once it is uncompressed. A software developer distributing software in a zip archive wants to know that you receive an identical copy of the file. With multimedia files such as video it is not critical that every bit be identical to the original source file. See also Lossy Compression.
A form of file compression that allows compression and subsequent de-compression without any loss of data. Compared to "lossy" compression, lossless does not compress the data to as great of a degree.
A process for compressing data in which information is arranged in a more concise form and restored to its original state upon decompression.
A compression technique that decompresses data back to its original form without any loss. The decompressed file and the original are identical. Contrast with lossy compression.
See compression ratio.
A data compression technique that reduces the file without sacrificing any of the original data. In lossless compression, the expanded or restored file is an exact replica of the original file before it was compressed.
A compression method that reduces the size of a file without any loss of data.
An electronic graphics compression equation that reduces file size with no loss of image information. Lossless compression formats, like GIF, are typically used for line art or logos, where any information loss would be noticeable.
In graphic design, lossless compression refers to a data compression technique where the file quality is preserved and no data is lost. Lossless compression is commonly used on GIF images, but can only reduce file size to about half of its original size. Lossy compression, by contrast, eliminates some data can further decrease file size.
Compression techniques that allow the original data to be recreated without loss.
Any compression method that allows for the exact reconstruction of the original data, bit for bit. This is the type of compression used in PNG and essentially all compressors of textual data, such as Zip and gzip.
The compression of data in such a way that the original data can be restored exactly. Huffman encoding is an example of a lossless compression technique. Some compressors, such as the JPEG baseline sequential compressor, combine lossy and lossless compression algorithms. ( See also lossy compression.)
compression that keeps all the data bits in the image so that image or sound quality doesn't degrade.
A data compression technique where the recovered data after decompression is precisely the same as before compression.
A data compression process that ensures that the original data is exactly recoverable. An example is MLP compression for DVD-Audio.
Compression that doesn't discard data, thereby preserving the original quality. DV is an example.
A compression algorithm that reduces a file size but does not loose any data. The uncompressed image is identical to the original
This compression format minimizes the size of files by creating an internal shorthand, which restores the image to its original state before compression.
A class of data compression algorithms that allow the original data to be reconstructed exactly from the compressed data. ( http://en.wikipedia.org/wiki/Lossless_data_compression)
a compression method that retains every bit of data that was in the original digital file (such as ITU Group 4)
A process by which the data of a PCM audio signal can be more efficiently packed into a channel. Although lossless compression of audio does not work in the same way, users of computers will be aware of algorithms such as ZIP and LZW that allow more efficient use of disc storage. Lossless compression of audio has the same effect: less space is used on the disc, which has the important effect of reducing the data rate. Unlike lossy compression, lossless compression systems return the input data exactly from a decoder. For clarity, in this document losslessly compressed PCM is referred to as 'packed audio'.
An image compression scheme that retains all the original image's detail. Repeated cycles of opening, modifying, and saving a file in this format will not lead to a loss of quality. TIFF is an example of a graphic format that uses a lossless compression scheme.
A data compression algorithm that retains all the information in the data, allowing it to be recovered perfectly by decompression. A means for reducing the storage space required for an image. The decompressed image is bit-for-bit identical to the original. Unix compress and GNU gzip perform lossless compression.
a reversible way of reducing the size of data while preserving it
A compression format that recovers all the original data from the compressed version. MLP is a lossless compression scheme.
Data compression techniques in which no data is lost.
A file compression scheme that does not throw away image information in the process
A type of file compression in which images can be shrunk to a smaller file size without losing any image quality. In compressing these files, however, the amount of colors is reduced to 256, and as a result, some images will not look right (especially photographs with continuous color). TIFF and GIF are examples of files that feature lossless compression.
A form of compression where no data is lost, and therefore, does not affect image quality. TIFF is a lossless file format.
A compression scheme that reduces file sizes without discarding any image information. Used by GIF and PNG. See lossy compression.
A system for reducing the number of data bits (density) in a musical signal without corrupting the original.
Exact construction of image, bit-by-bit, with no loss of resolution or colour fidelity.
In data compression, the process by which the information is recovered without any alteration after the decompression stage. This technique is used for computer-based data or programs. It may also be required in certain multimedia applications where the accuracy of the information is essential, such as in medical imaging. Lossless compression is also called bit-preserving or reversible compression. Examples of lossless compression include run-length encoding or Huffman encoding.
1) Reduction of the storage size of digital data by employing one or more appropriate algorithms in such a way that the data can be recover without loosing integrity. 2) Reduction of the amount of data that needs to be transmitted per unit time though an analogous real-time process that does not compromise the ability to completely restore the data.
Any compression method that completely preserves data in its original form.
A compression technique that will retain all of the file's original image characteristics. The perfect lossless compression technique remains elusive.