lossy compression


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Related to lossy compression: Lossless compression

los´sy com`pres´sion


n.1.(Computers) The compression of binary data into a form which, when it is re-expanded, has most, but not all, of the original information. It is used primarily for compression of images and sounds, and is designed to provide a high degree of compression at the cost of a slight loss of data. It is expemplified by the JPEG compression standard. Images compressed by a lossy compression algorithm are re-expanded into an image close, but not identical to the original image; the difference between the original and the reconstructed image may be imperceptible to normal viewing by the eye.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
As the name depicts lossy compression, discards some data permanently to represent the content.
Semantic compression is generally lossy compression, namely, allowing that there is a certain error between the compressed data and the original data.
Comparison of lossy compression is difficult, as the quality is inherently subjective.
Joint Photographic Expert Group (JPEG) is a lossy compression technique to store 24 bit photographic images.
(2) No standard can be in the same yard flow at the same time provide high-performance lossy compression and lossless compression.
In particular, efficiency of clone/prototype areas detection needs improvement under conditions of lossy compression in case when the cloning aims the hiding of an object (objects) using the prototype which is a part of the DI background area.
Audio Codec Market by Component (Hardware and Software), Channel Type (Mono-Codec, Stereo Codec, and Multi-channel Codec), Compression Type (Non-Compression, Lossless Compression, and Lossy Compression), Application, & Geography - Global Forecast to 2022
It cannot use the lossy compression technique because it needs to recover the exact original file from the compressed file.
Data compression can be classified into two categories, namely, lossless and lossy compression. Moving object trajectory compression aims to reduce the size and memory space of a trajectory on the premise that the information contained in trajectory data is reserved; that is to say, in order to cut down the size of data, it removes redundant location points while ensuring the accuracy of the trajectory [6].
For lossy compression, distortion was characterized by a) The peak signal to noise ratio (PSNR), which for an 8-bit decompressed image is defined as [22, 23]: