lossy compression

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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 ?
For example in 2018, Gidel announced its own lossless compression IP which utilised just one per cent of an FPGA board.
SafeRide's CAN Optimizer is a machine learning based solution that decreases the bandwidth needed to upload CAN data to the cloud offering more than 95 percent decrease in data size, with a typical lossless compression ratio more than five times better than other compression algorithms that are currently on the market.
In-camera image corrections and lossless compression are enabled for high-speed transfer via SuperSpeed USB3 and 10G Ethernet.
Thedesignof lossless compression couldgreatlyimprove thequalityof theimages,accordingtodesigners.
Emerald is the first KVM platform, the company claims, to support DisplayPort 1.2 4K video at 60 Hz and 10-bit colour depth over standard IP network switches and connections, enabling 4K image transmission with mathematically lossless compression.
Also in this case it is clear that compressing after an encryption does not help; instead it increases the file size with respect to both the encrypted and the original file sizes for lossless compression algorithms.
The ROI region is compressed with the JPEG-LS lossless compression algorithm.
Fujitsu Laboratories has developed FPGA parallelization technology that can significantly reduce the processing time required for data compression and deduplication by deploying dedicated computational units specialized for data partitioning, feature value calculation, and lossless compression processing in a FPGA in a highly parallel configuration, and by enabling highly parallel operation of the computational units by delivering data at the appropriate times based on predictions of the completion of each calculation.
To compute the total lossless compression bit rate, a different codebook was assumed to encode each pyramid level l.
Lossless compression has long been the default choice for scientific data.