lossy


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lossy

(algorithm)
A term describing a data compression algorithm which actually reduces the amount of information in the data, rather than just the number of bits used to represent that information. The lost information is usually removed because it is subjectively less important to the quality of the data (usually an image or sound) or because it can be recovered reasonably by interpolation from the remaining data.

MPEG and JPEG are examples of lossy compression techniques.

Opposite: lossless.
References in periodicals archive ?
The response x(t) should be cut by a time window w(t) of duration T and multiplied by a damping function associated with the Q factor of the lossy chamber, which can be written as
The detailed study of a lossy parallel plates waveguide using the rigorous derivation of the dyadic Green's function, has been presented in [9].
As a result compression standard using DCT is termed as lossy (Gonzalez et al., 2009).
The time-dependent Maxwell's curl equations in a linear, lossy, and non-dispersive medium with permittivity [epsilon], permeability [mu], and electric conductivity [sigma] can be written as
Interestingly, in constructing proposed lossy nonlinear network we were motivated with a very interesting example of nanobioelectronics problem.
In exchange for achieving higher, lossy compression ratios, often 10:1 or greater, you accept data that is similar to but not exactly the same as the original data, hence the term lossy.
Lossy effects will be important when the interconnect-limited rise time is longer than half a bit period, or RT > 0.5 x 1/BR, with RT the interconnect limited rise time, or 10 psec/inch x Length, and BR is the signal bit rate.
The software is a beta version of the company's JPEG2000 implementation and allows software and hardware devices to compress and decompress lossless or lossy image data.
where [sigma] is the conductivity, and [b.sub.lossy] the thickness of the lossy layer.
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