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Method and apparatus for reducing noise during lossy transformation processes
| Details |
Inventors: Persiantsev, Michael I.; Gubbi, Rajugopal R.;
Assignee: Cirrus Logic, Inc. (Austin, TX)
Primary Examiner: Wu; Jingge
Assistant Examiner:
Attorney, Agent or Firm: Murphy, Esq.; James J. Winstead Sechrest & Minick, P.C.
Processing digital information made up of a plurality of n-bit samples is performed by raising each n-bit value to an x-bit value, x being greater than n. The x-bit values represent mid-band values, wherein in this context a band includes a sequential set of x-bit values having n most significant bits in common and a mid-band value is then an x-bit value approximately centered between the lowest and highest x-bit values of a band including that mid-band value. In some embodiments, the digital information may comprise video information. Thus, the process may be applied prior to converting the video information from a first color space (e.g., a red-green-blue (R-G-B) color space) to a second color space (e.g., a luminance-chrominance (Y-Cr-Cb) color space). For a particular embodiment, n may be equal to five or six, and x may be equal to eight, however, in general n may be variable amongst different ones of the samples. |
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DETAILED DESCRIPTION Processing digital information made up of a plurality of n-bit samples is performed by raising each n-bit value to an x-bit value, x being greater than n.
The x-bit values represent mid-band values, wherein in this context a band includes a sequential set of x-bit values having n most significant bits in common and a mid-band value is then an x-bit value approximately centered between the lowest and highest x-bit values of a band including that mid-band value.
In some embodiments, the digital information may comprise video information.
Thus, the process may be applied prior to converting the video information from a first color space (e.
g.
, a red-green-blue (R-G-B) color space) to a second color space (e.
g.
, a luminance-chrominance (Y-Cr-Cb) color space).
For a particular embodiment, n may be equal to five or six, and x may be equal to eight, however, in general n may be variable amongst different ones of the samples.
Additional embodiments may provide a network server that includes a video processor configured to process video information as described above prior to converting the video information from a first color space to a second color space to produce color corrected video information.
The server may also include a radio configured to transmit the color corrected video information to at least one network client across a wireless link.
In some cases, the color corrected video information may be compressed prior to transmission.
Still further embodiments may provide color space correctors configured to perform the mid-banding processes, discussed above.
Further, computer networks may include a server configured to convert video information from a first color space to a second color space by first mid-banding the video information and then color correcting the mid-banded video information to produce color corrected video information.
Such networks may also include a client coupled in wireless communication with the server; the client being configured to receive the color corrected video information
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Image Analysis 
