Image analysis – Color image processing – Compression of color images
Reexamination Certificate
2007-08-07
2007-08-07
Bella, Matthew C. (Department: 2624)
Image analysis
Color image processing
Compression of color images
C382S248000, C348S395100, C348S398100, C375S240180, C375S240190
Reexamination Certificate
active
10669714
ABSTRACT:
A volume data encoder with high encoding efficiency is provided. The object of the coding is volume data which contains a plurality of tomogram planes output from a CT and an MRI. A header analysis unit separates each plane image into header information and pixel information. A header compression unit compresses the separated header information. On the other hand, a two-dimensional transform unit conducts frequency decomposition on the pixel information. A skip portion detection and table generation unit detects skip portions that are the same in all coefficients in a z-direction, and stores them in a table. A one-dimensional transform unit conducts one-dimensional transform on the pixel information for coefficients except the skip portions. A unit block division unit divides each subband into unit blocks. An entropy encoding unit determines a parameter for entropy encoding according to statistical properties of all coefficients in all unit blocks included in each class.
REFERENCES:
patent: 6128592 (2000-10-01), Miyazaki et al.
patent: 6314452 (2001-11-01), Dekel et al.
patent: 6665446 (2003-12-01), Kato
patent: 7035473 (2006-04-01), Zeng et al.
patent: 7068848 (2006-06-01), Park et al.
patent: 7092965 (2006-08-01), Easwar
patent: 2002-204168 (2002-07-01), None
Menegaz et al. (“Object-based Coding of Volumetric Medical Data,” Proc. 1999 ICIP, vol. 3, Oct. 24-28, 1999, pp. 920-924).
Kamath et al. (“Compression and Accelerated Rendering of Volume Data Using DWT,” SPIE vol. 3457, Jul. 1998, pp. 296-303).
K.J. Jones (“3-D Wavelet Image Processing for Spatial and Spectral Resolution of LANDSAT Images,” SPIE vol. 3391, 1998, pp. 219-224).
Schelkens, P. et al. “An Overview of Volumetric Coding Techniques” Coding of Still Pictures, ISO/IEC JTC 1/SC 29/WG 1 N2613, Jul. 15, 2002, pp. 13-22.
Hashimoto Masayuki
Koike Atsushi
Matsuo Kenji
Nakajima Yasuyuki
Hung Yubin
KDDI Corporation
Westerman, Hattori, Daniels & Adrian , LLP.
LandOfFree
Encoder for volume data does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encoder for volume data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoder for volume data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3847347