Image analysis – Image compression or coding – Pyramid – hierarchy – or tree structure
Reexamination Certificate
1998-03-30
2003-03-25
Patel, Jayanti K. (Department: 2725)
Image analysis
Image compression or coding
Pyramid, hierarchy, or tree structure
C348S155000, C370S207000, C370S210000, C375S240220, C375S240230, C375S240240, C375S241000, C375S265000, C382S236000, C382S238000, C382S248000, C382S250000, C382S253000
Reexamination Certificate
active
06539122
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates in general to data compression techniques and, more particularly, to data compression of hyperspectral imagery.
BACKGROUND OF THE INVENTION
Hyperspectral imaging is a process whereby images are recorded by sensing and storing energy in a number of narrow wavelength slices. For example, in a remote sensing application, information can be recorded in many different spectral bands to describe a scene of interest. Hyperspectral images generally include a vast amount of information about a scene of interest and therefore are very valuable analysis tools for scientists and researchers.
Many applications making use of hyperspectral imaging are satellite-based. The next generation of satellite based imaging systems will be capable of sensing scene radiation in hundreds of distinct wavelength regions. The High-Resolution Imaging Spectrometer (HIRIS) is an example of a future high-resolution multi-band spectrometer. HIRIS can collect 192 spectral bands in the 0.4-2.5 micrometer wavelength region, with each band on the order of 1,000×1,000 pixels. Combining these parameters with a radiometric sensitivity of 12 bits produces a single hyperspectral image which comprises several hundred megabytes of digital information. As can be appreciated, storage and/or transmission of multiple images having this size requires a vast amount of system resources (e.g., memory space, transmission time, etc.).
Therefore, a need exists for a method and apparatus for compressing hyperspectral imagery data.
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Desire Gregory
General Dynamics Decision Systems, Inc.
Jenner & Block LLC
Patel Jayanti K.
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