Method of coding image data using region of interest

Details Method of coding image data using region of interest Method of coding image data using region of interest

2006-06-27

2006-06-27

Dang, Duy M. (Department: 2627)

Image analysis

Image compression or coding

Pyramid, hierarchy, or tree structure

Reexamination Certificate

active

07068848

ABSTRACT:
A region of interest coding method based on the SPIHT algorithm, in which more bits are allocated with respect to a region of interest to quickly compress and restore an image, is provided. The region of interest coding method is applied to a multiple resolution coding operation. In the coding method, an image is coded using the SPIHT algorithm before a region of interest is set. When a region of interest is defined based on a region of interest mask and a parent mask, coefficients are coded with respect to a bit plane defined by a user, and a compensation coding operation is performed with respect to coefficients not related with the region of interest. The coding operation is performed based on the SPIHT algorithm by the amount of bits permitted in the bit plane of the remaining coefficients. Therefore, it is possible to implement compression and restoration of various images.

REFERENCES:
patent: 5764807 (1998-06-01), Pearlman et al.
patent: 6134350 (2000-10-01), Beck
patent: 6801665 (2004-10-01), Atsumi et al.
Atsumi et al. [“Lossy/Lossless Regions-of-interest Image Coding Based on Set Partitioning in Hierarchical Trees”, IEEE 1998, pp. 87-91].

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