公开(公告)号：KR1020020091294A

公开(公告)日：2002-12-06

申请号：KR1020010030007

申请日：2001-05-30

Applicant: 한국과학기술원

Inventor： 박근형 ,  이철수 ,  박현욱

IPC: H04N19/167

CPC classification number: H04N19/17 ,  H04N19/10 ,  H04N19/63

Abstract: PURPOSE: A method of coding a region of interest based on SPIHT is provided to propose a parent mask of the region of interest as well as a mask of the region of interest so as to perform compression and decompression rapidly. CONSTITUTION: A wavelet transform coefficient is compressed using SPIHT algorithm in the initial stage. When a region of interest is given, coefficients and a set of coefficients of a bit plane defined by a user are coded and compressed. Coefficients and a set of coefficients other than the above coefficients and set of coefficients are coded and compressed. Coefficients of remaining bit planes are compressed using the SPIHT algorithm. The region of interest is designated by a decoder.

Abstract translation: 目的：提供一种基于SPIHT编码感兴趣区域的方法，以提供感兴趣区域的父掩码以及感兴趣区域的掩码，以便快速执行压缩和解压缩。 构成：在初始阶段使用SPIHT算法压缩小波变换系数。 当给出感兴趣的区域时，由用户定义的位平面系数和一组系数被编码和压缩。 系数和除了上述系数和系数集之外的一系列系数被编码和压缩。 使用SPIHT算法压缩剩余位平面的系数。 感兴趣区域由解码器指定。

公开(公告)号：KR100389807B1

公开(公告)日：2003-07-02

申请号：KR1020010030007

申请日：2001-05-30

Applicant: 한국과학기술원

Inventor： 박근형 ,  이철수 ,  박현욱

IPC: H04N19/167

CPC classification number: H04N19/17 ,  H04N19/10 ,  H04N19/63

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.

Abstract translation: 提供了基于SPIHT算法的感兴趣区域编码方法，其中关于感兴趣区域分配更多比特以快速压缩和恢复图像。 感兴趣区域编码方法被应用于多分辨率编码操作。 在编码方法中，在设置感兴趣区域之前，使用SPIHT算法对图像进行编码。 当基于感兴趣区域掩码和父掩码来定义感兴趣区域时，相对于由用户定义的位平面来对系数进行编码，并且对与不与该区域相关的系数执行补偿编码操作 利益。 编码操作基于SPIHT算法通过剩余系数的位平面中允许的位数来执行。 因此，可以实现各种图像的压缩和恢复。