Source: https://patents.google.com/patent/US8150173?oq=inventor%3A%22Arthur+R.+Hair%22
Timestamp: 2018-04-21 05:06:55
Document Index: 491808735

Matched Legal Cases: ['§371', 'Application No. 2004', 'art 1', 'art 1', 'Application No. 200510007933', 'Application No. 200710197162', 'Application No. 2005100079334', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2010', 'Application No. 10', 'Application No. 10', 'Application No. 10', 'Application No. 2004', 'Application No. 2004', 'Application No. 94137601']

US8150173B2 - Image coding method and apparatus, and image decoding method and apparatus - Google Patents
Image coding method and apparatus, and image decoding method and apparatus Download PDF
US8150173B2
US8150173B2 US11762456 US76245607A US8150173B2 US 8150173 B2 US8150173 B2 US 8150173B2 US 11762456 US11762456 US 11762456 US 76245607 A US76245607 A US 76245607A US 8150173 B2 US8150173 B2 US 8150173B2
US11762456
US20070230658A1 (en )
Kazuhiko Taketa
The present application is a continuation of U.S. patent application Ser. No. 11/718,291, filed on Apr. 30, 2007, which is a National Stage under 35 U.S.C. §371 of PCT/JP2005/019583, filed on Oct. 25, 2005, which in turn claims the benefit of Japanese Application No. 2004-316735, filed on Oct. 29, 2004, the contents of which are hereby incorporated by reference.
[Patent Document 1] Japanese Patent Application Laid-Open No. Hei 07-203434.
Nevertheless, in the above-mentioned Patent Document 1, images in a specified range and those in other ranges are coded by their respectively specified image qualities. Accordingly, at the time of a decoding they are limited by their specified image qualities, so that it is difficult to decode them with a various resolutions. Also, it is difficult to achieve a reproduction processing such as one for reproducing only an image of a specified range.
A wavelet transform unit 10 divides the inputted original image into sub-bands, computes wavelet transform coefficients of each of the sub-bands and then generates hierarchized wavelet transform coefficients. More specifically, the wavelet transform unit 10 applies a low-pass filter and a high-pass filter in the respective x and y directions of an original image, and divides the image into four frequency sub-bands so as to carry out a wavelet transform. These sub-bands are an LL sub-band which has low-frequency components in both x and y directions, an HL sub-band and an LH sub-band which have a low-frequency component in one of the x and y directions and a high-frequency component in the other, and an HH sub-band which has high-frequency components in both x and y directions. The number of pixels in the vertical and horizontal directions of each sub-band is ½ of that of the image before the processing, and one time of filtering produces sub-band images whose resolution, or image size, is ¼ of the image.
6. The image coding apparatus according to claim 5, wherein the image coding unit encodes the moving image in such a manner that image quality of each of the regions of interest within the plurality of the regions of interest defined on the moving image is different from image quality of other regions of interest within the plurality of the regions of interest according to the respective degree of priority.
US11762456 2004-10-29 2007-06-13 Image coding method and apparatus, and image decoding method and apparatus Active 2028-02-29 US8150173B2 (en)
JP2004316735A JP4656912B2 (en) 2004-10-29 2004-10-29 The image encoding device
JP2004-316735 2004-10-29
US11718291 US8208738B2 (en) 2004-10-29 2005-10-25 Image coding method and apparatus, and image decoding method and apparatus
PCT/JP2005/019583 WO2006046551A1 (en) 2004-10-29 2005-10-25 Image encoding method and device, and image decoding method and device
US11762456 US8150173B2 (en) 2004-10-29 2007-06-13 Image coding method and apparatus, and image decoding method and apparatus
US11718291 Continuation
PCT/JP2005/019583 Continuation WO2006046551A1 (en) 2004-10-29 2005-10-25 Image encoding method and device, and image decoding method and device
US20070230658A1 true US20070230658A1 (en) 2007-10-04
US8150173B2 true US8150173B2 (en) 2012-04-03
ID=36227791
US11718291 Active 2028-02-18 US8208738B2 (en) 2004-10-29 2005-10-25 Image coding method and apparatus, and image decoding method and apparatus
US11762456 Active 2028-02-29 US8150173B2 (en) 2004-10-29 2007-06-13 Image coding method and apparatus, and image decoding method and apparatus
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KR20160067032A (en) * 2014-12-03 2016-06-13 엑시스 에이비 Method and encoder for video encoding of a sequence of frames
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