專利國別

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發表日期

2014-06-06 11:21:58

本校案號

P98001A

專利名稱

低計算複雜度之資料反轉換與次取樣的方法「LOW-COMPLEXITY INVERSE TRANSFORM AND SUB-SAMPLING」

發明人

陳自強

所屬院

工學院

提案單位

電機工程學系暨研究所

類型

發明

專利權人

國立中正大學

申請號

12/688,076

申請日期

2010-01-15

公開號

US 2011-0058603 A1

公開日期

2011-03-10

證書號

US 8,559,500 B2

核准日期

2013-10-15

國際分類號

H04N-007/12(2006.01)；H04N-011/02(2006.01)；H04N-011/04(2006.01)；G06K-009/46(2006.01)；G06K-009/36(2006.01)

專利權期間

2010.01.15~2030.01.15(延長545天至2031.07.14)

專利摘要

Disclosed is a method of inverse transform and sub-sampling having low computational complexity, wherein, a complicated inverse transform process is simplified, meanwhile, a sub-sampling is performed, in particular said simplified process is provided with a compensation scheme, and that is utilized to solve a distortion problem as incurred by said simplified process. This method can be utilized in a video or image codec, for an inverse transform and a sub-sampling from a frequency domain to a spatial domain, thus reducing computational complexity of a frame-size reduction transform, and increasing decoding speed. Said method is applicable in equal and unequal reduction ratios of a frame length and width.

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