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- 江田 孝治
- 福岡大学
書誌事項
- タイトル別名
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- Creation Method of High-Definition Image using DCT Sign Index
- DCT フゴウ インデックス オ モチイタ コウセイサイ ガゾウ ノ サクセイホウ
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抄録
The purpose of this study is to propose a new creation method of high-resolution images using DCT. Images enlarged with image interpolation method blur due to the lack of high-frequency components. Super-resolution method is important in improving the sense of resolution of such images. In the proposed method, high-frequency components of images enlarged with bi-linear interpolation are restored to refine the enlarged images. Restoring high-frequency components is implemented by each focused block on the enlarged image. Since the high-frequency components of the focused blocks are lacked, they are searched from a database by means of DCT sign index. Here, the database is learned from multiple nature description images in advance. In addition, the DCT sign index used for search is generated from signs of DCT coefficient of the low-frequency components of the focused blocks. The proposed method made fast search of the database possible with the use of the DCT sign index. From many simulation results, the proposed method is proved effective.
収録刊行物
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- 電気学会論文誌C(電子・情報・システム部門誌)
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電気学会論文誌C(電子・情報・システム部門誌) 133 (3), 680-687, 2013
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390282679584692608
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- NII論文ID
- 10031155367
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- NII書誌ID
- AN10065950
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- ISSN
- 13488155
- 03854221
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- NDL書誌ID
- 024349204
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可