書誌事項
- タイトル別名
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- Evaluation of JPEG Blockiness by the Fast Analysis of Information on Local Image Frequency
- キョクショテキ シュウハスウ コウゾウ ノ コウソク カイセキ ニ モトズク JPEG ブロックノイズ ヒョウカホウ
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抄録
In this paper, we propose a method for estimating the JPEG blockiness in a given image. The most advanced method in this research area is the method that is based on the analysis of gradient information obtained for three types of image regions; the region inside of the block, the region at the boundary of the block, and the region over entire image. The method can be used to detect the blockiness and to calculate the image quality measure accurately. However, the correlation between the calculated measure and the subjective estimation by humans is not very high. Therefore, we propose a method for estimating the blockiness in the image by examining the relationship between the frequency structures of the pixels inside and on the boundary of the JPEG block. For analyzing the frequency, we used the co-occurrence histogram because it provides some useful information on the frequency structure. Experimental results have proved that the coefficient obtained in correlation of our method is greater than that obtained in the conventional method and a subjective evaluation by approximately 0.04.
収録刊行物
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- 電気学会論文誌Ｄ（産業応用部門誌）
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電気学会論文誌Ｄ（産業応用部門誌） 131 (4), 600-607, 2011
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
- 1390282679635202048
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- NII論文ID
- 10027980668
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- NII書誌ID
- AN10012320
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- ISSN
- 13488163
- 09136339
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- NDL書誌ID
- 11064741
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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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- 抄録ライセンスフラグ
- 使用不可