Matches in SemOpenAlex for { <https://semopenalex.org/work/W2088470515> ?p ?o ?g. }
Showing items 1 to 81 of
81
with 100 items per page.
- W2088470515 endingPage "34" @default.
- W2088470515 startingPage "27" @default.
- W2088470515 abstract "본 논문에서는 영상의 명암대비(contrast)를 개선시키는 언샾 마스킹 방법을 제안한다. 언샾 마스킹은 이미지가 가지고 있는 에지와 디테일 정보를 개선시키는데 일반적인 샤프닝 마스크 보다 효과적이기에 이에 관한 많은 연구가 있었다. 제안하는 방법은 방향성 정보를 이용한 블록 단위의 언샾 마스킹 방법으로 영상을 블록 단위로 분할하고 DCT(Discrete Cosine Transform)를 이용하여 각 블록에서 패턴의 방향성 정보를 얻어낸다. DCT 결과로부터 해당 블록들의 방향성 타입을 결정하고 이에 따라 언샾 마스크를 적응적으로 적용한다. 블록의 분류는 평탄영역, 텍스처, 에지 그리고 나머지 형태로 구분되어 진다. 평탄 영역에 속하는 블록은 잡음에 의한 영향을 줄이기 위해 언샾 마스킹을 적용하지 않으며 텍스처와 에지영역에 대해서는 고주파 성분을 강조하기 위해 블록타입에 맞는 적응적 언샾 마스킹을 적용한다. 실험을 통하여 영상에서 평탄 영역은 잡음에 의한 훼손을 줄이며 에지들이 포함된 텍스처 영역은 적응적으로 강조하여 시각적으로 우수한 명암대비 개선 결과를 얻을 수 있었다. In this paper, the novel approach for image contrast enhancement is introduced. The method is based on the unsharp mask and directional information of images. Since the unsharp mask techniques give better visual quality than the conventional sharpening mask, there are much works on image enhancement using unsharp masks. The proposed algorithm decomposes the image to several blocks and extracts directional information using DCT. From the geometric properties of the block, each block is labeled as appropriate type and processed by adaptive unsharp mask. The masking process is skipped at the flat area to reduce the noise artifact, but at the texture and edge area, the adaptive unsharp mask is applied to enhance the image contrast based on the edge direction. Experiments show that the proposed algorithm produces the contrast enhanced images with superior visual quality, suppressing the noise effects and enhancing edge at the same time." @default.
- W2088470515 created "2016-06-24" @default.
- W2088470515 creator A5030385166 @default.
- W2088470515 date "2011-03-31" @default.
- W2088470515 modified "2023-09-26" @default.
- W2088470515 title "Image Contrast Enhancement using Adaptive Unsharp Mask and Directional Information" @default.
- W2088470515 cites W1965301406 @default.
- W2088470515 cites W2114926173 @default.
- W2088470515 cites W2165187704 @default.
- W2088470515 cites W2166538457 @default.
- W2088470515 cites W3029645440 @default.
- W2088470515 doi "https://doi.org/10.9708/jksci.2011.16.3.027" @default.
- W2088470515 hasPublicationYear "2011" @default.
- W2088470515 type Work @default.
- W2088470515 sameAs 2088470515 @default.
- W2088470515 citedByCount "1" @default.
- W2088470515 countsByYear W20884705152012 @default.
- W2088470515 crossrefType "journal-article" @default.
- W2088470515 hasAuthorship W2088470515A5030385166 @default.
- W2088470515 hasBestOaLocation W20884705151 @default.
- W2088470515 hasConcept C115961682 @default.
- W2088470515 hasConcept C126838900 @default.
- W2088470515 hasConcept C143409427 @default.
- W2088470515 hasConcept C154945302 @default.
- W2088470515 hasConcept C162307627 @default.
- W2088470515 hasConcept C2221639 @default.
- W2088470515 hasConcept C2524010 @default.
- W2088470515 hasConcept C2776502983 @default.
- W2088470515 hasConcept C2777210771 @default.
- W2088470515 hasConcept C2781137444 @default.
- W2088470515 hasConcept C30108884 @default.
- W2088470515 hasConcept C3017601658 @default.
- W2088470515 hasConcept C3018181011 @default.
- W2088470515 hasConcept C31972630 @default.
- W2088470515 hasConcept C33923547 @default.
- W2088470515 hasConcept C41008148 @default.
- W2088470515 hasConcept C55020928 @default.
- W2088470515 hasConcept C71924100 @default.
- W2088470515 hasConcept C79052406 @default.
- W2088470515 hasConcept C99498987 @default.
- W2088470515 hasConceptScore W2088470515C115961682 @default.
- W2088470515 hasConceptScore W2088470515C126838900 @default.
- W2088470515 hasConceptScore W2088470515C143409427 @default.
- W2088470515 hasConceptScore W2088470515C154945302 @default.
- W2088470515 hasConceptScore W2088470515C162307627 @default.
- W2088470515 hasConceptScore W2088470515C2221639 @default.
- W2088470515 hasConceptScore W2088470515C2524010 @default.
- W2088470515 hasConceptScore W2088470515C2776502983 @default.
- W2088470515 hasConceptScore W2088470515C2777210771 @default.
- W2088470515 hasConceptScore W2088470515C2781137444 @default.
- W2088470515 hasConceptScore W2088470515C30108884 @default.
- W2088470515 hasConceptScore W2088470515C3017601658 @default.
- W2088470515 hasConceptScore W2088470515C3018181011 @default.
- W2088470515 hasConceptScore W2088470515C31972630 @default.
- W2088470515 hasConceptScore W2088470515C33923547 @default.
- W2088470515 hasConceptScore W2088470515C41008148 @default.
- W2088470515 hasConceptScore W2088470515C55020928 @default.
- W2088470515 hasConceptScore W2088470515C71924100 @default.
- W2088470515 hasConceptScore W2088470515C79052406 @default.
- W2088470515 hasConceptScore W2088470515C99498987 @default.
- W2088470515 hasIssue "3" @default.
- W2088470515 hasLocation W20884705151 @default.
- W2088470515 hasOpenAccess W2088470515 @default.
- W2088470515 hasPrimaryLocation W20884705151 @default.
- W2088470515 hasRelatedWork W1991633490 @default.
- W2088470515 hasRelatedWork W2040135011 @default.
- W2088470515 hasRelatedWork W2088470515 @default.
- W2088470515 hasRelatedWork W2144870453 @default.
- W2088470515 hasRelatedWork W2166538457 @default.
- W2088470515 hasRelatedWork W2181559900 @default.
- W2088470515 hasRelatedWork W2357050377 @default.
- W2088470515 hasRelatedWork W2369361686 @default.
- W2088470515 hasRelatedWork W1572725906 @default.
- W2088470515 hasRelatedWork W2187862695 @default.
- W2088470515 hasVolume "16" @default.
- W2088470515 isParatext "false" @default.
- W2088470515 isRetracted "false" @default.
- W2088470515 magId "2088470515" @default.
- W2088470515 workType "article" @default.