DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Park, Hyun-Wook | - |
dc.contributor.advisor | 박현욱 | - |
dc.contributor.author | Lim, Hyung-Jun | - |
dc.contributor.author | 임형준 | - |
dc.date.accessioned | 2011-12-14T02:07:06Z | - |
dc.date.available | 2011-12-14T02:07:06Z | - |
dc.date.issued | 2008 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=302000&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/38659 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2008. 8., [ vi, 34p ] | - |
dc.description.abstract | This thesis proposes an algorithm to reduce ringing artifacts caused by image resizing process in block-DCT domain. Ringing artifact is reduced by the proposed frequency domain filtering and spatial domain post-processing. While the previous ringing removal filters have to find a compromise between blurring and ringing artifacts, the proposed Algorithm introduces no further blurring and reduces the ringing artifacts. But new annoyance appears near the strong edges due to the amplified overshoot. The proposed method detects overshot regions and constructs a mask map indicating the degree of overshoot. Based on the mask map, the ringing artifacts can be reduced by combining the filtered image and unfiltered image in image domain. Experimental results demonstrate that the proposed algorithm achieves better subjective quality than the previous ringing reduction approach with little degradation of PSNR. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Block-DCT | - |
dc.subject | Image Resizing | - |
dc.subject | Ringing Reduction | - |
dc.subject | 블록 기반의 DCT | - |
dc.subject | 이미지 크기변환 | - |
dc.subject | 링잉 현상 제거 | - |
dc.subject | Block-DCT | - |
dc.subject | Image Resizing | - |
dc.subject | Ringing Reduction | - |
dc.subject | 블록 기반의 DCT | - |
dc.subject | 이미지 크기변환 | - |
dc.subject | 링잉 현상 제거 | - |
dc.title | Ringing artifact reduction for images resized in Block-DCT domain | - |
dc.title.alternative | 블록 기반의 DCT 영역에서 크기가 변화된 이미지의 Ringing 현상 제거 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 302000/325007 | - |
dc.description.department | 한국과학기술원 : 전기및전자공학전공, | - |
dc.identifier.uid | 020073476 | - |
dc.contributor.localauthor | Park, Hyun-Wook | - |
dc.contributor.localauthor | 박현욱 | - |
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