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DC Field | Value | Language |
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dc.contributor.author | Dhara, S K | - |
dc.contributor.author | Meher, S | - |
dc.date.accessioned | 2014-12-27T09:25:25Z | - |
dc.date.available | 2014-12-27T09:25:25Z | - |
dc.date.issued | 2014-12 | - |
dc.identifier.citation | 11th IEEE India Conference (INDICON-2014) Emerging Trends and Innovation in Technology, IEEE Pune Section, Pune, India, 11-13 Dec 2014. | en_US |
dc.identifier.uri | http://hdl.handle.net/2080/2227 | - |
dc.description | Copyright belongs to proceeding publisher | en_US |
dc.description.abstract | Generally, at the transmitter video intra frame is sub-sampled by resizing the frame. It is very important to generate good quality high resolution frame from the receiver low resolution frame. The existing most of all up-sampling technique produce undesirable blurring and ringing artefacts. To overcome this problem, a novel technique is proposed here which use both space and frequency domain information. The proposed method use low frequency DCT (Discrete cosine transform) component to sub-sample the frame or image at the transmitter side. In transmitter side a preprocessing method is proposed where the received sub-sampled frame or image is passed through a Wiener filter which uses its local statistics in 3×3 neighbourhood to modify pixel values. The output of Wiener filter is added with optimized multiple of high frequency component. The output is then passed through a DCT block to up-sample. Result shows that the proposed method outperforms most of the widely used existing interpolation techniques in terms of objective and subjective measures. | en_US |
dc.language.iso | en | en_US |
dc.subject | Discrete Cosine Transform | en_US |
dc.subject | Interpolation | en_US |
dc.subject | Local Variance | en_US |
dc.subject | Ringing Artifact | en_US |
dc.subject | Up-sampling | en_US |
dc.title | A Novel Hybrid Technique in Spatio-Frequecncy Domain for Better Quality Image and Video Up-Sampling | en_US |
dc.type | Article | en_US |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
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dhara_sk.pdf | 902.3 kB | Adobe PDF | View/Open |
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