Image Resizing with Enhancement Technique on DCT Domain
T. Romen Singh1, O. Imocha Singh2
1Dr. T. Romen Singh, Department of Computer Science, Manipur University, Canchipur, Imphal, Manipur, India.
2O. Imocha Singh, Department of Computer Science, Manipur University, Canchipur, Imphal, Manipur, India.
Manuscript received on 20 September 2015 | Revised Manuscript received on 30 September 2015 | Manuscript published on 30 September 2015 | PP: 40-45 | Volume-4 Issue-4, September 2015 | Retrieval Number: D1482094415©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This paper presents an image resizing technique with enhancement process so as to get an enhanced resized image. This technique is applied on single DCT domain and it is based on the energy compaction and de-correlation property of DCT. Resizing is based on energy compaction while enhancement is based on de-correlation property of CDT. In this technique, resizing is implemented on arbitrary ratio of dimension of the resized image. Enhancement technique is applied by rescaling the AC and DC values of the DCT matrix of the input image. Since it is applied on single DCT domain there is no blocking artefact like block domain. The performance of this technique is compared with other related techniques using PSNR, RMSE and CCC and found outperform.
Keyword: Image Resizing, Arbitrary Ratio, DCT, Enhancement, Power-Law.
Scope of the Article: Image analysis and Processing