Earticle

초록

영어

This paper presents the evaluation of two approaches, widely used in the inpainting literature, applied in the context of the atmospheric noise removal, such as fog, clouds - dense and sparse - and shadows, which often occur in remote sensing images. The presence of such elements aect, in many ways, the image processing in an environmental or urban monitoring, and also in the steps of the digital image processing, suchlike segmentation and classication. Whilst one approach uses a technique of interpolation for the dissemination of information by a multidimensional Discrete Cosine Transform (DCT) smoothing method, the other one is based on second-order partial dier- ential equations methods (PDE). This PDE-based development uses the heat diusion and thin-plate spline methods to achieve their solutions with the aid of the nite-dierence method. To proceed the methods evaluation, this work uses the kappa coecient and the Peak Signal-to-Noise Ratio index (PSNR). The metrics indicate the eectiveness of the DCT strategy, which produces higher quality images, specially when comparing the results obtained by the use of dierential equations modeled by thin-plate spline. The visual aspect of images is clearly an important factor for measuring the eectiveness of any image processing, so, in addition to numerical metrics, are presented the nine images used to evaluate both methods.

목차

Abstract
 1 Introduction
 2 Methodology
  2.1 First approach
  2.2 Second approach
 3 Results and Discussions
 4 Conclusion
 References

키워드

저자

• Ana Carolina Siravenha [ Signal Processing Laboratory, Federal University of Para (UFPA) ]
• Danilo Sousa [ Signal Processing Laboratory, Federal University of Para (UFPA) ]
• Aline Bispo [ Signal Processing Laboratory, Federal University of Para (UFPA) ]
• Evaldo Pelaes [ Signal Processing Laboratory, Federal University of Para (UFPA) ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Signal Processing, Image Processing and Pattern Recognition

• 간기

  격월간

• pISSN

  2005-4254

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605