ABOUT GRADIENT OPERATORS ON HYPERSPECTRAL IMAGES

Ramón Moreno, Manuel Graña

Abstract

Gradient operators allow image segmentation based on edge information. Gradient operators based on chromatic information may avoid apparent edges detection due to illumination effects. This paper proposes the extension of chromatic gradients defined for RGB color images to images with n-dimensional pixels. A spherical coordinate representation of the pixel's content provides the required chromatic information. The paper provides results showing that gradient operators defined on the spherical coordinate representation effectively avoid illumination induced false edge detection.

References

  1. Cheng, H., Jiang, X., Sun, Y., & Wang, J. (2001, Dec). Color image segmentation: advances and prospects. Pattern Recognition, 34(12), 2259-2281.
  2. Gonzalez, R. C., & Woods, R. E. (1992). Digital image processing (3rd ed.). Addison-Wesley Pub (Sd).
  3. Hildreth, E. C. (1987). Computations underlying the measurement of visual motion. In (pp. 99-146). Norwood, NJ, USA: Ablex Publishing Corp.
  4. Moreno, R., Graña, M., & d'Anjou, A. (2011). Illumination source chromaticity estimation based on spherical coordinates in rgb. Electronics Letters, 47(1), 28-30.
Download


Paper Citation


in Harvard Style

Moreno R. and Graña M. (2012). ABOUT GRADIENT OPERATORS ON HYPERSPECTRAL IMAGES . In Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 1: PRARSHIA, (ICPRAM 2012) ISBN 978-989-8425-98-0, pages 433-437. DOI: 10.5220/0003863904330437


in Bibtex Style

@conference{prarshia12,
author={Ramón Moreno and Manuel Graña},
title={ABOUT GRADIENT OPERATORS ON HYPERSPECTRAL IMAGES},
booktitle={Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 1: PRARSHIA, (ICPRAM 2012)},
year={2012},
pages={433-437},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003863904330437},
isbn={978-989-8425-98-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 1st International Conference on Pattern Recognition Applications and Methods - Volume 1: PRARSHIA, (ICPRAM 2012)
TI - ABOUT GRADIENT OPERATORS ON HYPERSPECTRAL IMAGES
SN - 978-989-8425-98-0
AU - Moreno R.
AU - Graña M.
PY - 2012
SP - 433
EP - 437
DO - 10.5220/0003863904330437