Least Square based Multi-spectral Color Interpolation Algorithm for RGB-NIR Image Sensors

Ji Yong Kwon, Chul Hee Park, Moon Gi Kang

2015

Abstract

The use of near-infrared (NIR) band gives us additional invisible information to discriminate objects and enables us to recognize objects more clearly under low light conditions. To acquire color and NIR bands together in a single image sensor developed from a conventional color filter array (CFA), we use a multispectral filter array (MSFA) in the RGB-NIR sensors and design a color interpolation algorithm to fill the information about the multi-spectral (MS) bands from the subsampled MSFA image. Aliasing in the MSFA image caused by the subsampled bands is minimized by balancing the energy of the bands. A panchromatic (PAN) image is generated by filtering the low-pass kernel to the MSFA image. This PAN image without chrominance signals, which contains the most high-frequency in the MSFA image, is used to reconstruct the MS images by solving the least square cost function between the PAN and MS images. The experiments show that the proposed algorithm estimates the high-resolution MS images very well.

Paper Citation

in Harvard Style

Kwon J., Park C. and Kang M. (2015). Least Square based Multi-spectral Color Interpolation Algorithm for RGB-NIR Image Sensors . In Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2015) ISBN 978-989-758-089-5, pages 38-45. DOI: 10.5220/0005265000380045

in Bibtex Style

@conference{visapp15,
author={Ji Yong Kwon and Chul Hee Park and Moon Gi Kang},
title={Least Square based Multi-spectral Color Interpolation Algorithm for RGB-NIR Image Sensors},
booktitle={Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2015)},
year={2015},
pages={38-45},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005265000380045},
isbn={978-989-758-089-5},
}

in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2015)
TI - Least Square based Multi-spectral Color Interpolation Algorithm for RGB-NIR Image Sensors
SN - 978-989-758-089-5
AU - Kwon J.
AU - Park C.
AU - Kang M.
PY - 2015
SP - 38
EP - 45
DO - 10.5220/0005265000380045