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Shifu Zhou

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Proceedings Article | 9 August 2023 Paper

Sparse signal recovery for multispectral demosaicking using pseudo-panchromatic image

Ronghao Liao, Shifu Zhou, Guangyuan Wu

Proceedings Volume 12782, 127820H (2023) https://doi.org/10.1117/12.3000913

KEYWORDS: Multispectral imaging, Tunable filters, Image filtering, Image analysis, Imaging systems, Image processing, Interpolation

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Single-sensor multispectral imaging technology has been widely used in computer vision, mechanical diagnosis, cultural history protection and other industries due to its convenience and low cost. Single-sensor multispectral imaging can only generate a single mosaic image, so an efficient method is needed to convert mosaic images into multispectral images. Based on the concept of pseudo-panchromatic image, a 9-band multispectral imaging system is designed in this paper. We directly estimate the pseudo-panchromatic image from the mosaic image and use the correlation between the pseudo panchromatic image and each channel to generate a multispectral image by guided filtering and residual interpolation. The experimental results show that the multispectral images obtained by our method are superior to the other two methods in objective and subjective evaluation.

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