A NEW VARIATIONAL METHOD FOR PAN-SHARPENING

作者：Liu Pengfei^*; Xiao Liang; Tang Songze

来源：IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015-07-26 to 2015-07-31.

• pan-sharpening
• variational method
• differential surface
• bending direction

In this paper, we present a new variational method for pan sharpening, which aims to obtain a high resolution multi spectral (MS) image from a low resolution MS image and a high resolution panchromatic (PAN) image. Firstly, we assume that the desired high resolution MS image after down sampling should be close to the low resolution MS image. More specifically, the intensity maps of PAN image and high resolution MS image bands are treated as three-dimensional (3D) differential surfaces. Then, we constrain that the surfaces of PAN image and high resolution MS image band should have the same bending directions at each point in 3D space. Based on these assumptions, a variational model is proposed and an efficient algorithm is designed to solve this variational model. Experimental results demonstrate that the proposed method outperforms various pan-sharpening methods in terms of both excellent spatial and spectral qualities.

• 出版日期2015
• 单位南京大学