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Remote Sens. 2013, 5(12), 6539-6559; doi:10.3390/rs5126539
Article

Spatial Quality Assessment of Pan-Sharpened High Resolution Satellite Imagery Based on an Automatically Estimated Edge Based Metric

1,* , 1
 and 2
Received: 6 September 2013; in revised form: 23 September 2013 / Accepted: 19 October 2013 / Published: 3 December 2013
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Abstract: Most of the existing pan-sharpening quality assessment methods consider only the spectral quality and there are just few investigations, which concentrate on spatial characteristics. Spatial quality of pan-sharpened images is vital in elaborating the capability of object extraction, identification, or reconstruction, especially regarding man-made objects and their application for large scale mapping in urban areas. This paper presents an Edge based image Fusion Metric (EFM) for spatial quality evaluation of pan-sharpening in high resolution satellite imagery. Considering Modulation Transfer Function (MTF) as a precise measurement of edge response, MTFs of pan-sharpened images are assessed and compared to those obtained from the original multispectral or panchromatic images. Spatial quality assessment of pan-sharpening is done by comparison of MTF curves of the pan-sharpened and reference images. The capability of the proposed method is evaluated by quality assessment of two different residential and industrial urban areas of WorldView-2 pan-sharpened images. Obtained results clearly show the wide spatial discrepancy in quality of Pan-sharpened images, resulting from different fusion methods, and confirm the need for spatial quality assessment of fused products. The results also prove the capability of the proposed EFM as a powerful tool for evaluation and comparison of different image fusion techniques and products.
Keywords: fusion; pan-sharpening; high resolution satellite imagery; quality as assessment; edge-based fusion; pan-sharpening; high resolution satellite imagery; quality as assessment; edge-based
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Javan, F.D.; Samadzadegan, F.; Reinartz, P. Spatial Quality Assessment of Pan-Sharpened High Resolution Satellite Imagery Based on an Automatically Estimated Edge Based Metric. Remote Sens. 2013, 5, 6539-6559.

AMA Style

Javan FD, Samadzadegan F, Reinartz P. Spatial Quality Assessment of Pan-Sharpened High Resolution Satellite Imagery Based on an Automatically Estimated Edge Based Metric. Remote Sensing. 2013; 5(12):6539-6559.

Chicago/Turabian Style

Javan, Farzaneh D.; Samadzadegan, Farhad; Reinartz, Peter. 2013. "Spatial Quality Assessment of Pan-Sharpened High Resolution Satellite Imagery Based on an Automatically Estimated Edge Based Metric." Remote Sens. 5, no. 12: 6539-6559.


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