| Abstract: | Enhanced false color images from mid-IR, near-IR (NIR), and visible bands of the Landsat thematic mapper (TM) are commonly used for visually interpreting land cover type. Described here is a technique for sharpening or fusion of NIR with higher resolution panchromatic (Pan) that uses a shift-invariant implementation of the discrete wavelet transform (SIDWT) and a reported pixel-based selection rule to combine coefficients. There can be contrast reversals (e.g., at soil-vegetation boundaries between NIR and visible band images) and consequently degraded sharpening and edge artifacts. To improve performance for these conditions, I used a local area-based correlation technique originally reported for comparing image-pyramid-derived edges for the adaptive processing of wavelet-derived edge data. Also, using the redundant data of the SIDWT improves edge data generation. There is additional improvement because sharpened subband imagery is used with the edge-correlation process. A reported technique for sharpening three-band spectral imagery used forward and inverse intensity, hue, and saturation transforms and wavelet-based sharpening of intensity. This technique had limitations with opposite contrast data, and in this study sharpening was applied to single-band multispectral-Pan image pairs. Sharpening used simulated 30-m NIR imagery produced by degrading the spatial resolution of a higher resolution reference. Performance, evaluated by comparison between sharpened and reference image, was improved when sharpened subband data were used with the edge correlation. |
| Genre: | Conference Paper |
| ProdID: | 70025025 |
| Citation Author: | Lemeshewsky, G. P. |
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| Citation Editor: | Rahman Z.-USchowengerdt R.A.Reichenbach S.E. |
| Citation End Page: | 200 |
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| Citation Language: | English |
| Citation Larger Work Title: | Proceedings of SPIE - The International Society for Optical Engineering |
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| Citation Number Of Pages: | 12 |
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| Citation Search Results Text: | Multispectral image sharpening using a shift-invariant wavelet transform and adaptive processing of multiresolution edges; 2002; Conference Paper; Proceedings of SPIE - The International Society for Optical Engineering; Lemeshewsky, G. P. |
| Citation Start Page: | 189 |
| Citation Volume: | 4736 |
| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | Multispectral image sharpening using a shift-invariant wavelet transform and adaptive processing of multiresolution edges; 2002; Conference Paper; Proceedings of SPIE - The International Society for Optical Engineering; Lemeshewsky, G. P. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1117/12.477580 |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
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