[GIS] Help with gap mask filling and Landsat 7 in ArcGIS 10

Question

I have downloaded images from Landsat 7 ETM+ SLC-off with corresponding gap mask. Which is the best method for using it with ArcGIS 10?

I tried the mask and statistical method described in ArcGIS help but I have some troubles, (after I apply the mask function, the statistical function need the input raster that is somewhere in a temporary file that can't access it.)

Answer 1

For some alternatives to ArcGIS, the USGS offers several solutions to deal with the Landsat 7 ETM+ gaps.

• Filling the Gaps to use in Scientific Analysis
• Filling the Gaps for Display

Additionally, GRASS provides functionality that may be of interest to you, including:

• r.patch

Creates a composite raster map layer by using known category values from one (or more) map layer(s) to fill in areas of "no data" in another map layer.

• r.fillnulls

Fills no-data areas in raster maps using spline interpolation.

For a QGIS/GDAL solution, use gdal_fillnodata which is available in QGIS at: Raster > Analysis > Fill nodata

Fill raster regions by interpolation from edges