User Manual - pancroma

It is also apparent that the grayscale tones differ significantly between the twotones. I used the TERAS utility to synthesize data into the first image usinginformation in the second. The result is shown below. Note that TERAS hasmatched the grayscale tones for the filled pixels very closely, despite the majordifferences between the two images. The gaps are not completely eliminatedbecause there was some gap overlap between the two images. However thegaps are significantly smaller in the product image. Repeating this processperhaps one more time with a third SLC-Off Landsat scene would probablyproduce an acceptable image.The advantage of using SLC-Off images for gap filling is temporal similarity, i.e.the images are typically acquired much closer together in time than pre-2003SLC-On data. Although this result was produced with TERAS, the Transfer andHayes can also be used similarly.342