Test Images

We use the Landsat Thematic Mapper (TM) raw satellite data for our test images. Each test image is a pixel subimage from a single TM band. Figure 8 shows a subimage from band 5, an image from South America, and Figure 9 is taken from band 4 of New Orleans data. These images have 256 grey levels and also have post-processing enhancement of the brightness for visualization purposes in this paper. We have applied SNF enhancement to these images, and the results appear below the original images. For the band 5 data, Figure 8 shows the results of the enhancement, with both the full image, and an enlargement of a structure in the river of this image. A further segmentation with using the -Connected Components algorithm is given at the bottom of Figures 8 and 9.