Title :
A new approach for the morphological segmentation of high-resolution satellite imagery
Author :
Pesaresi, Martino ; Benediktsson, Jon Atli
Author_Institution :
Space Applications Inst., Eur. Comm., Varese, Italy
fDate :
2/1/2001 12:00:00 AM
Abstract :
A new segmentation method based on the morphological characteristic of connected components in images is proposed. Theoretical definitions of morphological leveling and morphological spectrum are used in the formal definition of a morphological characteristic. In multiscale segmentation, this characteristic is formalized through the derivative of the morphological profile. Multiscale segmentation is particularly well suited for complex image scenes such as aerial or fine resolution satellite images, where very thin, enveloped and/or nested regions must be retained. The proposed method performs well in the presence of both low radiometric contrast and relatively low spatial resolution. Those factors may produce a textural effect, a border effect, and ambiguity in the object/background distinction. Segmentation examples for satellite images are given
Keywords :
geophysical signal processing; image resolution; image segmentation; mathematical morphology; aerial images; border effect; complex image scenes; connected components; enveloped regions; fine resolution satellite images; high-resolution satellite imagery; morphological leveling; morphological segmentation; morphological spectrum; multiscale segmentation; nested regions; object/background distinction; radiometric contrast; spatial resolution; textural effect; Filters; Image processing; Image resolution; Image segmentation; Layout; Morphology; Radiometry; Satellite broadcasting; Set theory; Spatial resolution;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on