Segmentation is a simple type of classification algorithm, and can be useful in classifying certain types of images into larger ground feature categories, such as land, cloud, water, or snow.

You can use the SDO_GEOR_RA.classify procedure to apply thresholding to images. Thresholding is the simplest segmentation, which classifies an image into two categories by using a single cell value as the threshold. The resulting image has only two values and can be cast into a binary bitmap mask directly in the same process.

You can also apply more image segmentation operations using the SDO_GEOR_RA.classify procedure, by first applying arithmetic operations on multiple bands and then classifying the results into a number of categories.

For examples of using the SDO_GEOR_RA.classify procedure, see Classification Operations.