Method and apparatus for obtaining multi-spectral signatures

Details Method and apparatus for obtaining multi-spectral signatures Method and apparatus for obtaining multi-spectral signatures

G - Physics

06

K

354/221

G06K 9/00 (2006.01) G06K 9/62 (2006.01) G06T 5/00 (2006.01)

Patent

CA 1096504

P-308 ABSTRACT OF THE DISCLOSURE A multispectral data classification system has an improved method and apparatus for the identification of train- ing samples of multispectral image data useful in the computa- tion of spectral signatures. The method involves displaying a set of multispectral image data on a user-interactive device in a two-dimensional ordered array. The training sample is defined by the sequential definition of the vertices of a polygon representing the train- ing sample. A rectangle is closely superscribed about the polygon. The data elements within the rectangle are examined to determine if they are within the polygon. The apparatus includes a multispectral data classifica- tion system incorporating a color, CRT display for displaying the set of data; a manually-operable trackball cursor inter- active with the color, CRT display for defining the polygon and rectangle; an alphanumeric keyboard and monochrome CRT for providing communication between the operator and system; and a random access memory device.

277836

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