METHOD FOR THEMATIC IMAGE DECODING AND DEVICE WHICH IMPLEMENTS SAID METHOD Russian patent published in 1997 - IPC

FIELD: image recognition. SUBSTANCE: method involves preliminary generation of a priori list of possible values of morphological characteristics for given class of objects, selection of sheet of digital map of given region, reading real morphological characteristics from this map and comparison of them to values from list. Result of comparison is stored in point of binary digital map which is generated from coordinates of source digital map and depends on its corresponding sheet. All picture elements are filtered by means of setting them to zero if corresponding bit in binary map is equal to zero. Picture elements that have been processed in this way are joined in resulted digital picture which is shown on display for visual decoding objects of given class by operator. EFFECT: decreased time for decoding, decreased probability of false alarm. 2 cl, 6 dwg