Rice automatic mapping method based on ratio index of water body and vegetation index changes

摘要: The invention discloses a rice automatic mapping method based on ratio index of water body and vegetation changes. Based time-series data sets within the year index, detects fast-growing stage corresponding to maximum in each growth cycle pixel by pixel, establishes changes according change amplitude remote sensing from beginning vegetation, so as carry out mapping. makes full use characteristic that relative other crops natural is smaller, larger during period time transplanting heading paddy field, through design two for mapping, has characteristics good robustness, high classification accuracy, automation degree, strong anti-jamming capability like.