The present invention discloses a method for fine classification of dense mangroves in complex landforms by using unmanned aerial vehicles, which relates to the field of
image processing technology and comprises the following steps: S1, collecting unmanned aerial vehicle data of
mangrove ecological areas; S2, preprocessing the unmanned aerial vehicle data to obtain multispectral
raw data, panchromatic
raw data and
lidar raw data; S3, dividing the panchromatic raw data into sample sets; S4,
processing the multispectral raw data, the
lidar raw data and the output results of the
sample label acquisition unit to obtain classification features; S5,
processing the classification features to obtain an improved
mangrove fine classification feature group; S6,
processing the improved
mangrove fine classification feature group. In the present invention, the texture features are further improved by changing the dimension reduction method of the image, and the multispectral features,
lidar features and
vegetation index are combined for target recognition at the same time, thereby improving the accuracy of fine classification of dense mangroves in complex landforms.