Abstract:

This study takes the area surrounding Dongdao Island of the South China Sea as the study area, and uses a multi-band combination method to study the detection ability of water depth through WorldView-2 images. The single-band, dual-band, and multi-band models for water depth detection are built, and the detection ability and accuracy are evaluated. Results indicate that the multi-band model shows the best effect, the dual-band model the second, and the single-band model the last. For the single-band model, the depth detection ability order from the best to the worst is:green band, panchromatic band, blue band, and red band. The depth detection accuracy of the front view image is higher than that of the back view image. Panchromatic band plays an important role in water depth detection.

Key words: WorldView-2, remote sensing image, water depth detection, multi-band combination