Method and device for determining extraction model of green tide coverage ratio based on mixed pixels

A method for determining an extraction model of a green tide coverage ratio based on mixed pixels, comprising:

• acquiring sample truth values respectively corresponding to a plurality of target regions;
• wherein each target region contains water body and green tide, and each sample truth value is a truth value of the green tide coverage ratio in each target region;
• acquiring a plurality of first remote sensing data of a first satellite sensor;
• wherein the plurality of remote sensing data are in one-to-one correspondence with the plurality of target regions;
• determining reflection index sets respectively corresponding to the plurality of target regions according to the plurality of remote sensing data, wherein each reflection index set comprises a plurality of reflection indexes, and each reflection index is configured to represent an extracted value of the green tide coverage ratio in a pixel;
• and
• determining the extraction model of the green tide coverage ratio corresponding to the first satellite sensor according to the sample truth value corresponding to each of the plurality of target regions and the reflection index set corresponding to each of the plurality of target regions.