Loading...
Please wait, while we are loading the content...
Similar Documents
Multi-Task Collaboration Deep Learning Framework for Infrared Precipitation Estimation
Content Provider | MDPI |
---|---|
Author | Yang, Xuying Sun, Peng Zhang, Feng Du, Zhenhong Liu, Renyi |
Copyright Year | 2021 |
Description | Infrared observation is an all-weather, real-time, large-scale precipitation observation method with high spatio-temporal resolution. A high-precision deep learning algorithm of infrared precipitation estimation can provide powerful data support for precipitation nowcasting and other hydrological studies with high timeliness requirements. The “classification-estimation” two-stage framework is widely used for balancing the data distribution in precipitation estimation algorithms, but still has the error accumulation issue due to its simple series-wound combination mode. In this paper, we propose a multi-task collaboration framework (MTCF), i.e., a novel combination mode of the classification and estimation model, which alleviates the error accumulation and retains the ability to improve the data balance. Specifically, we design a novel positive information feedback loop composed of a consistency constraint mechanism, which largely improves the information abundance and the prediction accuracy of the classification branch, and a cross-branch interaction module (CBIM), which realizes the soft feature transformation between branches via the soft spatial attention mechanism. In addition, we also model and analyze the importance of the input infrared bands, which lay a foundation for further optimizing the input and improving the generalization of the model on other infrared data. Extensive experiments based on Himawari-8 demonstrate that compared with the baseline model, our MTCF obtains a significant improvement by 3.2%, 3.71%, 5.13%, 4.04% in F1-score when the precipitation intensity is 0.5, 2, 5, 10 mm/h, respectively. Moreover, it also has a satisfactory performance in identifying precipitation spatial distribution details and small-scale precipitation, and strong stability to the extreme-precipitation of typhoons. |
Starting Page | 2310 |
e-ISSN | 20724292 |
DOI | 10.3390/rs13122310 |
Journal | Remote Sensing |
Issue Number | 12 |
Volume Number | 13 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-06-12 |
Access Restriction | Open |
Subject Keyword | Remote Sensing Imaging Science Precipitation Estimation Infrared Deep Learning Multi-task Learning |
Content Type | Text |
Resource Type | Article |