Dr. Xinping Wang Profile

Dr. Xinping Wang

at Innovation Academy for Microsatellites of CAS

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 24 May 2023 Paper

Chlorophyll-a concentration inversion and distribution with GOCI images in the Changjiang Estuary

Dinghui shang, Chengcheng Fan, Yonghe Zhang, Xinping Wang

Proceedings Volume 12706, 127060S (2023) https://doi.org/10.1117/12.2682817

KEYWORDS: Reflectivity, Satellites, Water, Satellite imaging, Data modeling, Mathematical optimization, Earth observing sensors, Turbidity

Read Abstract +

Chlorophyll-a concentration, as a direct indicator of phytoplankton abundance, is important in the study of marine ecological environment and ecosystem's substance circulation and energy exchanges. This paper investigates the distribution of chlorophyll-a over time and space in the Changjiang Estuary through combining in-situ observation during scientific cruises and Geostationary Ocean Color Imager (GOCI) satellite images. The field measured spectral reflectance curves show significant differences from the near-estuarine region to the offshore region, including features such as peak and trough locations, slope variations, and spectral symmetry. Several popular inversion algorithms of chlorophyll-a concentration are optimized and compared using the training dataset, in which the generalized algal bloom index algorithm (GABI) gets a better accuracy and stability. Monthly average distribution maps derived from GOCI images show that chlorophyll-a concentration in the Changjiang Estuary and adjacent areas is always low (≤3 mg/m3 ) in winter, and slightly higher near the estuarine. In spring and summer, the chlorophyll-a concentration rises gradually due to the increasing water temperature, especially in areas east of the maximum turbidity zone. Moreover, chlorophyll-a concentration is relatively higher in the sea adjacent to the southeast of Zhoushan Islands in autumn.

Proceedings Article | 12 March 2021 Paper

Intelligent ship detection method based on spatial-spectrum features

Chengcheng Fan, Yonghe Zhang, Xinping Wang, Dinghui Shang, Yukun Sun

Proceedings Volume 11763, 117631V (2021) https://doi.org/10.1117/12.2586307

Read Abstract +

The hyperspectral remote sensing earth observation technology provides an important way for marine ship detection and identification. In order to solve the problem that the conventional detection and recognition methods mainly use single information source, and the reliability and accuracy can not be effectively improved, this paper proposes an intelligent detection method based on spatial spectrum features. Firstly, for hyperspectral single band images, the lightweight deep learning convolution model is used for target detection and recognition. From the perspective of spectral physical characteristics, the method of combining spectral anomaly detection and matching detection is used for target detection and recognition. Finally, the detection results of the two approaches are fused and screened to achieve intelligent detection and discovery. The experimental results show that based on the model and processing method designed in this paper, the detection rate of sea scene is better than 93.5%, the detection rate of port scene is better than 85.5%, and the false alarm rate is less than 40%, which can effectively ensure the intelligent monitoring and management of ships.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years