Topic 1: Digital Image Processing
Image acquisition
Image processing
Medical image processing
Pattern recognition and analysis
Visualization
Image Encoding and Compression
Super-resolution imaging
Image Segmentation
Face recognition
3D and surface reconstruction
Literature analysis
Radar image processing
Sonar Image Processing 
Signal reconstruction
Noise control
Fast algorithm 
Fast fourier transform 
Wavelet transform
Optical signal processing
Data Mining Technology
Motion detection
Content based image retrieval
Video signal processing
Watermark
Detection and estimation of signal parameters
Multiple filters and filter groups
Adaptive clustering algorithm
Discrete Cosine Transform
Discrete Hilbert Transform
Array signal processing
Digital signal processing 
Statistical signal processing
Adaptive signal processing
Multidimensional signal processing
Mobile signal processing
Real time signal processing
Higher-order statistical analysis
Analysis of cyclostationary signals
Neural networks used for signal processing
Applications in the telecommunications industry
The Application of Fuzzy Logic in Signal Processing
Signal recognition
Nonlinear Signals and Systems
Time frequency signal analysis
Spectral analysis
Filter design and structure
FIR filter
Iir filters 
Adaptive filter
Multi channel filtering
Topic 2: Environmental Remote Sensing
Remote sensing of atmospheric environment
Remote sensing of land environment
Remote sensing of water environment
Vegetation Ecological Remote Sensing
Environmental remote sensing technology
Modeling and monitoring of agriculture and natural ecosystems
Environmental monitoring
Emergency remote sensing monitoring of environmental disasters
Remote sensing information extraction
Geographic Information System
Remote sensing data fusion
Remote sensing big data
Topic Three: Earth Science
Atmospheric science
Atmospheric Physics
Atmospheric Chemistry
Atmospheric Environment Science
Atmospheric detection
Atmospheric Remote Sensing
Dynamic meteorology
Weather Science
Climatology
Atmospheric boundary layer physics
Physics of Clouds and Precipitation
Applied Meteorology
Gravity of the earth
Geology
Geodynamics
Geophysics
Geochemistry
Space Environment Studies, etc