With the development of earth observation techniques
a large number of high-resolution remote sensing images can now be acquired by using different types of sensors. Handling these "big" remote sensing data with diverse characteristics is difficult when traditional remote sensing techniques are used. New challenges
such as high-dimensional datasets(high spatial and hyperspectral features)
complex structures(nonlinear and overlapped distribution)
and optimization problems(high computational complexity)
have also emerged. To address these problems
evolutionary computing-based techniques based on biological systems have been widely used for remote sensing image processing. Such techniques possess the following advantages:(1) powerful global optimization capability
acquiring the optimal or nearly optimal solution of objective functions;(2) self-organizing and self-learning capability
learning from original remote sensing data autonomously; and(3) capability of handling multi-objective problem
optimizing the multiple objective function simultaneously because of its population-based characteristics. Evolutionary computing has achieved preliminary success in the field of remote sensing data processing.In this paper
the applications of evolutionary computing to the fields of remote sensing image processing are reviewed
along with feature representation and feature selection
classification and clustering
and sub-pixel-level processing techniques
such as endmember extraction
hyperspectral unmixing
and sub-pixel mapping. Compared with the traditional methods of remote sensing image processing
these new methods are thought to be intelligent and accurate because of their powerful global optimization. For example
their constraints on the characteristics of objective functions
such as their derivatives
are few. They can also generate few assumptions about remote sensing data because of their self-organizing and self-learning capabilities. They can consider a large number of objective functions because of their capability of handling multi-objective problems. In summary
these new methods exhibit intelligent characteristics and high accuracy in remote sensing image processing. Finally
several crucial issues and research directions in the use of evolutionary computing are highlighted:(1)multi-objective optimization for regularization-based ill-posed problems in remote sensing processing
such as hyperspectral unmixing;(2)the discussion on the efficiency of evolutionary computing-based remote sensing processing methods
such as the memetic algorithm
which is a hybrid of evolutionary computing and machine learning
and the speeding up techniques of evolutionary computing-based remote sensing processing methods.