Abstract
Mixed pixel decomposition is the most effective method to solve the mixed pixel problem, which can break through the limitation of spatial resolution, obtain the property information to the sub pixel precision and improve the classification precision. How to analysis mixed pixel and extract the end members become one of the key problems in image processing. Due to the large search range for the end members, the efficiency of the traditional algorithm is usually low, a improved N-FINDR algorithm is put forward by simplifies the procedure by finding the points set that can form a triangle with the maximum area. In order to prove the effectiveness of improved method, through strictly quantitative analysis and compared with other classical method. The experimental results show that the method can effectively improve the accuracy of end member extraction and achieve better results. Under the same conditions, the improved N-FINDR algorithm has a higher overall efficiency and faster computation velocity.
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