Accurate Calculation Approach for Auto-Estimation on Anisotropic and Sporadic Small Area

This paper proposes a statistical estimation approach for the sporadic especially antitropic shapes of the source picture. In the field of GIS, the application such as the estimation of the green coverage rate in established districts will need the aid of the area estimation approach. Series of statistical estimation approaches have been put forward for different geographical regions, such as mountainous, open, and forested areas. However, no effective method has been found to function well on sporadic and antitropic regions.In this condition, the error brought out by the border of the sporadic and antitropic regions cannot be neglected,or the accumulation of these errors will come to be considerable. We propose an approach which will bring out no error in the calculation process. Our approach includes the two parts-shape dividing and area integral.The time cost of the shape dividing algorism is lower than the existing algorism in our condition. The adaptation of the integral approach based on the result of the shape dividing algorism can guarantee the accuracy of the statistical estimation result.