By combining random sampling,systematic sampling and stratified sampling,three new spatial sampling schemes were designed for crop area estimation based on the technologies of Geographic Information System,Remote Sensing and Global Positioning System.

This paper introduced the methodology of early rice planted area estimation by integration of GIS and TM data.

Remote Sensing Method of Pure Crop Pixel Identification & Planting Area Estimation Based on Spectral Library;

At first, we reviewed and analyzed the development and questions of the 3S technology in crop acreage estimation, and then we introduced the principle and advantage of geometric correction using the GPS data, mainly on unsupervised classification, t.

Utilizing the computer vision techniques,this paper proposes an approach for the volume estimation of the particles by applying the BP neural network based on the 2-D image information of single view(perimeter、area、elongation etc).

The estimation precision of analytical methods for logic circuits using information theory was improved using a new area estimation model with transition information entropy.

The issue discussed in this paper was about how to improve the area estimation precision in an AFI year by configuring a three-phase sampling framework which takes good use of the relationship between remotely sens.