1. A computer-implemented method for providing a fast index of imaged design data in an electronic design automation (EDA) application, comprising: receiving one or more input images with at least two dimensions; extracting two or more key features on the input images; determining an origin and two or more feature points on the key features on the input images; selecting a coordinate system to determine a position of each feature point in the input images, wherein the position of each feature point is determined by at least two parameters according to the dimensions of the input images; establishing a topological relationship in each dimension between the feature points on the key features; and utilizing the topological relationship in each dimension between the feature points to identify the input images in an image database, wherein the step of establishing a topological relationship in each dimension between the feature points on the key features comprises steps of calculating and sorting topological distances between each feature points and the origin to produce one or more sequences according to the dimension of the image, and the sequence at least includes a first sequence related to a first parameter between the origin and each feature points, and a second sequence related to a second parameter between the origin and each feature points in the input image, and wherein the sequence includes an angle sequence and a magnitude sequence in the two-dimensional image.