Abstract: A system for modeling a roof structure comprising an aerial imagery database and a processor in communication with the aerial imagery database. The aerial imagery database stores a plurality of stereoscopic image pairs and the processor selects at least one stereoscopic image pair among the plurality of stereoscopic image pairs and related metadata from the aerial imagery database based on a geospatial region of interest. The processor identifies a target image and a reference image from the at least one stereoscopic pair and calculates a disparity value for each pixel of the identified target image to generate a disparity map. The processor generates a three dimensional point cloud based on the disparity map, the identified target image and the identified reference image. The processor optionally generates a texture map indicative of a three-dimensional representation of the roof structure based on the generated three dimensional point cloud.

Abstract: A method and system for an improved online auction is provided. The improved online auction fosters a win-win scenario and a sense of fairness between buyers and sellers, whereby the participants know the exact dollar cost to complete the auction process within a predictable timeframe. Auction participants know the entirety of their monetary investment in completing an auction—a registration fee. The present invention is adapted so that such participants can earn bidding units as a function of their skill in playing online games with other participants. Wherein, bidding units are used to buy the auctioned item, thereby fostering a non-dollar based competitive nature that attracts some users to auctions, yet maintaining a sense of level-field fairness so as to not repel other users.