Detecting moving vehicles and people is crucial for safe operation of UGVs but is challenging in cluttered, real world environments. We propose a registration technique that enables objects to be robustly matched and tracked, and hence movers to be detected even in high clutter. Range data are acquired using a 2D scanning Ladar from a moving platform. These are automatically clustered into obje...

We present our work on novel digitizing techniques to create virtual exhibitions in the context of the Gold Museum in Bogotá, Colombia, a world renown space for precious pre-Colombian gold artifacts. In order to solve issues related to high specular reflection in gold artifacts, we developed a multi-spectral approach that solves some of the shortfalls of many commercial scanners. We also integr...

Paper presents procedures and experiences on using low cost desktop scanner Epson Expression 1640XL for orthophoto production. Complete process of scanning, scanner calibration and removal of systematic distortions of scanned images caused by scanner is developed and tested on several large projects of orthophoto production. Special, user-friendly software is developed for these purposes. The s...

This paper describes an efficient method for Urdu text search in computer generated and handwritten scanned images. An efficient text search technology is necessary because of increasing handled document every day. This method is unique and simple in the sense that no features are extracted. The proposed method is script independent. The input image is directly matched with a set of prototype c...

Optical mark-sense scanning has lead to a resurgence in the use of paper ballots in the United States, despite a century of strong competition from paperless direct-recording voting systems. By the time mark-sense technology emerged, procedural measures had been developed to counter most of the vulnerabilities of paper ballots. Automatic counting of paper ballots poses technical and legal probl...

In this paper, we prenent a method lo obtain the 3D sfinpc of on unJolded curved b o k surficc Jmrn an image tolien b y on image-scanner. The estimated shape can Be used jar !he reatomiton 01 !he distorted book i n a y e . This problem i s a practical oppIicoiion oJ ihe shape Jmm shadlng theory. Mre confimeri fbat the esiimaied shape mostly nlotches !lie reat shape and t h ~ image mstotoiion ja...

JEL classification numbers: O3 and L8 2 ABSTRACT The diffusion literature implicitly assumes that a technological innovation remains homogeneous throughout the time period of the study with the sole modification being an assumed reduction in the real price of the technology over time. We argue that the technology can change in significant ways from one vintage to another to alter the nature of ...

In the print-type steganographic system and watermark, a calibration pattern is arranged around contents where invisible data is embedded, as plural feature points between an original image and the scanned image for normalization of the scanned image. In this paper, we propose an arrangement and detection method of an invisible calibration pattern based on the characteristics of human visual pe...