The analysis of scanned documents is important in the construction of digital libraries and paperless offices. One significant challenge is coping with artifacts of photocopying and scanning. We present a series of simple techniques for handling these difficulties. Using 125 images of the University of Washington scanned documents database, we demonstrate the effectiveness of these methods in p...

Figura 1 – Pterigios reproducidos. A) Pterigión evidentemente reproducido. B) Postoperatorio con congestión conjuntival intensa en paciente sintomático esde épocas remotas el pterigión se ha definido como una roliferación fibro vascular de la conjuntiva que invade la córea y ha sido objeto de numerosos estudios en medicina que atan desde 1.000 a. C. En la India, Susruta, considerado como l prim...

The Sun rotates differentially with a fast equator and slow pole. Convection in the solar interior is thought to maintain differential rotation. However, although many numerical simulations have been conducted reproduce rotation, previous high-resolution calculations parameters fall into anti-solar (fast pole) rotation regime. Consequently, we still do not know true reason why has fast-rotating...