Anger (1 ) , a number of papers describing both the physical characteristics of the instrument and its ap plications have been published (2—12) . However, the performance of the gamma camera has usually been discussed in terms of the parameters fundamental to a conventional scanner, and insufficient emphasis has been placed on characteristics that are unique to the camera. It is, of course, n...

The proposed system is a portable camera based visual assistance prototype for bind people to identify currency notes and also helps them to read printable texts from the handheld objects. To read printable texts, an efficient algorithm that combines an Optical Character Recognition (OCR) with Hierarchical optimization is used. In Pattern Recognition OCR every character is localized and separat...