Real time image processing on a portable aid device for low vision patients

Abstract

Low vision patients are subjects with very restricted visual fields or low contrast. There are different pathologies affecting this kind of patients. From a functional point of view the residual vision can be classified in three categories: low contrast vision, tunnel vision and peripheral vision. This contribution describes simple real-time image processing schemes that can help this kind of patients. The presented approaches have been implemented in specific hardware (FPGA device) to achieve real-time processing with low cost portable systems. This represents a very valid alternative to optical aids that are widely used in this field. © Springer-Verlag Berlin Heidelberg 2006.