1. A vision assistive device comprising: a housing having a base for positioning the housing on a surface, a top portion, and a front wall, back wall, and side walls connecting the base to the top portion and together defining an inner volume of the housing, wherein the top portion protrudes outward from the front wall of the housing; multiple imaging units spaced away from one another along the top portion of the housing, each imaging unit being stationary with respect to the housing and angled downward so a central axis of the imaging unit forms an acute angle with the surface so the imaging unit captures a target image from a target object; and a control system accommodated within the inner volume of the housing, the control system being connected to the one or more imaging units to process the target image captured by each imaging unit.