1. An apparatus for processing images, the apparatus comprising: an image sensor configured to capture real time images at a plurality of resolutions from an environment of a user; a mobile power source; at least one processor device configured to: process, at an initial resolution, a plurality of images from the image sensor to determine existence of a trigger; access rules associating image context with image capture resolution to enable images of a first context to be processed at a lower capture resolution than images of a second context; analyze at least one first image to determine a first image context; select a first image capture resolution rule based on the determined first image context, wherein the first rule defines a first resolution; apply the first image capture resolution rule to at least one subsequent captured image; analyze at least one second image to determine a second image context; select a second image capture resolution rule based on the determined second image context, wherein the second rule defining a second resolution; and apply the second image capture resolution rule to at least one second subsequent captured image, wherein the second resolution is greater than the first resolution.