Abstract: A method can include, based on a context of a wearable device, periodically capturing and storing, by the wearable device, multiple images, the multiple images being stored in a buffer included in the wearable device, periodically erasing a least-valuable image, from among the multiple images, from the buffer, receiving a request to view the multiple images stored in the buffer, and in response to the request to view the multiple images stored in the buffer, outputting the multiple images stored in the buffer.

Abstract: A controller bypasses processing raw image data captured by an image sensor at a wearable device and selects among modes of operation, to direct the raw image data to a light engine, to a transmitter, and/or to a computer vision engine. The light engine outputs display light based on the raw image data, the transmitter transmits the raw image data external to the wearable device, and the computer vision engine analyzes the raw image data to identify at least one feature represented in the raw image data and outputs computer vision data. The modes of operation selected by the controller reduce or eliminate intensive image signal processing operations performed by the wearable device on the raw image data.