1. A method comprising: responsive to activation of an image-capture application, receiving, by a computing device, from an image capture device, a live stream of image data; storing, autonomously by the computing device, in a first buffer, while receiving the live stream of image data, a set of images based on the live stream of image data; identifying, by the computing device, one or more predetermined features among a subset of the set of images; generating, by the computing device, based on the subset of the set of images, an image object representing a summary of the live stream of image data; and outputting, by the computing device, for display at a display device, an indication of the image object.