17. An article of manufacture including a non-transitory computer-readable storage medium having software stored thereon that, in response to execution by a processor, causes the processor to perform functions comprising: receiving a plurality of measurements for image captures, comprising a plurality of proximity measurements and a plurality of duration measurements related to the proximity measurements; determining a first proximity for an image capture, based on the plurality of proximity measurements; determining a first minimum duration related to the proximity for the image capture, based on the plurality of duration measurements; making a first prediction that text is within proximity of a camera based on a determination that the camera is within the first proximity for the image capture for at least the first minimum duration; in response to the first prediction, capturing an image of the text using the camera; identifying text within the captured image; performing an action associated with the identified text; receiving a second plurality of measurements for image captures, comprising a second plurality of proximity measurements and a second plurality of duration measurements related to the second plurality of proximity measurements; modifying at least one of the first proximity and the first minimum duration of time based on the second plurality of measurements; and after modifying at least one of the first proximity and the first minimum duration of time, making a second prediction that text is within proximity of the camera based on a determination that the camera is within the first proximity for the image capture for at least the first minimum duration.
21. The article of manufacture of claim 17 , wherein the functions further comprise: presenting a view comprising the text and a graphical element that indicates the text is associated with additional information.