Automated calibration of head-mounted hands-free camera

A head-mounted device comprising:

• at least one sensor system for detecting translation and rotation of the head-mounted device;
• and
• an image sensor for recording images;
• the head-mounted device being configured to automatically calibrate parameters under which the image sensor operates when a detected translation remains below a predetermined translational threshold and a detected rotation remains below a predetermined rotational threshold for at least a predetermined period of time;
• wherein the predetermined length of time is at least 1.0 s, wherein the predetermined translational threshold is at most 5.0 cm, wherein the predetermined rotational threshold is at most 10.0°, and wherein the automatic calibration is performed based on the scene recorded by the image sensor.