Patent ID: 11962891
Assignee: BEIJING SUPERHEXA CENTURY TECHNOLOGY CO. LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. An image preview method applied to a head-mounted device provided with a camera, comprising:
determining a target object contained in a first image captured by the camera;
cropping an image area from the first image, wherein the image area contains the target object; and
enlarging the image area to a predefined preview size, and previewing and displaying the enlarged image area in a shooting preview interface;
wherein previewing and displaying the enlarged image area in the shooting preview interface of the camera comprises:
displaying the first image while the enlarged image area is being displayed, and marking the target object in the first image, wherein a display area of the first image is a changeable area that can be moved or scaled according to a user operation, and the first image is overlaid on the enlarged image area;
wherein the method further comprises:
generating a second prompt message under a circumstance where the target object moves out of the first image, wherein the second prompt message is used to indicate such a movement of the head-mounted device that a first image re-captured by the head-mounted device after the movement contains the target object;
wherein the generating the second prompt message comprises:
acquiring device movement information recorded by a posture sensor carried in the head-mounted device, wherein the device movement information is used to record a corresponding historical device movement direction of the head-mounted device when the target object moves out of the first image; and
generating the second prompt message containing a first movement direction, wherein the first movement direction is an opposite direction of the historical device movement direction;
or,
acquiring object movement information of the target object, wherein the object movement information is used to record a corresponding historical object movement direction of the target object when the target object moves out of the first image; and
generating the second prompt message containing a second movement direction, wherein the second movement direction is a same direction as the historical object movement direction.