Portable device and operation method thereof

Abstract

A portable device includes a display module, an image capture module, and an eye-tracking module. The image capture module is used to capture images steadily. The eye-tracking module is used to track a user's viewpoint position relative to the portable device. Viewport within the images captured by the image capture module is adjusted in accordance with the user's viewpoint position for generating modified images displayed on the display module instantaneously. The modified images shown on the display module can fit the background scene seen by the user, and the augmented reality experience on the portable device may be improved accordingly.

What is claimed is: 
     
         1 . An operation method of a portable device, comprising:
 capturing images steadily by an image capture module of a portable device;   tracking a user's viewpoint position relative to the portable device;   adjusting viewport within the images captured by the image capture module in accordance with the user's viewpoint position for generating modified images; and   displaying the modified images on a display module of the portable device instantaneously.   
     
     
         2 . The operation method of the portable device according to  claim 1 , wherein the modified images displayed on the display module fit a background scene behind the portable device and seen by the user. 
     
     
         3 . The operation method of the portable device according to  claim 1 , wherein the step of tracking the user's viewpoint position comprises:
 tracking a distance and an orientation between at least one eye of the user and the portable device.   
     
     
         4 . The operation method of the portable device according to  claim 1 , wherein the step of tracking the user's viewpoint position comprises:
 calculating a distance and an orientation between at least one eye of the user and the image capture module of the portable device.   
     
     
         5 . The operation method of the portable device according to  claim 4 , wherein the user's viewpoint position relative to the portable device is tracked by an eye-tracking module in the portable device. 
     
     
         6 . The operation method of the portable device according to  claim 5 , wherein the distance and the orientation between at least one eye of the user and the image capture module of the portable device is calculated in accordance with a distance and an orientation between the eye of the user and the eye-tracking module and a relative position difference between the eye-tracking module and the image capture module. 
     
     
         7 . The operation method of the portable device according to  claim 1 , wherein the step of tracking the user's viewpoint position comprises:
 tracking a distance and an orientation between each eye of the user and the portable device, wherein the image capture module comprises a 3D image capture module, and the modified images displayed on the display module comprise naked eye 3D images.   
     
     
         8 . The operation method of the portable device according to  claim 7 , wherein the 3D image capture module comprises a 3D depth camera configured to record position information of objects in the images captured by the image capture module. 
     
     
         9 . The operation method of the portable device according to  claim 8 , wherein the images captured by the image capture module comprises different images for the left eye and the right eye of the user, and the modified images comprises different images displayed on the display module for the left eye and the right eye of the user. 
     
     
         10 . The operation method of the portable device according to  claim 1 , wherein the step of capturing the images by the image capture module, the step of tracking the user's viewpoint position, the step of adjusting the viewport within the images captured by the image capture module in accordance with the user's viewpoint position for generating the modified images, and the step of displaying the modified images on the display module are performed simultaneously. 
     
     
         11 . A portable device, comprising:
 a display module;   an image capture module configured to capture images steadily; and   an eye-tracking module configured to track a user's viewpoint position relative to the portable device, wherein viewport within the images captured by the image capture module is adjusted in accordance with the user's viewpoint position for generating modified images displayed on the display module instantaneously.   
     
     
         12 . The portable device according to  claim 11 , wherein the display module and the eye-tracking module are disposed at a front side of the portable device, and the image capture module is disposed at a back side of the portable device. 
     
     
         13 . The portable device according to  claim 11 , wherein the image capture module comprises a 3D depth camera configured to record position information of objects in the images captured by the image capture module. 
     
     
         14 . The portable device according to  claim 13 , wherein the display module comprises a naked eye 3D display module. 
     
     
         15 . The portable device according to  claim 11 , wherein the eye-tracking module comprises an infrared sensor. 
     
     
         16 . The portable device according to  claim 11 , further comprising:
 a viewport calculation module connected to the eye-tracking module and configured to calculate a distance and an orientation between at least one eye of the user and the image capture module of the portable device.   
     
     
         17 . The portable device according to  claim 16 , further comprising:
 a viewport adjust module connected to the viewport calculation module and configured to adjust the viewport within the images captured by the image capture module for generating the modified images.