US-20260127817-A1 - VIDEO CONFERENCE SYSTEM AND THREE-DIMENSIONAL MODELING METHOD USING THE SAME

Abstract

A video conference system and a three-dimensional modeling method using the same are provided. The three-dimensional modeling method of the video conferencing includes the following steps. A portable image capture device obtains a plurality of photos of an object and records a plurality of modeling information corresponding to the photos. The portable image capture device transmits the photos and the modeling information to a first electronic device. The first electronic device encodes each of the modeling information into each of the photos through a hidden watermark. The first electronic device transmits the photos with the hidden watermarks to a second electronic device. The second electronic device decodes each of the hidden watermarks of each of the photos to obtain each of the modeling information. The second electronic device creates a three-dimensional model according to the photos and the modeling information. The second electronic device displays the three-dimensional model.

Inventors

• Chi-Kang LEE
• Wen-Cheng Hsu
• Shih-Hao Lin
• Chieh-Sheng Wang
• Sergio CANTERO CLARES

Assignees

• ACER INCORPORATED

Dates

Publication Date

20260507

Application Date

20250806

Priority Date

20241101

Claims (20)

1. 1 . A three-dimensional modeling method for a video conference, comprises: obtaining a plurality of photos of an object and recording a plurality of modeling information corresponding to the photos by a portable image capture device; transmitting the photos and the modeling information to a first electronic device by the portable image capture device; encoding each of the modeling information into each of the photos through a hidden watermark by the first electronic device; transmitting the photos with the hidden watermarks to a second electronic device by the first electronic device; receiving the photos with the hidden watermarks by the second electronic device; decoding each of the hidden watermarks of each of the photos to obtain each of the modeling information by the second electronic device; creating a three-dimensional model according to the photos and the modeling information by the second electronic device; and displaying the three-dimensional model by the second electronic device.
2. 2 . The three-dimensional modeling method for the video conference according to claim 1 , wherein each of the modeling information includes a shooting direction, a spatial position, an image size and a shooting parameter.
3. 3 . The three-dimensional modeling method for the video conference according to claim 1 , wherein each of the hidden watermarks is encoded in an entire range of each of the photos.
4. 4 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the second electronic device builds the three-dimensional model only after receiving all of the photos with the hidden watermarks.
5. 5 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the second electronic device displays the three-dimensional model only after the three-dimensional model is completely built.
6. 6 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the three-dimensional model is stored in the second electronic device.
7. 7 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the three-dimensional model is displayed according to a viewing angle by the second electronic device, and the viewing angle is adjusted by the second electronic device.
8. 8 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the three-dimensional model is displayed according to a viewing angle by the second electronic device, and the viewing angle of the three-dimensional model is controlled by a mouse.
9. 9 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the three-dimensional model is displayed according to a viewing angle by the second electronic device, and the viewing angle of the three-dimensional model is controlled by a keyboard.
10. 10 . The three-dimensional modeling method for the video conference according to claim 1 , wherein the hidden watermark is scattered over multiple pixels.
11. 11 . A video conference system, comprising: a portable image capture device, used for obtaining a plurality of photos of an object and recording a plurality of modeling information corresponding to the photos; a first electronic device, comprising: a first transmission unit, used for receiving the photos and the modeling information from the portable image capture device; and a watermark encoding unit, used for encoding each of the modeling information into each of the photos through a hidden watermark, wherein the first transmission unit is further used for transmitting the photos with the hidden watermarks; and a second electronic device, comprising: a second transmission unit, used for receiving the photos with the hidden watermarks; a watermark decoding unit, used for decoding each of the hidden watermarks of each of the photos to obtain each of the modeling information; a modeling unit, used for creating a three-dimensional model according to the photos and the modeling information; an operating unit, used for providing a viewing angle; and a display unit, used for displaying the three-dimensional model according to the viewing angle.
12. 12 . The video conference system according to claim 11 , wherein each of the modeling information includes a shooting direction, a spatial position, an image size and a shooting parameter.
13. 13 . The video conference system according to claim 11 , wherein each of the hidden watermarks is encoded in an entire range of each of the photos.
14. 14 . The video conference system according to claim 11 , wherein the modeling unit of the second electronic device builds the three-dimensional model only after the second transmission unit of the second electronic device receives all the of the photos and all of the modeling information.
15. 15 . The video conference system according to claim 11 , wherein the display unit of the second electronic device displays the three-dimensional model only after the modeling unit of the second electronic device completely builds the three-dimensional model.
16. 16 . The video conference system according to claim 11 , wherein the three-dimensional model is stored in the second electronic device.
17. 17 . The video conference system according to claim 11 , wherein the viewing angle of the three-dimensional model is adjusted by the second electronic device.
18. 18 . The video conference system according to claim 11 , wherein the viewing angle of the three-dimensional model is controlled by a mouse.
19. 19 . The video conference system according to claim 11 , wherein the viewing angle of the three-dimensional model is controlled by a keyboard.
20. 20 . The video conference system according to claim 11 , wherein the hidden watermark is scattered over multiple pixels.

Description

This application claims the benefit of Taiwan application Serial No. 113141842, filed Nov. 1, 2024, the disclosure of which is incorporated by reference herein in its entirety. TECHNICAL FIELD The disclosure relates in general to a conference system and a three-dimensional modeling method for video conference using the same. BACKGROUND With the advancement of video technology, people can communicate and discuss over long distances through video conferencing software. During a video conference, as long as the speaker turns on the camera, his or her image can be transmitted to the participants. During the video conference, the presenter can show an object, an indoor environment or a beautiful view through the camera. In order to let the attendees see the object in its entirety, the presenter can rotate the object or shoot around it. However, even if the presenter tries his best to shoot all the details of the object, the attendees may still want to take a closer look at a certain angle, but they cannot keep asking the presenter to show the object again. Therefore, researchers are working on developing a technology that allows attendees to actively adjust the angle without asking the presenter to show it again. SUMMARY The disclosure is directed to a three-dimensional modeling method for video conference using the same. During the video conference, the speaker's first electronic device will display photos of an object from all directions and transmit them to the attendees'second electronic devices through the network. In addition, modeling information is added to the photos, allowing the second electronic device to quickly build a three-dimensional model. Using the three-dimensional model, attendees could rotate the object with the mouse or keyboard to fully see the appearance of the object. According to one embodiment, a three-dimensional modeling method for a video conference is provided. The three-dimensional modeling method for the video conference includes the following steps: obtaining a plurality of photos of an object and recording a plurality of modeling information corresponding to the photos by a portable image capture device; transmitting the photos and the modeling information to a first electronic device by the portable image capture device; encoding each of the modeling information into each of the photos through a hidden watermark by the first electronic device; transmitting the photos with the hidden watermarks to a second electronic device by the first electronic device; receiving the photos with the hidden watermarks by the second electronic device; decoding each of the hidden watermarks of each of the photos to obtain each of the modeling information by the second electronic device; creating a three-dimensional model according to the photos and the modeling information by the second electronic device; and displaying the three-dimensional model by the second electronic device. According to another embodiment, a video conference system is provided. The video conference system includes a portable image capture device, a first electronic device and a second electronic device. The portable image capture device is used for obtaining a plurality of photos of an object and recording a plurality of modeling information corresponding to the photos. The first electronic device includes a first transmission unit and a watermark encoding unit. The first transmission unit is used for receiving the photos and the modeling information from the portable image capture device. The watermark encoding unit is used for encoding each of the modeling information into each of the photos through a hidden watermark. The first transmission unit is further used for transmitting the photos with the hidden watermarks. The second electronic device includes a second transmission unit, a watermark decoding unit, a modeling unit, an operating unit and a display unit. The second transmission unit is used for receiving the photos with the hidden watermarks. The watermark decoding unit is used for decoding each of the hidden watermarks of each of the photos to obtain each of the modeling information. The modeling unit is used for creating a three-dimensional model according to the photos and the modeling information. The operating unit is used for providing a viewing angle. The display unit is used for displaying the three-dimensional model according to the viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an example of a three-dimensional modeling method for a video conference of an embodiment of the present disclosure. FIG. 2 is a block diagram of a video conference system according to an embodiment of the present disclosure. FIGS. 3a to 3B are flowcharts of the three-dimensional modeling method for the video conference according to an embodiment of the present disclosure. FIG. 4 illustrates the step S240 and the step S250. In the following detailed description, for purposes of explanation, numerous specific