Method for transmitting and displaying object tracking information and system thereof
AssigneeVivotek Inc.
InventorsCheng-Chieh Liu, Szu-Mo Chang, Kuan-Yu Lin
Life of this patent
Estimating the term…
Abstract
A method for transmitting and displaying an object tracking information includes steps of capturing an image by a camera, wherein an object exists in the image; analyzing the image by the camera to obtain a 3D world coordinate information of the object; transmitting a projection matrix and the 3D world coordinate information to a display device by the camera; using the projection matrix to convert the 3D world coordinate information into a 2D image coordinate information by the display device; and displaying a pattern corresponding to the object according to the 2D image coordinate information by the display device.
Claims12
A method for transmitting and displaying an object tracking information comprising steps of:
- capturing an image by a camera, wherein an object exists in the image;
- analyzing the image by the camera to obtain a 3D world coordinate information of the object;
- transmitting a projection matrix and the 3D world coordinate information to a display device by the camera;
- using the projection matrix to convert the 3D world coordinate information into a 2D image coordinate information by the display device through
- (
- x
- y
- w
- )
- =
- P
- 3
- ×
- 4
-
- (
- X
- Y
- Z
- T
- )
- ,
- wherein P3×4 represents the projection matrix of the camera, (x, y, w) represents a 2D homogeneous coordinate, and (X, Y, Z, T) represents a 3D homogeneous coordinate, X, Y and Z of (X, Y, Z, T) are the 3D world coordinate information, x and y of (x, y, w) are the 2D image coordinate information, and T of (X, Y, Z, T) and w of (x, y, w) are scaling factors for homogeneous coordinate;
- and
- displaying a pattern corresponding to the object according to the 2D image coordinate information by the display device.
A system for transmitting and displaying an object tracking information comprising:
- a camera capturing an image, an object existing in the image, the camera analyzing the image to obtain a 3D world coordinate information of the object;
- and
- a display device communicating with the camera, the camera transmitting a projection matrix and the 3D world coordinate information to the display device, the display device using the projection matrix to convert the 3D world coordinate information into a 2D image coordinate information through
- (
- x
- y
- w
- )
- =
- P
- 3
- ×
- 4
-
- (
- X
- Y
- Z
- T
- )
- ,
- wherein P3×4 represents the projection matrix of the camera, (x, y, w) represents a 2D homogeneous coordinate, and (X, Y, Z, T) represents a 3D homogeneous coordinate, X, Y and Z of (X, Y, Z, T) are the 3D world coordinate information, x and y of (x, y, w) are the 2D image coordinate information, and T of (X, Y, Z, T) and w of (x, y, w) are scaling factors for homogeneous coordinate, the display device displaying a pattern corresponding to the object according to the 2D image coordinate information.
Dependencies are inferred from the claim text.