Pointer light tracking method, program, and recording medium thereof
AssigneeTakram Design Engineering
InventorKinya Tagawa
Life of this patent
Estimating the term…
Abstract
A pointer light tracking method wherein all black image and white square images located at four corners of the all black image are projected on the display, the display on which the all black image and the white square images are displayed is shot by a camera, a domain corresponding to the white square image is extracted from the obtained image data, central coordinates (x, y) of the extracted domain are computed, and a parameter necessary in performing distortion correction by use of projection conversion for coordinate expressing the position of the pointer light on the display is computed from the computed central coordinates (x, y) and central coordinates (X, Y) of the white square image.
Claims9
A pointer light tracking method for shooting pointer light projected on a display by a camera to track the pointer light on the display by a computer based on the obtained image data, comprising:
- projecting an all black image and white square images located at four corners of the all black image on the display;
- shooting a display where the all black image and the white square images are displayed;
- extracting a domain corresponding to the white square image from the obtained image data;
- computing central coordinates (x, y) of the extracted domain;
- and
- computing a parameter which is needed at the time of performing distortion correction by use of projection conversion for a coordinate expressing a position of the pointer light on the display from the computed central coordinates (x, y) and the central coordinates (X, Y) of the white square image.
A pointer light tracking method for shooting pointer light projected on a display by a camera to track the pointer light on the display by a computer based on the obtained image data, comprising:
- adjusting any one or two or more of an shutter speed, exposure, or a gamma value of the camera which shoots a display where the pointer light is displayed;
- and
- obtaining an image data in which only the pointer light is strongly displayed.
A pointer light tracking method for shooting pointer light projected on a display by a camera to track the pointer light on the display by a computer based on the obtained image data, comprising:
- performing gradation processing for the image data;
- and
- enlarging a domain of light spot of the pointer light contained in the image data.
A pointer light tracking program with a computer having a function for tracking pointer light on a display based on an image data obtained by shooting by a camera the pointer light projected on the display, the function comprising:
- means for shooting by the camera a display where an all black image and white square images located at four corners of the all black image are displayed to extract a domain corresponding to the white square image from the obtained image data;
- means for computing central coordinates (x, y) of the extracted domain;
- and
- means for computing a parameter which is needed at the time when distortion correction is performed by use of projection conversion for a coordinate expressing a position of the pointer light on the display from the computed central coordinates (x, y) and the central coordinates (X, Y) of the white square image.
A pointer light tracking program with a computer having a function for tracking pointer light on a display based on an image data obtained by shooting by a camera the pointer light projected on the display, the function comprising:
- means for adjusting any one, or two or more of a shutter speed, exposure, and a gamma value of the camera which shoots a display where the point light is displayed to obtain the image data in which only the pointer light is strongly displayed.
A pointer light tracking program with a computer having a function for tracking pointer light on a display based on an image data obtained by shooting by a camera the pointer light projected on the display, the function comprising:
- means for performing gradation processing for the image data to enlarge a domain of a light spot of the pointer light contained in the image data.
Dependencies are inferred from the claim text.