Apparatus and method for calculating motion of object
AssigneeElectronics and Telecommunications Research Institute
InventorsMyung Gyu Kim, Jong Sung Kim, Seong Min Baek
Life of this patent
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Abstract
Disclosed are an apparatus and a method for measuring a speed of a rotation body and recognizing a spin using a line scan. The present invention provides an apparatus and a method for calculating a motion of an object capable of acquiring line scan images using some lines of an area scan camera and calculating a three-dimensional speed and a three-dimensional spin of a rotation body by using a composite image in which the line scan images are coupled. The present invention can provide a realistic game or training at low cost by providing realistic physical simulation of the rotation body while allowing a competitive price when producing products by using the existing inexpensive camera.
Claims15
An apparatus for calculating a motion of an object, comprising:
- a control unit that predetermines at least one line for which first images of an object will be acquired;
- an image acquirement unit that acquires first images for each predetermined line for each side by performing a line scan on at least two sides of the object;
- an image generation unit that generates second images including the object by coupling the first images for at least one predetermined line;
- and
- a motion calculation unit that calculates motion variation of the object based on the generated second images.
A method for calculating a motion of an object, comprising:
- predetermining at least one line for which first images of an object will be acquired;
- acquiring the first images for each predetermined line for each side by performing a line scan on at least two sides of the object;
- generating second images including the object by coupling the first images for at least one predetermined line;
- and
- calculating motion variation of the object based on the generated second images.
A method for calculating a motion of an object, comprising:
- predetermining at least one line for which line scan images of an object will be acquired by a camera;
- acquiring the line scan images for each predetermined line for each side by performing a line scan on at least two &des of the object;
- generating composite images including the object by coupling the first images for at least one predetermined line;
- calculating three-dimentional frames x, y, and t of the object by the following equaion:
- (x,y,t)=(x,y,(zi+zf)/2)
- wherein zi=z0×(ri/r0), zf=z0×(rf/f0),
- wherein z0 is a distance between the object and the camera, r0is a radius of an arc of the acquierd lines scan image, ri and rf are the radiuses of the arcs of a first and last line scan images respectively, zi and zf are lengths of the object of the first and last line scans, and x and y are frames of a central point of a composite image;
- and
- calculating motion variation of the object based on the generated composite images.
Dependencies are inferred from the claim text.