Abstract: A three-dimensional (3D) pointing sensing apparatus may be provided. The 3D pointing sensing apparatus may include an image generation unit that may photograph a first light source and a second light source in a light emitting unit, and generate an image including an image of the first light source and an image of a second light source. Also, the 3D pointing sensing apparatus may include an orientation calculation unit that may calculate an orientation of the light emitting unit, using a size difference between the image of the first light source and the image of the second light source in the image.

Abstract: A three-dimensional (3D) position estimation apparatus and method using ultrasonic signals may estimate a 3D position based on distances between two ultrasonic signal transmitters and an ultrasonic signal receiver, and direction angles where the ultrasonic signal receiver receives the ultrasonic signals. When the ultrasonic signal receiver moves on a fixed distance, the 3D position estimation apparatus and method may estimate the 3D position of the ultrasonic signal receiver based on the fixed distance and the direction angles where the ultrasonic signal receiver receives the ultrasonic signals.

Abstract: Disclosed is a moving object and a location measuring device and method thereof that may transmit an ultrasound signal to the moving object through a plurality of ultrasound transmitting units, and may estimate a location of the moving object at a current time based on distance information of distances between the moving object and the plurality of ultrasound transmitting units measured based on the transmitted ultrasound, inertia information, and location information of the moving object at a time prior to the current time.

Abstract: A remote pointing apparatus is provided. A light receiving unit may receive emitted light. A filtering unit may filter a received signal to a first frequency component, a second frequency component, a third frequency component, and a fourth frequency component. A calculation unit may compare amplitudes of the first frequency component and the second frequency component to calculate a first coordinate axis value of a cursor on a display unit, and compare amplitudes of the third frequency component and the fourth frequency component to calculate a second coordinate axis value of the cursor on the display unit.

Abstract: Provided are an apparatus and a method of effectively creating real-time movements of a three dimensional virtual character by use of a small number of sensors. More specifically, the motion capture method, which maps movements of a human body into a skeleton model to generate movements of a three-dimensional (3D) virtual character, includes measuring a distance between a portion of a human body to which a measurement sensor is positioned and a reference position and rotation angles of the portion, and estimating relative rotation angles and position coordinates of each portion of the human body by use of the measured distance and rotation angles.