An address direction guiding apparatus includes: an azimuth sensor configured to measure an azimuth; a light output unit configured to output light; and a control unit configured to control the light output unit to output light differently depending on an angle between a target azimuth and the azimuth measured by the azimuth sensor.

Golf stroke training apparatus, as well as methods and systems to train a golfer to improve golf strokes, including putting strokes, wherein the golf stroke training apparatus provides a planar surface that can be levelled statically to the surface below it and can be adjusted by adding slope and/or pitch in quantifiable measurements and with a high degree of accuracy, wherein the repeatable golf stroke environments so provided permit repeatable and quantifiable golfer stroke actions and analysis and leading to golf stroke consistency.

Systems and methods for playing a golf game are disclosed herein. In an embodiment, a system for playing a golf game within limited confines includes a wall unit, a floor unit, and a control unit. The wall unit is configured to display a virtual portion of the golf game. The floor unit is configured to enable a physical portion of the golf game. The control unit is programmed to use first data related the virtual portion and second data related to the physical portion to enable a golfer to play a full golf hole.

The present application discloses a golf ball floor type detection method, a system, and a storage medium. The method includes the following steps: correcting distortion of the camera; calibrating a camera; triggering of hitting a ball: monitoring a pixel variation value of a serving position of a golf ball in a picture captured by the camera in real time, and determining triggering of hitting a ball when the pixel variation value of the position exceeds a threshold value; positioning a golf ball: processing the picture captured by the camera after triggering of hitting a ball with a dynamic segmentation based on a fuzzy entropy, and positioning the processed picture to acquire coordinate data of the golf ball; calculating parameters; and detecting a rotating speed of the golf ball.

The present application discloses a top-mounted golf ball detection method, applied to a golf system with a top camera configured for detecting a golf ball provided with a mark thereon. The method comprises: calibrating a camera: converting an image coordinate system of the camera into a world coordinate system; positioning a golf ball: acquiring coordinate data of the golf ball by performing a global positioning on an entire first frame picture captured by the camera after the ball is served; and for a subsequent frame picture captured by the camera after the ball is served, predicting a falling point range of the golf ball and obtaining a local picture of the frame picture according to the falling point range, and acquiring coordinate data of the golf ball by performing a global positioning on the local picture; calculating parameters; and detecting a rotating speed of the golf ball.

Methods, systems, and apparatus, including medium-encoded computer program products, for 3D flight tracking of objects include a method including determining a three dimensional trajectory based on initial observations, extrapolating the three dimensional trajectory backward in time to generate an extrapolated trajectory, calculating distance measures between the extrapolated trajectory and defined physical locations, waiting for additional observations when none of the distance measures satisfy a threshold distance, identifying one of the defined physical locations as an origin when only one of the distance measures satisfies the threshold distance and an error measure satisfies a predefined criteria, identifying one of the defined physical locations as the origin when two of the distance measures satisfy the threshold distance and only one of first and second error measures satisfies the predefined criteria, and waiting for additional observations when neither the first error measure nor the second error measure satisfies the predefined criteria.

A system that wirelessly integrates actual sports equipment with a computer and the internet to allow players remotely located from one another to play a competitive simulated sports game.

Disclosed herein are a device and method for sensing a moving ball configured to analyze continuously acquired images of the moving ball and to calculate information about the spin of the moving ball based on the analysis result. It is possible to calculate the spin of the moving ball without providing a specific marker on the ball. In the case in which a logo or a brand mark is present on the ball, or in which dimples or cracks, which are feature portions in an image, are also present on the ball, it is possible to easily, rapidly, and accurately calculate the spin of the moving ball using the same.

A system for illustrating the flight of a sports ball includes a radar, an imager, and a controller. The imager is configured to image a moving sports ball. The controller is configured to (i) receive, from the imager, an image including the moving sports ball, (ii) receive, from the radar, radar data associated with the moving sports ball, (iii) determine, from the radar data, a portion of a trajectory of the moving sports ball, (iv) alter the image to illustrate the portion of the trajectory relative to the moving sports ball, and (v) output the altered image.

Embodiments herein describe a wristband for securing a smart electronic wrist device to the human subject. A heart rate sensor, coupled to the wristband of one embodiment, attaches to the human subject, and to generate electronic signals responsive to the heart rate of the human subject. An analog to digital signal converting circuit (ADC), electronically coupled to the heart rate sensor, to receive electrical signals generated by the heart rate sensor. A digital signal encoding circuit, electronically coupled to the ADC, to convert the electrical signals to data signals. A wireless communication interface to transmit the digital signals wirelessly to a handheld phone call device. The handheld cellular device includes a physiological processor for analysis of the data signals concerning the heart rate of the human subject.