Diagnosing method of golf swing and silhouette extracting method

A diagnosing system of a golf swing comprising:

• (A) a camera photographing a golf player swinging a golf club to hit a golf ball and the golf club;
• (B) a memory storing photographed image data;
• and
• (C) a calculating part,
• wherein the calculating part has:
• (C1) a function for obtaining an edge image of a frame extracted from the image data;
• (C2) a function for subjecting the edge image to binarization based on a predetermined threshold value to obtain a binary image;
• and
• (C3) a function for subjecting the binary image to Hough transform processing to extract a position of a shaft.

A diagnosing method of a golf swing comprising the steps of:

• a camera photographing a golf player swinging a golf club to hit a golf ball and the golf club in a state where a golf club head in an address is positioned in a reference area in a screen to obtain image data;
• a calculating part obtaining an edge image of a frame extracted from the image data;
• the calculating part subjecting the edge image to binarization based on a predetermined threshold value to obtain a binary image;
• the calculating part subjecting the binary image to Hough transform processing to extract a position of a shaft of the golf club, and specifying a tip coordinate of the golf club;
• the calculating part contrasting tip coordinates of different frames to determine a temporary flame in the address;
• and
• the calculating part calculating color information in the reference area of each of frames by backward sending from a frame after the temporary frame by a predetermined number, and determining a frame in the address based on change of the color information.

A diagnosing system of a golf swing comprising:

• (A) a camera photographing a golf player swinging a golf club to hit a golf ball and the golf club in a state where a golf club head in an address is positioned in a reference area in a screen;
• (B) a memory storing the photographed image data;
• and
• (C) a calculating part,
• wherein the calculating part has:
• (C1) a function for obtaining an edge image of a frame extracted from the image data;
• (C2) a function for subjecting the edge image to binarization based on a predetermined threshold value to obtain a binary image;
• (C3) a function for subjecting the binary image to Hough transform processing to extract a position of a shaft of the golf club, and specifying a tip coordinate of the golf club;
• (C4) a function for contrasting tip coordinates of different frames to determine a temporary flame in the address;
• and
• (C5) a function for calculating color information in the reference area of each of frames by backward sending from a frame after the temporary frame by a predetermined number, and determining a frame in the address based on change of the color information.

A diagnosing method of a golf swing comprising the steps of:

• a camera photographing a golf player swinging a golf club to hit a golf ball and the golf club, to obtain image data;
• a calculating part determining a frame of a predetermined position during a takeback from a frame extracted from the image data;
• the calculating part extracting a position of a shaft of the golf club in the frame of the predetermined position;
• the calculating part determining an intersecting point of an extended line of the shaft and a straight line passing through a tiptoe position of golf player and a position of the golf ball before an impact;
• and
• the calculating part determining quality of a posture of the golf player in the predetermined position during the takeback based on a position of the intersecting point.

A silhouette extracting method comprising the steps of:

• photographing an operating photographic subject together with a background scene to obtain a plurality of flames, each of the frames including a large number of pixels;
• producing a whole frame set including all the frames for each of the pixels;
• determining whether each of the pixels of each of the frames has an achromatic color or a chromatic color, and producing a chromatic color frame set and an achromatic color frame set for each of the pixels;
• producing a first histogram in which a frequency is a frame number and a class is first color information, for the whole frame set;
• producing a second histogram in which a frequency is a frame number;
• a class for the chromatic color frame set is second color information;
• and a class for the achromatic color frame set is third color information, for the chromatic color frame set and the achromatic color frame set;
• and
• deciding whether the frame of each of the pixels is the background scene or the photographic subject based on the first histogram and the second histogram.

A silhouette extracting system comprising:

• (A) a camera for photographing an operating photographic subject together with a background scene;
• (B) a memory storing photographed image data;
• and
• (C) a calculating part,
• wherein the calculating part comprises:
• (C1) a frame extracting part extracting a plurality of frames including a large number of pixels from the image data;
• (C2) a first set producing part producing a whole frame set including all the frames for each of the pixels;
• (C3) a second set producing part determining whether each of the pixels of each of the frames has an achromatic color or a chromatic color, and producing a chromatic color frame set and an achromatic color frame set for each of the pixels;
• (C4) a first histogram producing part producing a first histogram in which a frequency is a frame number and a class is first color information, for the whole frame set;
• (C5) a second histogram producing part producing a second histogram in which a frequency is a frame number;
• a class for the chromatic color frame set is second color information;
• and a class for the achromatic color frame set is third color information, for the chromatic color frame set and the achromatic color frame set;
• and
• (C6) a deciding part deciding whether each of the frames of each of the pixels is the background scene or the photographic subject based on the first histogram and the second histogram.