[특허]Camera work detecting method

[미국특허] Camera work detecting method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04N-007/18 H04N-005/225 G06F-015/70
출원번호	US-0840825 (1992-02-25)
우선권정보	JP-0070475 (1991-03-11)
발명자 / 주소	Miyatake Takafumi (Hachioji JPX) Ueda Hirotada (Kokubunji JPX) Yoshizawa Satoshi (Kawasaki JPX)
출원인 / 주소	Institute for personalized information environment (Tokyo JPX 03)
인용정보	피인용 횟수 : 39 인용 특허 : 0

초록 ▼

A motion picture image editing method and in particular, a method for detecting such camera works as zooming and panning motions from a motion picture image stored in video tape or the like. In this method, a motion picture image constituted by a plurality of consecutive picture images on every frame basis, and on time series basis and on the basis of a correlation value for a displacement between the frames at a typical point determined for each of small blocks constituting the motion picture image, a motion vector for each of the small blocks is detected. Then a first motion parameter for estimation of a motion of a camera is generated with use of the motion vector detected at corresponding one of the typical points of first one of the frames. Or the first motion parameter for estimation of the motion of the camera is generated with use of a combination of the motion vector and a position vector at corresponding one of the typical points of a second frame inputted previous by one frame to the first frame. Further, the first motion parameters for the respective frames are found, the found first motion parameters are integrated until an integrated value exceeds a predetermined allowable value, and the integrated value is averaged through an integration period to calculate a second motion parameter for determination of the camera motion for the integration period. Finally, the camera motion is detected on the basis of the second motion parameter.

대표청구항 ▼

A camera work detecting method comprising the steps of: inputting a motion picture image constituted by a plurality of consecutive picture images on every frame basis and on time series basis and on the basis of a correlation value for a displacement between said frames at a typical point determined for each of small blocks constituting said motion picture image, detecting a motion vector for each of said small blocks; generating a first motion parameter for estimation of a motion of a camera with use of either one of the motion vector detected at corresponding one of said typical points of first one of said frames and a combination of said motion vector and a position vector at corresponding one of the typical points of a second frame inputted previous by one frame to said first frame; finding said first motion parameters for said respective frames and integrating the found first motion parameters until an integrated value exceeds a predetermined allowable value; averaging said integrated value through an integration period and calculating a second motion parameter for determination of said camera motion for the integration period; and detecting said camera motion on the basis of said second motion parameter.

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[미국특허] Camera work detecting method 원문보기

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