Electronic image stabilization method based on characteristic straight line of ship-borne camera system
A feature line and camera system technology, applied in the field of image processing, can solve the problems of inability to ensure high matching accuracy, difficulty in ensuring real-time image stabilization, and low parameter solution accuracy, achieving reduced feature selection, good real-time performance, and computational low-complexity effects
Inactive Publication Date: 2011-04-06
XIDIAN UNIV
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The invention discloses an electronic image stabilization method based on the characteristic straight line of a ship-borne camera system, belongs to the technical field of image processing and solves the instability problem of the video images of the ship-borne camera system in the sailing process of the ship. The method comprises the following specific steps: (1) selecting a reference frame, reading the current frame; (2) performing image binarization; (3) using sobel operator to perform edge detection to the binary image; (4) adopting hough transform to extract the discontinuous sea-sky-line in the image, utilizing the least square method to fit the sea-sky-line and obtain a continuous characteristic straight line; (5) performing horizontal projection to the characteristic straight line; (6) solving the equation of the straight line; (7) calculating the offset Delta y; (8) calculating the offset Delta theta; and (9) translating the current frame Delta y vertically and rotating the current frame Delta theta to realize image stabilization. The method fully utilizes the characteristic that the sea-sky-line always exists during the sailing process to reduce too many characteristic selections and characteristic matchings; and the method is characterized by good real-time, easy realization method, low computation complexity and the like.
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