Infrared image sea-sky-line self adaption detection method

The invention discloses an infrared image sea-sky-line self adaption detection method which includes the following steps that (1) an original infrared image Forg is obtained; (2) edge detection is conducted on the original infrared image through a Canny operator, and an edge image Fedge is obtained; (3) a sliding window model MWin, the sea-sky-line length and a model LEN sum are built; (4) full-figure traversal is conducted on the edge image Fedge through the sliding window model MWin, and the sum of lengths of sea-sky-lines of different lines is solved; (5) the length of the sea-sky-lines and the line with the maximum LEN sum are defined to be the positions of the current image sea-sky-lines; (6) smoothing is conducted on the current image sea-sky-lines, and the filter value Lineseasky of the p+1th frame of the sea-sky-lines is output.