Method and system for extracting culture pond boundary from aviation orthoimage

The invention discloses a method for extracting a culture pond boundary from an aviation orthoimage. The method comprises the following steps: 1, establishing a candidate detection point set; 2, screening detection points from the candidate detection point set Sc-dtc; 3, extracting pond pixels in the aviation DOM image according to the detection point set Sdtc; 4, extracting the boundary of the pond pixel; 5, extracting a pond shadow, wherein the pond shadow and the pond pixels form an all-pixel set of the pond in the aviation DOM image; and 6, calculating and simplifying the pond boundary of the whole image. According to the method, the influence of shadows and other ground objects on pond boundary extraction can be reduced, and the accurate culture pond boundary can be extracted. 本发明公开了一种从航空正射影像中提取养殖水塘边界的方法，包括：1、建立候选检测点集合；2、从候选检测点集合Sc-dtc中筛选检测点；3、根据检测点集合Sdtc提取航空DOM影像中的水塘像素；4、提取水塘像素的边界；5、提取水塘阴影；水塘阴影与水塘像素构成航空DOM影像中水塘的全部像素集合；6、对整幅影像计算水塘边界并简化。该方法能够减少阴影和其它地物对水塘边界提取的影响，提取到精确的养殖水塘边界。