A ship detection method based on edge matching in infrared forward-looking images
A technology of front view and edge map, applied in image analysis, image enhancement, image data processing, etc., to achieve the effect of low computational complexity, high matching accuracy, and simple ship detection process
Active Publication Date: 2019-07-23
HUAZHONG UNIV OF SCI & TECH
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This solves the technical problem of certain limitations in the application of the ship detection algorithm in the prior art to the medium and low resolution infrared front view in the complex port background
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0041] figure 1 It is a schematic flow chart of an edge-matching-based infrared forward-looking image ship detection method disclosed in an embodiment of the present invention. figure 1 The method shown includes the following steps:
[0042] S1: Template preparation: binarize the optical remote sensing image, outline along the port, and draw a prior geographic information template map of the p...
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The invention discloses an infrared forward-looking image ship detection method based on edge matching, which establishes a port prior template map according to the optical remote sensing image; performs perspective on the template map according to the returned height, pitch angle, roll angle and yaw angle of the aircraft Transformation; extract edges from the template map and infrared front view after perspective transformation; match the template edge map with the front view edge map to obtain the initial matching position; considering the error of the aircraft height and attitude parameters, a local fine matching method is proposed for precise positioning and rotation angle compensation; determine the land area and sea area in the front view according to the position, rotation angle and template information, and segment the sea area in the infrared front view; mark the segmented front view with oblique rectangles to obtain the initial suspected ship target; The initial suspected ship target is separated by ship and multi-feature detection to eliminate false alarms, and the ship target is obtained, which can be applied to ship detection in the middle and low resolution infrared front view in the complex port background.
Description
technical field [0001] The invention belongs to the technical fields of heterogeneous image matching, target detection, and infrared image processing, and more specifically, relates to an edge matching-based infrared forward-looking image ship detection method. Background technique [0002] As the main carrier of maritime transportation, ships play a vital role in civil and military use, and ship target detection has important strategic significance. At present, the research on ship detection mainly focuses on ship detection in high-resolution optical remote sensing images under the background of the sea surface. There are certain limitations. [0003] The ship detection in the infrared front view in the complex port background has the following difficulties: (1) The ships moored in the port and the adjacent land have similar gray information, and direct segmentation cannot achieve the purpose of separating the ship from the background. (2) The ship is stuck to the land, a...
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IPC IPC(8): G06K9/00G06K9/46G06T7/11G06T7/13
CPCG06T2207/10048G06T2207/10032G06T2207/20068G06V20/13G06V20/194G06V10/443
Inventor 王岳环秦小娟洪星戴开恒
Owner HUAZHONG UNIV OF SCI & TECH