Ship retrieval method and device based on SIFT algorithm

A technology of ships and algorithms, applied in the field of image processing, to achieve the effect of invariant feature extraction

Inactive Publication Date: 2020-09-11
ZHUHAI DAHENGQIN TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that cannot efficiently and quickly obtain effective target ships from massive ship image data, thereby providing a ship retrieval method and device based on the SIFT algorithm

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  • Ship retrieval method and device based on SIFT algorithm
  • Ship retrieval method and device based on SIFT algorithm

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Embodiment Construction

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a ship retrieval method and device based on an SIFT algorithm, and the method comprises the steps: obtaining a to-be-detected image and a target ship image, and extracting a ship target region image from the to-be-detected image; obtaining key point feature vectors of the ship target area image and the target ship image according to an SIFT algorithm; determining the similarity between the ship target area image and the target ship image according to the key point feature vector; and when the similarity is higher than a first threshold, returning the ship target area image as a detection result. According to the invention, the SIFT algorithm is adopted to obtain a ship target area image and a key point feature vector in the target ship image; and the similarity between the ship target area image and the target ship image is calcculated according to the key point feature vector, and the ship target area image of which the similarity exceeds a first threshold valueis returned to serve as a detection result, so that invariant feature extraction can be realized, and the target ship image can be accurately detected from numerous ships.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a ship retrieval method and device based on the SIFT algorithm. Background technique [0002] As an important target of sensing information in coastal areas, the movement of ships is an important content of ship detection in the field of image processing. With the advancement of ship observation technology, the amount of ship image data that can be obtained is increasing rapidly. Since the ship data in the coastal area contains a variety of different scenes, including building areas, vegetation areas, mountains, rivers, etc., there is great interference to the identification and retrieval of ships. It has become an important issue to study how to obtain effective target ships from massive ship image data and retrieve the required ships. Contents of the invention [0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/46G06K9/62
CPCG06V20/00G06V10/50G06V10/462G06V2201/07G06F18/22
Inventor 邓练兵逯明吴浩清
Owner ZHUHAI DAHENGQIN TECH DEV CO LTD
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