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Adaptively-adjustable infrared ship image active contour segmentation method

An adaptive adjustment, ship image technology, applied in the field of infrared imaging, can solve the problem of difficult to achieve high-precision segmentation of infrared ship image active contour, achieve the effect of high speed, avoid segmentation errors, and high segmentation accuracy

Inactive Publication Date: 2016-06-01
LIAONING NORMAL UNIVERSITY
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Problems solved by technology

Therefore, the existing image segmentation methods based on the active contour model are difficult to achieve high-precision segmentation of the active contour of infrared ship images.

Method used

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  • Adaptively-adjustable infrared ship image active contour segmentation method
  • Adaptively-adjustable infrared ship image active contour segmentation method
  • Adaptively-adjustable infrared ship image active contour segmentation method

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Embodiment Construction

[0033] The adaptively adjusted infrared ship image active contour segmentation method is carried out according to the following steps:

[0034] Step 1. Establish the form of energy functional F as follows:

[0035] (1)

[0036] in, relates to Ship Images The adaptive balance function of ; is the image gradient modulus; Ω is the area where the ship image is located; g is the gradient modulus of the ship target; and are two constants, which are approximately equal to the average gray value of the inside and outside of the contour, and their corresponding expressions are as follows:

[0037] (2)

[0038] Where H is the Heaviside function; the adaptive balance function in the model The selection is as follows:

[0039] (3)

[0040] The threshold T is automatically obtained by the method of convexity analysis;

[0041] Further, from the Euler-Lagrange equation, the horizontal evolution equation of model (1) can be obtained:

[0042] (4)

[0043] in, is t...

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Abstract

The invention provides an adaptively-adjustable infrared ship image active contour segmentation method capable of improving segmentation accuracy and speed. An adaptive balance function is defined; the weight of each part can be automatically adjusted according to the characteristics of an image itself, and therefore, curve evolution can be driven, and the accurate calculation and steady evolution of a model can be ensured; and in a weight function, an analysis process of a convexity function is added, so that threshold values in the balance function can be determined adaptively, and the accuracy of the segmentation model can be increased.

Description

technical field [0001] The invention relates to the technical field of infrared imaging, in particular to an adaptively adjusted infrared ship image active contour segmentation method that can improve segmentation accuracy and speed. Background technique [0002] The existing basic method of image segmentation based on the active contour model is to use the geometric characteristics of the image to establish an energy functional function, find the minimum value of the energy function under the variational method, and obtain the corresponding Euler-Lagrange equation, and then use the functional analysis The relevant knowledge in the fields of numerical analysis and numerical analysis is used to analyze the rationality of the model, and finally the image area of ​​interest is extracted. The current active contour segmentation models mainly include the following: the geodesic active contour model uses the characteristics (gradient) of the image itself to find geodesic lines tha...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T2207/10048
Inventor 方玲玲王相海
Owner LIAONING NORMAL UNIVERSITY
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