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Animal target image extraction method and system

A target image and extraction method technology, applied in the computer field, can solve the problems of general shadow removal effect and poor operability

Active Publication Date: 2018-05-15
CHINA AGRI UNIV
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Problems solved by technology

In summary, the research shows that fuzzy set theory can realize target shadow detection, the algorithm is easy to accept and understand, and the design is simple, but there are limitations in the researched methods, which need to establish prior knowledge or characteristic assumptions of shadow areas, poor operability, and shadow areas. Average removal effect

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  • Animal target image extraction method and system
  • Animal target image extraction method and system
  • Animal target image extraction method and system

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Embodiment Construction

[0066] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0067] see figure 1 , provides an animal target image extraction method according to an embodiment of the present invention, which can accurately detect shadow areas and background areas in animal images, the method includes: designing a fuzzy set theory based on image brightness level information and neighborhood gradient information Membership function; according to the designed fuzzy set theory membership function, calculate the membership degree of each pixel in the animal image belonging to the set fuzzy set, and divide the animal image into the first type of area and the second type according to the size of the membership degree The second type of area; determine th...

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Abstract

The invention provides an animal target image extraction method and system. A fuzzy set theory membership function combining brightness information, brightness level information and neighborhood gradient information is designed; through the designed fuzzy set theory membership function and a brightness histogram curve, a shadow region and other regions in an animal image are preliminarily distinguished; shadow regions in other regions are accurately detected by adopting an Otsu method; all the shadow regions in the whole animal image are detected out; the shadow regions are removed to obtain the animal image; the detection precision of the shadow regions and a target region in the animal image is high; main external factors influencing the image are well adjusted and controlled; relativelyhigh shadow detection precision and robust performance are achieved; and a foundation is laid for work of target tracking, feature extraction and the like.

Description

technical field [0001] The present invention relates to the field of computer technology, and more specifically, to a method and system for extracting animal target images. Background technique [0002] Animal image shadow removal is the basis of target animal detection, recognition, and tracking. In complex backgrounds, due to the characteristics of light and animal shadows, the shadow of the animal moves with it, and the shadow of the animal will affect the shape and size of the detected target. , which seriously affects the extraction of moving objects. If the shadow is removed, the accuracy of image processing can be improved. Therefore, effective and high-precision animal shadow detection and removal methods are particularly important, among which shadow detection is the basic work of shadow removal. [0003] Some scholars have proposed many methods to detect moving shadows. Salvador et al. divided shadow detection methods into model-based and feature-based shadow dete...

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Application Information

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IPC IPC(8): G06T7/194G06T7/11G06T7/136
CPCG06T7/11G06T7/136G06T7/194
Inventor 孙龙清李玥邹远炳刘岩罗冰李亿杨
Owner CHINA AGRI UNIV
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