Small target detection method based on regional nomination

A small target detection and small target technology, which is applied in the field of image processing, can solve the problems of difficult detection of small target in the image, and achieve the effects of reducing the amount of calculation, comprehensive detection, and suppression of background noise

Active Publication Date: 2018-11-16
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Therefore, it is very difficult to detect small objects in images.

Method used

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  • Small target detection method based on regional nomination
  • Small target detection method based on regional nomination
  • Small target detection method based on regional nomination

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with specific examples.

[0052] In the small target detection method based on region nomination provided in this embodiment, an RGB color standard image is input for detection. The complete process of the detection is as follows figure 1 , the complete neural network structure diagram used in the designed image small target detection is as follows figure 2 . When preprocessing the image file, use an algorithm to convert the image to be detected to a uniform size; next, use a 5-layer convolutional neural network to extract 5 layers of basic features from the image; then, the 4th and 5th layers of the image feature fusion; then use the region nomination network to generate small target region nominations on the fusion feature map; finally, map the nominated region generated by the region nomination network to the fusion feature map, and use the fully connected layer network on the nomination region f...

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Abstract

The invention discloses a small target detection method based on regional nomination. The method comprises: step one, carrying out input image preprocessing and converting the input image into one with a unified size; step two, extracting an image base feature map and extracting five-layer feature maps; step three, carrying out feature fusion and carrying out fusion of the fourth-layer feature mapand the fifth-layer feature map; step four, carrying out small target area nomination and generating small target area nomination by using a regional nomination network; and step five, carrying out small target bounding frame refinement and small target area classification. The method has advantages of fast calculation speed, high small target recognition precision, good generalization performance, and good detection performance of common minimum target areas.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a small target detection method based on region nomination. Background technique [0002] Target detection refers to the process of accurately locating the objects contained in the image from the image and identifying the category of the object. Small target detection refers to locating and identifying objects that contain only a small number of pixels in the image. Small target detection has a very high application prospect in the fields of driverless road sign recognition and personal carry-on item recognition in the security field. [0003] Specifically, target detection is to find out the position, size and category of all objects contained in the image from the image. Existing target detection methods include region-based convolutional neural network RCNN, Fast-RCNN, Faster-RCNN series neural networks, end-to-end convolutional neural network SSD, and YOLO ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/46G06K9/36G06N3/04
CPCG06V10/20G06V10/44G06N3/045
Inventor 张宇郑冬云郭炜强郑波关健创
Owner SOUTH CHINA UNIV OF TECH
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