Sonar image automatic target identification method based on neural network visualization

A technology for automatic target recognition and sonar images, applied in neural learning methods, biological neural network models, neural architectures, etc., can solve problems affecting generalization ability, increase method labor costs, etc., and achieve the effect of reducing labor and time costs

Inactive Publication Date: 2021-06-29
ZHEJIANG UNIV
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Most methods complete the automatic target recognition task in two steps through different techn

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  • Sonar image automatic target identification method based on neural network visualization
  • Sonar image automatic target identification method based on neural network visualization
  • Sonar image automatic target identification method based on neural network visualization

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[0032] The present invention will be described in further detail below with reference to the accompanying drawings.

[0033] like figure 1 As shown, the method for automatic target recognition of sonar images based on neural network visualization proposed by the present invention mainly includes four steps:

[0034] 1) Use the ResNet-18 classification backbone network and the Grad-CAM neural network to visually build an automatic target recognition model; wherein, the Grad-CAM module is placed in front of the fully connected layer of the ResNet-18 classification backbone network;

[0035] 2) Build a shape preference data set based on ImageNet optical data set and adaptive instance regularization style transfer technology, use the shape preference data set to pre-train the automatic target recognition model, and obtain pre-training parameters that are robust to shape features,

[0036] 3) Using the sonar images marked with the sample categories as the training set, retrain the...

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Abstract

The invention discloses a sonar image automatic target identification method based on neural network visualization. By implementing the method for positioning and identifying the sonar image target only depending on the sample category labels, the labor cost of the method and the generalization ability in the field of sonar images are greatly reduced. In order to solve the problem of obvious overfitting of a training model caused by lack of a sonar data set, an optical data set used for original pre-training is converted into an optical data set based on shape preference through an adaptive instance regularization (AdaIN) style conversion method, so that the obtained pre-training parameters are more robust to shape features. Therefore, the auxiliary model focuses on extraction of specific shape features of a sonar image target in training of a sonar data set. Experiments prove that the method not only helps to solve the problem of model positioning misalignment caused by insufficient sonar data sets, but also further improves the effect of the model in the automatic target recognition task of the sonar image.

Description

technical field [0001] The invention belongs to the field of sonar target recognition, in particular to an automatic target recognition method for sonar images based on neural network visualization. Background technique [0002] The automatic target recognition technology of sonar images can not be affected by water quality and optical visibility, and is widely used in AUVs to undertake some measurement, detection and detection tasks. The automatic recognition of targets in sonar images is usually divided into two steps: positioning and recognition. The purpose of the localization part is to locate the area most likely to contain the target, while the classification part uses the information of the localization area to determine the category of the target. Most methods complete the automatic object recognition task in two steps through different techniques, which increases the labor cost of the method and also affects the generalization ability. [0003] In recent years, a...

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Application Information

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IPC IPC(8): G06K9/62G06N3/04G06N3/08
CPCG06N3/08G06N3/045G06F18/24
Inventor 郑荣濠楼冠廷
Owner ZHEJIANG UNIV
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