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Feature extraction model training method, image retrieval method, device and equipment

A technology for model training and feature extraction, applied in the computer field, can solve problems such as unsatisfactory retrieval effect, and achieve the effect of improving image retrieval effect and robustness.

Pending Publication Date: 2021-10-22
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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Problems solved by technology

Current feature extraction schemes can only capture obvious visual cues in images, while ignoring subtle visual cues, which makes the retrieval effect of the extracted features unsatisfactory.

Method used

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  • Feature extraction model training method, image retrieval method, device and equipment
  • Feature extraction model training method, image retrieval method, device and equipment
  • Feature extraction model training method, image retrieval method, device and equipment

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Embodiment Construction

[0056] In order to make the objects, technical solutions and advantages of the present application, the technical solutions of the present application will be described in conjunction with the specific embodiments and corresponding drawings of the present application. Obviously, the described embodiments are merely embodiments, not all of the embodiments. Based on the embodiments in the present application, one of ordinary skill in the art is the scope of this document without all other embodiments obtained without making creative labor.

[0057]The present specification provides a feature extraction model training method and apparatus, as well as an image retrieval method and an installation. These methods and devices can be performed by an electronic device, or is performed by software or hardware devices mounted in an electronic device. The electronic devices here include, but is not limited to, terminal devices or servers, including but not limited to: smartphones, PersonalCom...

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Abstract

The embodiment of the invention discloses a feature extraction model training method, an image retrieval method, a device and equipment, and the method comprises the steps of inputting a batch of sample images containing various types of sample images into a target feature extraction model, and obtaining the original features of the batch of sample images; performing selective masking on the original features of the batch of sample images to mask distinctive feature elements in the original features of the batch of sample images to obtain mask features of the batch of sample images; then calculating loss based on the mask features of the batch of sample images; and finally, optimizing parameters of the target feature extraction model based on the strategy with the minimum loss.

Description

Technical field [0001] This document relates to the field of computer technology, and more particularly to a feature extraction model training method, an image retrieval method, a device, and a device. Background technique [0002] Image retrieval plays an important role in the field of computer visual identification, for example, fine-grained image retrieval in the field of human identification and pet identification. Among them, fine-grained image retrieval refers to image retrieval of different individuals (or called objects) under the same category, such as image retrieval of different people, cats, dogs, and flowers. [0003] Feature extraction is a very important ring in image retrieval, and the characteristic extraction results are directly affecting the effect of the retrieval. When the previous feature extraction scheme can only capture obvious visual clues in the image, ignore subtle visual clues, which makes the search effect of the extracted feature is not ideal. Inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/532G06K9/46G06N3/04G06N3/08
CPCG06F16/532G06N3/08G06N3/045
Inventor 徐富荣王萌张伟程远褚崴
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD
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