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1. (WO2017020741) METHOD, APPARATUS AND SYSTEM FOR RETRIEVING IMAGE, ACQUIRING IMAGE INFORMATION AND IDENTIFYING IMAGE

Pub. No.:    WO/2017/020741    International Application No.:    PCT/CN2016/091519
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Tue Jul 26 01:59:59 CEST 2016
IPC: G06F 17/30
Applicants: ALIBABA GROUP HOLDING LIMITED
阿里巴巴集团控股有限公司
YANG, Chuan
杨川
ZHANG, Lun
张伦
CHU, Rufeng
楚汝峰
Inventors: YANG, Chuan
杨川
ZHANG, Lun
张伦
CHU, Rufeng
楚汝峰
Title: METHOD, APPARATUS AND SYSTEM FOR RETRIEVING IMAGE, ACQUIRING IMAGE INFORMATION AND IDENTIFYING IMAGE
Abstract:
Disclosed are a method and apparatus for retrieving an image, a method and apparatus for acquiring image information, a method and apparatus for identifying an image, a system for identifying an image, a method and apparatus for calculating an image feature value, and an electronic device. The method for retrieving an image comprises: extracting a local feature of an image to be retrieved; calculating a feature value of the local feature by using a pre-trained depth self-coded network model; matching the feature value with a feature value of a registered image in an image retrieval database; and selecting a registered image which satisfies a pre-set condition as a retrieval result of the image to be retrieved. By means of the method, since a depth self-coded network, in the process of performing compressed representation on a local feature, may effectively maintain distance information and discrimination capability between feature values, so that the precision of image retrieval can be effectively improved, and the workload of rearrangement and filtering can be reduced, thereby improving the retrieval efficiency.