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Image signature generating method and image verifying method and device

An image signature and image technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as the uselessness of signature technology

Active Publication Date: 2014-06-18
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above factors have made signature technologies like MD5 useless

Method used

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  • Image signature generating method and image verifying method and device
  • Image signature generating method and image verifying method and device
  • Image signature generating method and image verifying method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0086] In the field of image content analysis for massive data, there are currently two contradictory problems as follows:

[0087] On the one hand, the visual features contained in the image itself are extremely rich, and it is difficult to describe it objectively and accurately in text. A more adequate description often involves very complex algorithms, and the generated signature requires a large amount of storage space;

[0088] On the other hand, in the face of massive data, during the entire content analysis process, the time and space requirements are relatively strict. It is necessary to ensure that the image content can be quickly analyzed and the corresponding signature can be generated, and at the same time, it must be guaranteed under the conditions of massive data. Next, different signatures can be verified to determine whether they are duplicated.

[0089] The embodiment of the present application fully considers the above problems. When generating an image signa...

Embodiment 2

[0104] This embodiment provides an image verification method based on the image signature generation method of the foregoing embodiments, such as figure 2 As shown, the image verification method of the present embodiment includes the following main steps:

[0105] Step 21, obtaining multiple types of feature information in the image signature to be verified, and corresponding feature information in the source image signature;

[0106] The signatures of the image to be verified and the source image are both generated according to the image signature generation method described in the first embodiment above.

[0107] The source image may be an image stored in an image database of a website.

[0108] Step 22, matching the multi-type feature information in the signature of the image to be verified with the corresponding feature information in the signature of the source image;

[0109] Step 23, determine whether the image to be verified is duplicated with the source image, spec...

Embodiment 3

[0112] This embodiment provides an image verification method. Such as image 3 As shown, the image verification method of the present embodiment includes the following main steps:

[0113] Step 31, obtaining multiple types of feature information in the signature of the image to be stored, and corresponding feature information in the signature of the source image in the image database;

[0114] The signatures of the image to be stored and the source image are both generated according to the image signature generation method described in the first embodiment above.

[0115] Step 32, matching the multi-type feature information in the signature of the image to be stored with the corresponding feature information in the signature of the source image;

[0116] Step 33, determine whether the image to be stored is duplicated with the source image, specifically including: if all kinds of feature information match, determine that the image to be stored is duplicated with the source im...

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Abstract

The invention provides an image signature generating method and an image verifying method and device. The image signature generating method comprises the steps that characteristic data of multiclass characteristics of an image are extracted, the multiclass characteristics are divided into at least three classes, including at least one class of overall characteristics and at least one class of local characteristics, the extracted different classes of the characteristics contain different image content information amount, and an image signature is generated based on the extracted characteristic data of the multiclass characteristics. The image signature generating method can fully describe the image content information and save storage space. The image verifying method and the device can effectively avoid the interference of image coding and editing tools on image repeatability judging.

Description

technical field [0001] The present application relates to the technical field of image analysis and processing, in particular to an image signature generation method and an image verification method and device. Background technique [0002] When conducting transactions through websites in e-commerce, repeated distribution of goods is a very prominent problem. The so-called repeated distribution refers to products with the same important product attributes that are sold multiple times using the same sales method (buy it out / auction / group purchase). Among them, important commodity attributes include: commodity image, commodity title, commodity price, commodity description, etc. This problem seriously damages the fairness of online transactions and reduces the efficiency of online information acquisition. [0003] Among the above product attributes, the most difficult to identify and deal with is the repetition of image content. Due to the popularity of various image process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 何成剑薛晖邓宇
Owner ALIBABA GRP HLDG LTD
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