Method for generating image fingerprint and method for searching similar image based on same

An image fingerprint and image generation technology, which is applied in the field of image theft recognition, can solve the problems of low retrieval efficiency of stolen images and time-consuming similar images, and achieve the effect of preventing image theft and efficient identification

Active Publication Date: 2014-04-02
BEIJING 58 INFORMATION TECH
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However, if there are too many fingerprints in the image database, it takes a lot of

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  • Method for generating image fingerprint and method for searching similar image based on same
  • Method for generating image fingerprint and method for searching similar image based on same

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Embodiment Construction

[0024] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0025] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0026] The image piracy identification method of the present invention realizes the basic method of accurate and efficient image piracy identification as follows: for a certain image, first generate a self-defined precise image fingerprint, then obtain the fingerprint fragment of the finger...

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Abstract

The invention provides a method for generating an image fingerprint and a method for searching similar images and recognizing image embezzlement. The method is characterized in that an image is provided with M rows and N columns of pixels, and comprises the following steps of a) for each pixel point Xij in the image, i=2, 3,...M, j=2, 3,...N, comparing a gray value of the pixel point with that of a left pixel point and an upper pixel point of the pixel point, wherein the left pixel refers to the left pixel in the four pixels which are adjacent to and arranged above, below, on the left and on the right of the pixel, and the upper pixel refers to the upper pixel in the four pixels which are adjacent to and arranged above, below, on the left and on the right of the pixel; b) giving a fingerprint value Zij to the pixel pint Xij according to different comparison result; c) combining the fingerprint values Z of each pixel point to obtain a fingerprint of the image with the length of (M-1)*(N-1). By utilizing the image embezzlement recognizing method, the similar image can be precisely and high efficiently recognized, and the image embezzlement behavior can be prevented.

Description

technical field [0001] The invention relates to the field of computer image retrieval, in particular to an image embezzlement identification method. Background technique [0002] With the popularization of digital shooting equipment, digital images have become an important medium for information storage and transmission, and more and more digital images are published on the Internet. In the retrieval process of massive network image data, how to remove duplicate or similar images from the returned retrieval result set to improve retrieval effectiveness has important practical significance. For example, in an online commodity trading platform, users exchange or buy and sell items by posting their own posts. In this free environment, many users post images that do not match the real images of their own items, but steal others’ images. Image, so that it will form a certain deception to people who want to buy this thing. In addition, the images produced in many practical appli...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06K9/62
CPCG06F16/583G06F18/22
Inventor 王永康张美琦张爱华何松张月
Owner BEIJING 58 INFORMATION TECH
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