Design patent graphic retrieval method based on graph Hash

A design patent and graphic technology, which is applied in still image data retrieval, still image data indexing, computing, etc., can solve problems such as difficult to achieve user retrieval effect and low efficiency

Inactive Publication Date: 2017-05-31
HUAIAN HIGH TECH INST OF LANZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the existing patent retrieval methods are basically based on text retrieval, which is inefficient and difficult to achieve user-satisfied retrieval results

Method used

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  • Design patent graphic retrieval method based on graph Hash
  • Design patent graphic retrieval method based on graph Hash
  • Design patent graphic retrieval method based on graph Hash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] (1) The process of establishing the Hash library of design patent graphics

[0036] Step 11, extract feature points:

[0037] A) Obtain the design patent object O, divide it into 32x32, and establish a coordinate system;

[0038] B) Calculate the number n, n of non-white rgb (255,255,255) grid cells in each unit area, and arrange them in reverse order according to n;

[0039] C) Take the top ten cell areas, calculate their center points, and store them in the feature point set Points ([13.57534,5.38446],...,[23.39546,24.0912]) as feature points;

[0040] Step 12, connect the feature points to form a feature line segment:

[0041] Connect the points in the feature point set Points in turn to get the feature line segment set Lines(P 1 P 2 ,..,P 9 P 10 );

[0042] Step 13, calculate the corner angle value of the line segment Line, and perform screening to obtain the angle set Angles(a 1 ,...,a 5 ):

[0043] A) Set i from 3 to 10, respectively calculate the line s...

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Abstract

The invention discloses a design patent graphic retrieval method based on graph Hash. The method comprises the following steps of 1, a building process for a design patent graph Hash library, specifically comprising firstly extracting feature points of design patents in the library, sequentially connecting the feature points to form line segments; computing and screening angle values of corners of the line segments, binding the angle values with the corresponding design patents, storing the bound values into a database, and building the design patent graph Hash library; and 2, a design patent retrieval process, specifically comprising analyzing a retrieval condition of a user, extracting the feature points, sequentially connecting the feature points to form the line segments; computing and screening angle values of corners of the line segments, searching in the design patent graph Hash library according to the extracted angle value; and arranging search results in an inverted order, and displaying the arranged results to the user. According to the method provided by the invention, retrieval of the design patent can be effectively achieved in the case of ensuring efficiency.

Description

technical field [0001] The invention belongs to the field of graphic retrieval, in particular to a graphic Hash-based method for graphic retrieval of design patents. Background technique [0002] Patents have increasingly become the core element of corporate competitiveness. How to quickly retrieve patents and use them to drive corporate innovation is a very important issue. However, at present, the existing patent retrieval methods are basically based on text retrieval, which is inefficient and difficult to achieve satisfactory retrieval results for users. For this reason, this patent intends to learn from the advantages of the unique identification code of graphic Hash, and use graphic Hash for design patent retrieval, so as to realize a graphic HASH-based design patent graphic retrieval method that takes into account both efficiency and accuracy. Contents of the invention [0003] The purpose of the present invention is: based on the advantages of the graphic Hash uniq...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F17/30
CPCG06F16/51G06F16/583
Inventor董翔蒋伟
OwnerHUAIAN HIGH TECH INST OF LANZHOU UNIV