Drawing comparison apparatus and method

一种图形、信息处理装置的技术，应用在图像分析、图像数据处理、图像数据处理等方向，能够解决应用限制等问题，达到高精度及高可靠性的效果

Inactive Publication Date: 2005-08-17
FUJITSU LTD
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  • Drawing comparison apparatus and method
  • Drawing comparison apparatus and method
  • Drawing comparison apparatus and method

Examples

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Embodiment Construction

[0029] According to an embodiment of the present invention, the data input to the graphic comparison device is a graphic in a standard image data format such as BMP, JIF, etc., for example, by scanning a hard copy of the graphic, taking a picture, and directly converting the data from the drawing of the CAD file to obtain . For the comparison device according to the embodiment of the present invention, there are further requirements (conditions) on the format of the input graphic data. The following is a binary image without comment text. However, any drawing contains a lot of annotation text to explain the size and process of the part. In addition, image data typically obtained by scanning or using a camera is not a binary image. According to the input conditions, the image obtained by scanning or taking pictures is first converted into a binary image using a binarization device, and then the annotation text in the binary image is split by a text-graphic splitting device, a...

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Abstract

After thinning an input image (drawing), a primitive is extracted. First, a rough primitive is extracted, and then the rough primitive becomes a primitive in a merge-split process according to a greedy strategy. Based on the primitive and the spatial correlation among primitives, an attribute graph describing the contents and the structure of the drawing is generated. The attribute graph is generated using a modified Delaunay triangle and an attribute set. An attribute graph having an attribute set is generated for each of an inquiry drawing and a comparison drawing which are compared with each other, thereby perform drawing comparison.

Description

technical field [0001] The invention relates to a device and method for comparing drawings. Background technique [0002] With the development of IT technology and digital representation in daily life, the effective management and acquisition of graphics is an important problem to be solved. According to statistics, in the early 1990s, the number of graphics in the United States and Canada alone reached 3.5 billion, and about 2600 new graphics were added every year. The annual cost of arranging, duplicating, accessing, and preparing graphics for distribution exceeds $1 billion. More recently, a number of people have begun to study the electronic management of graphics, specifically through the automatic generation and recognition of DAC files from hard-copy graphics, to improve efficiency and reduce maintenance costs. Especially in this method, graphs similar to the query graph are automatically extracted from the database. Graphics are retrieved by comparing their conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F15/80G06F17/30G06T1/00G06T7/60G06V10/426G09G5/00
CPCG06F17/30259G06K9/469Y10S707/99933G06K9/4638Y10S707/99937G06F16/5854G06V10/457G06V10/426
Inventor 刘汝杰马场孝之远藤进椎谷秀一上原佑介增本大器
Owner FUJITSU LTD
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