CN114463774A - Intelligent identification method for picture of engineering drawing - Google Patents
Intelligent identification method for picture of engineering drawing Download PDFInfo
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- CN114463774A CN114463774A CN202210181221.8A CN202210181221A CN114463774A CN 114463774 A CN114463774 A CN 114463774A CN 202210181221 A CN202210181221 A CN 202210181221A CN 114463774 A CN114463774 A CN 114463774A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/24—Classification techniques
Abstract
The invention discloses an intelligent identification method for the picture of an engineering drawing, belonging to the technical field of engineering drawing identification; the method comprises the following steps: receiving a non-standard engineering drawing, and judging whether the non-standard engineering drawing is a picture frame PDF file; acquiring size data, and adjusting the engineering drawing according to the size data; determining a non-standard engineering drawing sheet according to the size data; determining the lengthening proportion of the non-standard engineering drawing according to the size data; the invention aims to determine the direction of a drawing, so that the direction of a signature can be intelligently adjusted according to the direction of the drawing when the on-line signature is carried out; determining the size of a drawing, so that the position of a signature can be conveniently positioned according to the standard size of the drawing during online signature; the size identification and signature processing of any non-label paper are solved, and the sizes of the non-label paper are different; in order to facilitate the electronic signature of any non-labeled drawing, the processing of the invention can improve the accuracy of the electronic signature and accelerate the efficiency of the signature.
Description
Technical Field
The invention relates to the technical field of engineering drawing identification, in particular to an intelligent identification method for the picture width of an engineering drawing.
Background
Engineering drawings are technical documents used by the engineering community to accurately express the shape, size and related technical requirements of objects. The design, manufacture and construction, use and maintenance of all modern products and equipment such as machines, instruments, engineering buildings and the like are realized through patterns. The designer expresses design intentions and requirements through patterns, the manufacturer understands the design requirements and organizes production processing through the patterns, and the user knows the product structure and performance, correct use method and maintenance method according to the patterns. Therefore, the drawings, like characters and numbers, are one of important tools for expressing design intentions, recording inspiration of innovative ideas and communicating technical ideas, and are known as technical languages in the engineering world, and engineers must be skilled in the languages.
However, non-standard drawing paper is frequently used in the conventional design at present, and the non-standard drawing paper is not a drawing paper of national standard or international standard during drawing. The standard drawing can quickly identify and position the position of the signature in the electronic signature, but the non-label drawing is difficult to realize the function, mainly because the position of the signature is possibly disordered if the non-label drawing frame sizes cannot be intelligently identified and positioned in the electronic signature; and the frame is also divided into transverse or longitudinal signatures, which are also needed to be identified before electronic signatures, so that the problem of signature disorder is prevented. Therefore, the applicant provides an intelligent identification method for the map sheet of the engineering drawing, which is used for solving the identification problem of the non-standard drawing map sheet.
Disclosure of Invention
Technical scheme (I)
The invention is realized by the following technical scheme: an intelligent identification method for the picture of an engineering drawing comprises the following steps:
receiving a non-standard engineering drawing, and judging whether the non-standard engineering drawing is a picture frame PDF file;
acquiring size data, and adjusting the engineering drawing according to the size data;
determining a non-standard engineering drawing sheet according to the size data;
and determining the lengthening proportion of the non-standard engineering drawing according to the size data.
As a further explanation of the above scheme, the size data includes length data, width data, and rotation angle data;
the length data is the transverse size of the non-standard engineering drawing;
and the width data is the axial size of the non-standard engineering drawing.
As a further explanation of the above scheme, the specific adjustment of the engineering drawing according to the size data is as follows:
and restoring the coordinate system according to the rotation angle.
As a further explanation of the above scheme, the specific non-standard engineering drawing sheet is determined according to the size data:
respectively carrying out difference between the non-standard engineering drawing size data and the standard sizes of all the drawings to obtain absolute values;
and selecting the map sheet corresponding to the minimum numerical value of the absolute value as the map sheet of the non-standard engineering drawing.
As a further illustration of the above solution, the diagram includes: a0, A1, A2, A3 and A4.
As a further explanation of the above scheme, the specific lengthening proportion of the non-standard engineering drawing is determined according to the size data:
making a difference between the size data of the non-standard engineering drawing and the standard size of the drawing sheet and taking an absolute value;
dividing the difference result by the standard size of the map sheet to obtain a value A;
the value A and the lengthening proportion value are subjected to difference, and an absolute value is obtained to obtain a value T;
and comparing the T value with a threshold value to obtain a comparison result, and matching the lengthening proportion.
As a further explanation of the above scheme, after determining the non-standard engineering drawing lengthening proportion according to the size data, the method further includes:
if no matched lengthening proportion exists, returning the drawing;
otherwise, storing the drawing according to the lengthening proportion.
The invention provides an intelligent identification device for the picture of an engineering drawing, which comprises:
a processing unit: judging the horizontal direction or the vertical direction of the engineering drawing according to the size data; classifying the non-standard engineering drawings according to the size data; comparing the size data of the non-standard engineering drawings with the classified standard sizes;
an acquisition unit: for receiving any non-label paper; acquiring non-standard engineering drawing size data; generating an electronic drawing path and an output path;
a display unit: the system is used for previewing the file names, the relative paths, the size data and the rotating angles of the non-standard drawing paper and the non-standard drawing paper;
a storage unit: used for storing non-standard drawing paper and classified catalogue;
a feedback unit: and feeding back the drawing with unqualified comparison.
The invention provides an intelligent map identification device for engineering drawings, which comprises a processor, a memory and a computer program stored in the memory, wherein the computer program can be executed by the processor to realize the intelligent map identification method for the engineering drawings.
The invention provides a computer-readable storage medium which comprises a stored computer program, wherein when the computer program runs, equipment where the computer-readable storage medium is located is controlled to execute an intelligent map identification method of an engineering drawing.
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
the invention aims to solve the problems that no error occurs in the signature position during on-line signature, and the signature position is possibly disordered if the non-standard picture frame sizes cannot be intelligently identified and positioned; and frames are further divided into horizontal or vertical signatures. The above steps are therefore aimed at two aspects:
1) the direction of the drawing is determined, so that the direction of the signature can be intelligently adjusted according to the direction of the drawing when the on-line signature is carried out, and errors are prevented;
2) the size identification and signature processing of any non-marking paper are solved; the size of the non-standard drawing paper is different for different drawing persons, and the size of the non-standard drawing paper is greatly changed from the drawing of standard size; therefore, in order to facilitate the electronic signature of any non-labeled drawing, the invention can greatly improve the accuracy of the electronic signature and accelerate the efficiency of the signature.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Examples
The present embodiment takes PDF drawing as an example for explanation.
Receiving a non-standard engineering drawing to obtain size data; in this embodiment, the receiving mode of the non-standard drawing is performed in a computer path mode;
the input path can be determined in software, and PDF files under the path can be automatically read by the software;
or the PDF drawing is imported into the software in a manual adding mode.
After receiving the PDF drawing, firstly, judging whether the PDF drawing is a picture frame PDF file, wherein the specific judgment method is based on whether the received PDF drawing is a single page, and if not, the received PDF drawing is a non-picture frame PDF.
And secondly, acquiring size data of the PDF document, including length data, width data and rotation angle data. The length data is the transverse size of the non-standard engineering drawing; and the width data is the axial size of the non-standard engineering drawing. And adjusting the engineering drawing according to the size data, and specifically restoring the coordinate system according to the rotation angle.
In the embodiment, the coordinate system is restored according to the rotation angle to be used for obtaining the angle of the non-transverse drawing; .
If the rotation angle is 90 degrees according to the rotation angle, clockwise rotating by 90 degrees to restore the coordinate system; and if the rotation angle is-90 degrees, rotating the coordinate system by 90 degrees anticlockwise to restore the coordinate system. It should be further noted that the purpose of this step is to judge the horizontal and vertical directions of the drawing.
Determining the specific drawing of the non-standard engineering drawing according to the size data:
respectively carrying out difference between the non-standard engineering drawing size data and all drawing standard sizes to obtain absolute values;
and selecting the numerical value with the minimum absolute value as the map sheet of the non-standard engineering drawing.
The map includes: a0, A1, A2, A3 and A4.
Taking the transverse drawings as an example, the dimensions (length, width/cm) of each drawing are as follows:
A0：121.986*87.990；
A1：87.990*61.993；
A2：61.993*43.995；
A3：42.011*29.700；
A4：22.097*31.796。
the difference of the vertical drawings is only that the length and width data are exchanged, and the details are not repeated here.
Assuming that the size of a transverse non-marking drawing is 121.889 × 42.995, the length and width data and the drawing data are subtracted to obtain absolute values, and finally the minimum value of the obtained absolute values is: absolute value of length error 1.003; the absolute value of the width error is 1; the map sheet matched with the graph is A2;
the comparison between the size data of the non-standard engineering drawing and the standard size of the drawing sheet is as follows:
making a difference between the size data of the non-standard engineering drawing and the standard size of the drawing sheet and taking an absolute value;
dividing the difference result by the standard size of the map sheet to obtain a value A;
the value A and the lengthening proportion value are subjected to difference, and an absolute value is obtained to obtain a value T;
and comparing the T value with a threshold value to obtain a comparison result, and matching the lengthening proportion.
Assuming that the size of a non-marking paper is 121.889mm 42.995mm, since the drawing is adjusted, the width data of the non-marking paper is subtracted from the width data of the drawing to obtain absolute value data, and finally the minimum value of the absolute value is obtained as follows: the absolute value of the width error is 1; the map sheet matched with the graph is A2: 61.993mm 43.995 mm;
dividing the difference result by the standard size of the map sheet to obtain a value A; the T values were obtained as follows:
Awidth of＝1/43.995≈0.023；
The drawing figures are enlarged in scale and include: 0. 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875, 1;
Awidth ofRespectively subtracting the lengthening proportion to obtain absolute values: t ═ AWidth of-elongation ratio |;
setting a threshold value to be 0.05, and if T is less than 0.05, determining the lengthening proportion of the drawing.
Obtaining a value of 0.023-0| ═ 0.023 < 0.05; the lengthening ratio of the non-standard drawing matching is determined to be 0. Then, classified storage is carried out according to the determined lengthening proportion; the classification includes: a0, a0+0.5, a0+0.25, a0+0.75, a0+0.125, a0+0.375, a0+0.625, a0+0.875, a0+1, a1, a1+0.5, a1+0.25, a1+0.75, a1+0.125, a1+0.375, a1+0.625, a1+0.875, a1+1, a2, a2+0.5, a2+0.25, a2+0.75, a2+0.125, a2+0.375, a2+0.625, a2+0.875, a2+1, A3, a 4.
And if the non-standard drawing is matched with the lengthening proportion without matching, returning the drawing, and modifying the non-standard drawing by a drafter of the drawing after returning. It should be further explained that if the length proportion without matching occurs, a problem is generally set when the drawing is derived by a drawing person, and the drawing person is required to derive the drawing again. When the T value is compared with the threshold to obtain the comparison result, the calculated result needs to be compared with the threshold according to the sequence of 0, 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875, and 1 until the matched lengthening ratio is obtained.
It should be further noted that the above steps are aimed at solving the problem that no error occurs in the position of the signature during online signature, and if intelligent identification and positioning cannot be performed on the sizes of these non-standard frames, the position of the signature may be disordered; and frames are further divided into horizontal or vertical signatures. The above steps are therefore aimed at two aspects:
1) the direction of the drawing is determined, so that the direction of the signature can be intelligently adjusted according to the direction of the drawing when the on-line signature is carried out, and errors are prevented;
2) the size identification and signature processing of any non-marking paper are solved; the size of the non-standard drawing paper is different for different drawing persons, and the size of the non-standard drawing paper is greatly changed from the drawing of standard size; therefore, in order to facilitate the electronic signature of any non-labeled drawing, the steps are adopted for processing, so that the accuracy of the electronic signature can be greatly improved, and the signature efficiency is accelerated.
The invention provides an intelligent identification device for the picture of an engineering drawing, which comprises:
a processing unit: judging the horizontal direction or the vertical direction of the engineering drawing according to the size data; classifying the non-standard engineering drawings according to the size data; comparing the size data of the non-standard engineering drawings with the classified standard sizes;
an acquisition unit: for receiving any non-label paper; acquiring non-standard engineering drawing size data; generating an electronic drawing path and an output path;
a display unit: the system is used for previewing the file names, the relative paths, the size data and the rotating angles of the non-standard drawing paper and the non-standard drawing paper;
a storage unit: used for storing non-standard drawing paper and classified catalogue;
a feedback unit: and feeding back the drawing with unqualified comparison.
The invention provides an intelligent map identification device for engineering drawings, which comprises a processor, a memory and a computer program stored in the memory, wherein the computer program can be executed by the processor to realize the intelligent map identification method for the engineering drawings.
The invention provides a computer-readable storage medium, which comprises a stored computer program, wherein when the computer program runs, equipment where the computer-readable storage medium is located is controlled to execute an intelligent map identification method of an engineering drawing.
Illustratively, the computer program may be divided into one or more units, which are stored in the memory and executed by the processor to accomplish the present invention. The one or more units can be a series of instruction segments of the computer program capable of completing specific functions, and the instruction segments are used for describing the execution process of the computer program in the picture intelligent identification device of the engineering drawing.
The intelligent map identification device for the engineering drawing can comprise but is not limited to a processor and a memory. It will be understood by those skilled in the art that the schematic diagram is merely an example of the intelligent identification device for the drawing of engineering drawings, and does not constitute a limitation on the intelligent identification device for the drawing of engineering drawings, and may include more or fewer components than those shown in the schematic diagram, or some components may be combined, or different components may be included, for example, the intelligent identification device for the drawing of engineering drawings may further include an input and output device, a network access device, a bus, and the like.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general processor can be a microprocessor or the processor can also be any conventional processor and the like, and the control center of the intelligent drawing identification equipment of the engineering drawing utilizes various interfaces and lines to connect all parts of the intelligent drawing identification equipment of the whole engineering drawing.
The memory can be used for storing the computer program and/or the module, and the processor realizes various functions of the intelligent picture identification device of the engineering drawing by running or executing the computer program and/or the module stored in the memory and calling the data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The integrated unit of the intelligent image identification device of the engineering drawing can be stored in a computer readable storage medium if the integrated unit is realized in the form of a software functional unit and is sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc.
The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The embodiments in the above embodiments can be further combined or replaced, and the embodiments are only used for describing the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various changes and modifications made to the technical solution of the present invention by those skilled in the art without departing from the design idea of the present invention belong to the protection scope of the present invention.
Claims (10)
1. An intelligent identification method for the picture of an engineering drawing is characterized by comprising the following steps:
receiving a non-standard engineering drawing, and judging whether the non-standard engineering drawing is a picture frame PDF file;
acquiring size data, and adjusting the engineering drawing according to the size data;
determining a non-standard engineering drawing sheet according to the size data;
and determining the lengthening proportion of the non-standard engineering drawing according to the size data.
2. The intelligent identification method for the picture width of the engineering drawing according to claim 1,
the size data comprises length data, width data and rotation angle data;
the length data is the transverse size of the non-standard engineering drawing;
and the width data is the axial size of the non-standard engineering drawing.
3. The intelligent identification method for the picture width of the engineering drawing according to claim 2,
the specific adjustment of the engineering drawing according to the size data is as follows:
and restoring the coordinate system according to the rotation angle.
4. The intelligent identification method for the picture width of the engineering drawing according to claim 1,
the specific non-standard engineering drawing is determined according to the size data:
respectively carrying out difference between the non-standard engineering drawing size data and the standard sizes of all the drawings to obtain absolute values;
and selecting the map sheet corresponding to the minimum numerical value of the absolute value as the map sheet of the non-standard engineering drawing.
5. The intelligent identification method for the picture width of the engineering drawing according to claim 1,
the map sheet comprises: a0, A1, A2, A3 and A4.
6. The intelligent identification method for the picture width of the engineering drawing according to claim 1,
the specific lengthening proportion of the non-standard engineering drawing is determined according to the size data:
making a difference between the size data of the non-standard engineering drawing and the standard size of the drawing sheet and taking an absolute value;
dividing the difference result by the standard size of the map sheet to obtain a value A;
the value A and the lengthening proportion value are subjected to difference, and an absolute value is obtained to obtain a value T;
and comparing the T value with a threshold value to obtain a comparison result, and matching the lengthening proportion.
7. The intelligent identification method for the picture width of the engineering drawing according to claim 6,
after the non-standard engineering drawing lengthening proportion is determined according to the size data, the method further comprises the following steps:
if no matched lengthening proportion exists, returning the drawing;
otherwise, storing the drawing according to the lengthening proportion.
8. The utility model provides an engineering drawing's picture intelligent recognition device which characterized in that:
the device comprises:
a processing unit: judging the horizontal direction or the vertical direction of the engineering drawing according to the size data; classifying the non-standard engineering drawings according to the size data; comparing the size data of the non-standard engineering drawings with the classified standard sizes;
an acquisition unit: for receiving any non-label paper; acquiring non-standard engineering drawing size data; generating an electronic drawing path and an output path;
a display unit: the system is used for previewing the file names, the relative paths, the size data and the rotating angles of the non-standard drawing paper and the non-standard drawing paper;
a storage unit: used for storing non-standard drawing paper and classified catalogue;
a feedback unit: and feeding back the drawing with unqualified comparison.
9. The utility model provides an engineering drawing's picture width of cloth intelligent recognition equipment which characterized in that: the intelligent identification method comprises a processor, a memory and a computer program stored in the memory, wherein the computer program can be executed by the processor to realize the intelligent identification method for the drawings of the engineering drawings according to any one of claims 1 to 7.
10. A computer-readable storage medium, comprising a stored computer program, wherein when the computer program runs, the computer-readable storage medium controls a device to execute the method for intelligently identifying the map width of an engineering drawing according to any one of claims 1 to 7.
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| CN116304266A (en) * | 2023-03-03 | 2023-06-23 | 苏州工业园区航星信息技术服务有限公司 | File management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116304266A (en) * | 2023-03-03 | 2023-06-23 | 苏州工业园区航星信息技术服务有限公司 | File management system |
| CN116304266B (en) * | 2023-03-03 | 2024-02-27 | 苏州工业园区航星信息技术服务有限公司 | File management system |
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