CN113674202A - Tracking scanning method and system for displaying product deviation in real time - Google Patents
Tracking scanning method and system for displaying product deviation in real time Download PDFInfo
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/001—Industrial image inspection using an image reference approach
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
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Abstract
The invention provides a tracking scanning method and a system for displaying product deviation in real time, wherein the method comprises the following steps: acquiring the datum scanning data of a product, aligning the datum part of the product with the three-dimensional design drawing of the product, calculating the datum scanning data deviation, and displaying the datum scanning data deviation through different colors; acquiring the residual scanning data of the product, calculating the deviation of the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors; and (5) deriving a product deviation color chart. Therefore, the product deviation can be displayed in real time, the product problems can be found in time in the production process, and the improvement of the production process and the repair of the product can be conveniently guided.
Description
Technical Field
The invention belongs to the technical field of three-dimensional scanning, and particularly relates to a tracking scanning method and a tracking scanning system for displaying product deviation in real time.
Background
The high-end manufacturing industry has higher requirements on product quality, the measurement and detection of industrial products are also higher requirements, and the high-end manufacturing system is light, portable and capable of carrying out real-time intelligent processing and is one of the development directions of modern high-end manufacturing. If the deviation of the measured object can be directly displayed in the scanning process, the intelligent real-time performance in the measuring process is improved.
Currently, in measurement and detection of industrial products, after a product is completely scanned to obtain three-dimensional data, deviation color difference maps of the aligned three-dimensional data are obtained by using detection software and a design model, whether the product is qualified or not is judged according to the color difference maps, and repair of unqualified products is guided.
Disclosure of Invention
In view of this, embodiments of the present invention provide a tracking scanning method and system for displaying product deviation in real time, so as to solve the problem of hysteresis in product detection.
In a first aspect of the embodiments of the present invention, a tracking and scanning method for displaying product deviation in real time is provided, including:
acquiring the datum scanning data of a product, aligning the datum part of the product with the three-dimensional design drawing of the product, calculating the datum scanning data deviation, and displaying the datum scanning data deviation through different colors;
and acquiring the residual scanning data of the product, calculating the deviation of the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors to derive a product deviation color drawing.
In a second aspect of the embodiments of the present invention, there is provided a tracking and scanning system for displaying deviation of a product in real time, including:
the first deviation calculation module is used for acquiring the reference scanning data of the product, calculating the deviation of the reference scanning data after aligning the reference part of the product with the three-dimensional design drawing of the product, and displaying the deviation of the reference scanning data through different colors;
a second deviation calculating module for obtaining the residual scanning data of the product, calculating the deviation between the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the alignment of the reference part of the product, and displaying the deviation of the residual scanning data by different colors
And the derivation module is used for deriving the product deviation color chart.
In a third aspect of the embodiments of the present invention, there is provided an apparatus, including a memory, a processor, and a computer program stored in the memory and executable by the processor, where the processor executes the computer program to implement the steps of the method according to the first aspect of the embodiments of the present invention.
In a fourth aspect of the embodiments of the present invention, a computer-readable storage medium is provided, which stores a computer program, which when executed by a processor implements the steps of the method provided by the first aspect of the embodiments of the present invention.
In the embodiment of the invention, the product is scanned in real time, the color deviation of the reference part and the color deviation of the other parts of the product are respectively calculated, the color deviation is displayed, and the deviation color chart is derived, so that the product deviation can be displayed in real time, the problems can be found in the scanning process in time, the production improvement and the product repair can be conveniently guided, and the problem of product detection lag is solved. Meanwhile, the report can be automatically generated without the help of detection software, and the detection efficiency is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a tracking and scanning method for displaying deviation of a product in real time according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a tracker and a spherical scanner provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a tracking and scanning system for displaying deviation of a product in real time according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification or claims and in the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method or system, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements. In addition, "first" and "second" are used to distinguish different objects, and are not used to describe a specific order.
Referring to fig. 1, a schematic flow chart of a tracking and scanning method for displaying product deviation in real time according to an embodiment of the present invention includes:
s101, acquiring reference scanning data of a product, aligning a product reference part with a three-dimensional design drawing of the product, calculating a reference scanning data deviation, and displaying the reference scanning data deviation through different colors;
the scanning data of the product can be obtained by scanning the corresponding industrial product through a scanner, the scanning data of the product generally refers to the scanning data of the surface of the product, and the corresponding three-dimensional model of the product can be obtained by scanning the product through an optical camera.
In one embodiment, the products to be inspected are tracked and scanned in real time by a tracker and a spherical scanner. As shown in fig. 2, fig. 2(a) is a tracker, fig. 2(b) is a spherical scanning gun, the tracker and the spherical scanner are both composed of binocular cameras, the tracker is used for positioning a product, the spherical scanner is used for scanning the product, and a corresponding space three-dimensional model is established based on scanning data.
The reference scan data refers to reference characteristics of product modeling, is used for assisting in building three-dimensional characteristics, and generally comprises a reference plane, a reference axis, a reference point, a reference curve and the like. The method comprises the steps of scanning the surface of a product to obtain datum feature data during three-dimensional modeling of the product, and aligning a three-dimensional model obtained through scanning with a three-dimensional design drawing (such as a CAD drawing) of the product according to the datum features of the product.
And drawing a reference data deviation graph through different colors according to the difference between the reference scanning data and the reference data of the three-dimensional design graph of the product. Wherein, the different deviation values of the reference data correspond to different RGB color values.
And acquiring a conversion matrix of a product scanning coordinate system and a product three-dimensional design drawing coordinate system by aligning the product reference part with the product three-dimensional design drawing. According to the standard requirement of a product, scanning of a standard part is firstly carried out at the scanning starting stage, standard characteristics are extracted based on standard scanning data, and the standard data and the three-dimensional design drawing data are aligned, so that a conversion matrix of a scanning coordinate system and a three-dimensional design drawing coordinate system is obtained.
In one embodiment, in the color difference calculation display process, a color value corresponding to the maximum deviation is preset, and the product scanning data is obtained in real time and converted into a product three-dimensional design drawing coordinate system.
Further, reversely extracting three-dimensional design drawing data from the scanning data of the newly added product in real time to perform deviation calculation; and selecting different color RGB values according to the deviation value to draw, and obtaining a deviation color chart of the real-time newly added data.
S102, acquiring residual scanning data of the product, calculating the deviation of the residual scanning data and a three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors;
the residual scanning data refers to product scanning data except the reference scanning data in the scanning data, the reference scanning data are aligned, and on the basis, the deviation of the residual scanning data of the product is calculated.
Similarly, for the rest scanning data, reversely extracting the three-dimensional design drawing data of the newly added real-time scanning data for deviation calculation, and selecting different color RGB values according to the deviation value for drawing to obtain a deviation color drawing of the newly added real-time data.
It will be appreciated that the off-set colour map of the reference scan data is generally different from the off-set colour map of the remainder of the scan data, and that the colour values selected differ to allow discrimination.
And S103, deriving a product deviation color chart.
For a product scanned in real time, a corresponding deviation color chart can be derived in real time through deviation calculation and deviation color chart drawing. In the deviation color chart, the difference between the product reference part and the product three-dimensional design chart and the difference between the product reference part and the product residual part can be visually displayed.
In the embodiment, the product deviation can be displayed in real time based on the product deviation color chart drawn by real-time scanning, the product problem can be found in time in the scanning process, and the guidance of the improvement of production and the repair of the product are facilitated.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 3 is a schematic structural diagram of a tracking and scanning system for displaying product deviation in real time according to an embodiment of the present invention, where the system includes:
the first deviation calculating module 310 is configured to obtain reference scanning data of a product, align a reference portion of the product with a three-dimensional design drawing of the product, calculate a deviation of the reference scanning data, and display the deviation of the reference scanning data in different colors;
optionally, the product to be detected is tracked and scanned in real time by a tracker and a spherical scanner.
And acquiring a conversion matrix of a product scanning coordinate system and a product three-dimensional design drawing coordinate system by aligning the product reference part with the product three-dimensional design drawing.
And presetting a color value corresponding to the maximum deviation, and acquiring product scanning data in real time and converting the product scanning data into a product three-dimensional design drawing coordinate system.
Further, reversely extracting three-dimensional design drawing data from the scanning data of the newly added product in real time to perform deviation calculation; and selecting different color RGB values according to the deviation value to draw, and obtaining a deviation color chart of the real-time newly added data.
The second deviation calculation module 320 is configured to obtain the remaining scan data of the product, calculate a deviation between the remaining scan data and the three-dimensional design drawing of the product based on the remaining scan data after the product reference part is aligned, and display the deviation of the remaining scan data by different colors;
and the derivation module 330 is configured to derive a product deviation color chart.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the apparatus and the modules described above may refer to corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. The electronic device is used for displaying the scanning deviation of the product, and is usually a computer. As shown in fig. 4, the electronic apparatus 4 of this embodiment includes: a memory 410, a processor 420, and a system bus 430, the memory 410 including an executable program 4101 stored thereon, it being understood by those skilled in the art that the electronic device configuration shown in fig. 4 does not constitute a limitation of electronic devices and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
The following describes each component of the electronic device in detail with reference to fig. 4:
the memory 410 may be used to store software programs and modules, and the processor 420 executes various functional applications and data processing of the electronic device by operating the software programs and modules stored in the memory 410. The memory 410 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 cache data) created according to the use of the electronic device, and the like. Further, the memory 410 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
An executable program 4101 of a network request method is contained on the memory 410, the executable program 4101 may be divided into one or more modules/units, which are stored in the memory 410 and executed by the processor 420 to realize calculation, drawing and derivation of product scan data deviation, and the one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used for describing the execution process of the computer program 4101 in the electronic device 4. For example, the computer program 4101 may be divided into a first deviation calculation module, a second deviation calculation module and a derivation module.
The processor 420 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, performs various functions of the electronic device and processes data by operating or executing software programs and/or modules stored in the memory 410 and calling data stored in the memory 410, thereby performing overall status monitoring of the electronic device. Alternatively, processor 420 may include one or more processing units; preferably, the processor 420 may integrate an application processor, which mainly handles operating systems, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 420.
The system bus 430 is used to connect functional units inside the computer, and can transmit data information, address information, and control information, and may be, for example, a PCI bus, an ISA bus, a VESA bus, etc. The instructions of the processor 420 are transmitted to the memory 410 through the bus, the memory 410 feeds data back to the processor 420, and the system bus 430 is responsible for data and instruction interaction between the processor 420 and the memory 410. Of course, the system bus 430 may also access other devices such as network interfaces, display devices, and the like.
In this embodiment of the present invention, the executable program executed by the process 420 included in the electronic device includes:
acquiring the datum scanning data of a product, aligning the datum part of the product with the three-dimensional design drawing of the product, calculating the datum scanning data deviation, and displaying the datum scanning data deviation through different colors;
acquiring the residual scanning data of the product, calculating the deviation of the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors;
and (5) deriving a product deviation color chart.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A tracking scanning method for displaying product deviation in real time is characterized by comprising the following steps:
acquiring the datum scanning data of a product, aligning the datum part of the product with the three-dimensional design drawing of the product, calculating the datum scanning data deviation, and displaying the datum scanning data deviation through different colors;
acquiring the residual scanning data of the product, calculating the deviation of the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors;
and (5) deriving a product deviation color chart.
2. The method of claim 1, wherein said obtaining baseline scan data for a product is preceded by:
and tracking and scanning the product to be detected in real time by a tracker and a spherical scanner.
3. The method of claim 1, wherein aligning the product datum portion with the product three-dimensional design drawing comprises:
and aligning the product reference part with the product three-dimensional design drawing to obtain a conversion matrix of a product scanning coordinate system and a product three-dimensional design drawing coordinate system.
4. The method of claim 1, wherein after aligning the product reference portion with the product three-dimensional design drawing, calculating a reference scan data deviation, wherein displaying the reference scan data deviation by different colors comprises:
and presetting a color value corresponding to the maximum deviation, and acquiring product scanning data in real time and converting the product scanning data into a product three-dimensional design drawing coordinate system.
5. The method of claim 4, wherein the real-time acquisition of the product scan data into the product three-dimensional design drawing coordinate system further comprises:
reversely extracting three-dimensional design drawing data from the scanning data of the newly added product in real time to perform deviation calculation;
and selecting different color RGB values according to the deviation value to draw, and obtaining a deviation color chart of the real-time newly added data.
6. A tracking scanning system for real-time display of deviations in a product, comprising:
the first deviation calculation module is used for acquiring the reference scanning data of the product, calculating the deviation of the reference scanning data after aligning the reference part of the product with the three-dimensional design drawing of the product, and displaying the deviation of the reference scanning data through different colors;
the second deviation calculation module is used for acquiring the residual scanning data of the product, calculating the deviation between the residual scanning data and the three-dimensional design drawing of the product based on the residual scanning data after the product reference part is aligned, and displaying the deviation of the residual scanning data through different colors;
and the derivation module is used for deriving the product deviation color chart.
7. The system of claim 6, wherein said aligning the product fiducial with the product three-dimensional design drawing comprises:
and aligning the product reference part with the product three-dimensional design drawing to obtain a conversion matrix of a product scanning coordinate system and a product three-dimensional design drawing coordinate system.
8. The system of claim 6, wherein after aligning the product reference portion with the product three-dimensional design drawing, calculating a reference scan data deviation, wherein displaying the reference scan data deviation by different colors comprises:
and presetting a color value corresponding to the maximum deviation, and acquiring product scanning data in real time and converting the product scanning data into a product three-dimensional design drawing coordinate system.
9. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for tracking and scanning for real-time display of product deviations as claimed in any one of claims 1 to 5 when executing the computer program.
10. A computer-readable storage medium storing a computer program, wherein the computer program is executed to implement the steps of a tracking scanning method for displaying product deviations in real time according to any one of claims 1 to 5.
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