CN117871534A - Test piece color management system based on digital image - Google Patents

Test piece color management system based on digital image Download PDF

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Publication number
CN117871534A
CN117871534A CN202410012371.5A CN202410012371A CN117871534A CN 117871534 A CN117871534 A CN 117871534A CN 202410012371 A CN202410012371 A CN 202410012371A CN 117871534 A CN117871534 A CN 117871534A
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China
Prior art keywords
test piece
studio
miniature
management system
wall
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Pending
Application number
CN202410012371.5A
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Chinese (zh)
Inventor
车昱娇
高魁垠
胡恩来
胡彦平
陈津虎
李海波
李艳喆
潘鑫
李鑫淼
郑嘉裕
朱仪凡
刘佩风
董军超
朱重阳
陈志军
许玉珍
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Beijing Institute of Structure and Environment Engineering
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Beijing Institute of Structure and Environment Engineering
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Application filed by Beijing Institute of Structure and Environment Engineering filed Critical Beijing Institute of Structure and Environment Engineering
Priority to CN202410012371.5A priority Critical patent/CN117871534A/en
Publication of CN117871534A publication Critical patent/CN117871534A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/462—Computing operations in or between colour spaces; Colour management systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Environmental Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

The test piece color management system based on the digital image comprises a test piece placement platform, a test piece storage platform and a test piece storage platform, wherein the test piece placement platform is used for placing a movable slide rail, a miniature studio and a test piece; the movable slide rail is used for installing the shooting camera and marking the installation position of the camera; the LED lamp strip is used for being arranged on the inner wall of the miniature studio and providing a light source for the test piece; the inner wall of the miniature studio is provided with a reflecting material for reflecting a light source emitted by the LED lamp strip; the shooting camera is used for collecting surface corrosion images of the test piece at different moments; and the computer is used for processing the surface corrosion images of the test piece at different moments and managing the digital images. Through the controllable LED lamp area of design luminance, portable slide rail, shading cloth and reflective material, can solve current shooting device light source uncontrollable, shoot the position uncontrollable, inconvenient carry, problem with high costs, can realize that the light source is controllable, shoot the position controllable, portable, with low costs, be applicable to the material test piece color management system who acquires material test piece surface color information.

Description

Test piece color management system based on digital image
Technical Field
The invention belongs to the technical field of reliability tests and tests, and particularly relates to a test piece color management system based on a digital image.
Background
After the material or structure is stored in natural environment or subjected to salt spray test under laboratory conditions, the obtained corrosion image and morphology data are basic conditions for evaluating the corrosion type and corrosion degree of a test piece and researching corrosion mechanism, and extracting characteristic parameters from the corrosion morphology is important for revealing the corrosion mechanism. Therefore, studying the extent of corrosion development is of great importance for predicting corrosion behavior and understanding corrosion mechanism. The traditional method for evaluating the corrosion state of the material is mainly characterized in that the corrosion state is subjected to text description based on appearance inspection or is correspondingly evaluated according to the corrosion property and degree by combining a standard sample graph. The protection rating judging method is a common corrosion judging method, which divides the percentage of the total corrosion area into a plurality of grades according to a certain method, takes a certain grade as a qualification judging basis, and is suitable for evaluating the flat plate sample. Taking steel as an example, the current evaluation of the corrosion grade of carbon steel is mainly carried out by adopting a manual visual inspection method according to GB/T6461-2002 'the rating of samples and test pieces after corrosion test of metals and other inorganic coating layers on a metal matrix', and the detection speed is low and the working strength of detection personnel is high.
At present, the detection technology is developing to an intelligent and portable direction, a corrosion area is distinguished by a threshold segmentation method based on three primary colors, a test piece area is identified by a morphological gradient, an area growth method and the like, and the surface corrosion ratio can be calculated, so that the protection evaluation grade is further calculated. The corrosion degree is detected by a threshold segmentation method based on three primary colors, and the surface morphology of the material is firstly obtained. The corrosion products on the surface of the salt spray test piece are in a vertical and horizontal arrangement, and the analysis of the corrosion degree is further affected by the non-uniformity of light. The existing method for collecting the surface morphology of the material still has the following problems to be solved:
(1) The method is characterized in that a light source which needs to be stabilized is identified by a threshold segmentation method, so that the stability of the color temperature of the light source is ensured as much as possible, and the stability of the brightness of the light source is ensured;
(2) The light source comprises an artificial light source and a natural light source, the artificial light source is controllable, and the natural light source is uncontrollable, so that the influence of the natural light source is reduced to the greatest extent on the premise of ensuring the controllability of the artificial light source, and the stability of the image acquisition effect is benefited;
(3) The test pieces of different materials have different light reflection capacities, the surface morphology of the material photographed by the material with strong reflection capacity under the strong light source is too bright, and the surface morphology of the material photographed by the material with weak reflection capacity under the weak light source is too dark, so that the brightness control of the artificial light source is necessary;
(4) In the process of identifying the test piece area, the test piece is enabled to be as original and not deformed in the lens as much as possible, so that the connecting line between the midpoint of the camera lens and the midpoint of the test piece is as perpendicular to the horizontal plane as possible, the fixed shooting position cannot necessarily meet the shooting requirements of test pieces with various sizes, and the variability of the camera position and the stability of the camera during shooting are particularly important.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides a test piece color management system based on a digital image, and can solve the problems of uncontrollable light source, uncontrollable shooting position, inconvenient carrying of part of shooting devices and high cost of the existing shooting devices.
According to an aspect of the present disclosure, there is provided a test piece color management system based on a digital image, the apparatus including: the device comprises a test piece placing platform, a movable slide rail, an LED lamp strip, a miniature studio, a shooting camera and a computer;
the test piece placing platform is used for placing the movable slide rail, the miniature studio and the test piece;
the movable slide rail is used for installing the shooting camera and marking the installation position of the shooting camera;
the LED lamp strip is used for being arranged on the inner wall of the miniature studio and providing a light source for the test piece;
the inner wall of the miniature studio is provided with a reflecting material for reflecting a light source emitted by the LED lamp strip;
the shooting camera is used for collecting surface corrosion images of the test piece at different moments;
and the computer is used for processing the surface corrosion images of the test piece at different moments and managing the digital images.
In one possible implementation manner, the movable slide rail comprises an X-direction slide rail and a Y-direction slide rail with adjustable positions, and is fixed on the specimen placement platform through screws.
In one possible implementation, the LED light strips have 4 strips, wherein 2 LED light strips are mounted on the top inner wall of the miniature studio, 1 LED light strip is mounted on the left inner wall of the miniature studio, and 1 LED light strip is mounted on the right inner wall of the miniature studio.
In one possible implementation, the positions of the 2 LED light strips on the top inner wall of the miniature studio are centrosymmetric with respect to the center point of the top inner wall of the miniature studio;
the positions of the LED lamp strips arranged on the right inner wall and the left inner wall of the miniature studio are respectively positioned on X-direction symmetry axes of the right inner wall and the left inner wall.
In one possible implementation, the shooting camera is mounted on the Y-direction slide rail by a quick-mounting plate.
In one possible implementation, the specimen placement platform employs a light absorbing material with a solid background.
In one possible implementation, the light source brightness of the LED light strip is adjustable.
In one possible implementation, the photographing camera is an industrial digital CCD camera.
In one possible implementation, if the outer wall of the miniature studio is black light blocking material.
In one possible implementation, when the test piece edge is light, the test piece placement platform uses a dark background material, and when the test piece edge is dark, the test piece placement platform uses a light background material.
The test piece color management system based on digital images of the present disclosure includes: the device comprises a test piece placing platform, a movable slide rail, an LED lamp strip, a miniature studio, a shooting camera and a computer; the test piece placing platform is used for placing the movable slide rail, the miniature studio and the test piece; the movable slide rail is used for installing the shooting camera and marking the installation position of the shooting camera; the LED lamp strip is used for being arranged on the inner wall of the miniature studio and providing a light source for the test piece; the inner wall of the miniature studio is provided with a reflecting material for reflecting a light source emitted by the LED lamp strip; the shooting camera is used for collecting surface corrosion images of the test piece at different moments; and the computer is used for processing the surface corrosion images of the test piece at different moments and managing the digital images. Through the controllable LED lamp area of design luminance, portable slide rail, shading cloth and reflective material, can solve current shooting device light source uncontrollable, shoot the position uncontrollable, inconvenient carry, problem with high costs, can realize that the light source is controllable, shoot the position controllable, portable, with low costs, be applicable to the material test piece color management system who acquires material test piece surface color information.
Drawings
The accompanying drawings are included to provide a further understanding of the technical aspects or prior art of the present application and constitute a part of this specification. The drawings, which are used to illustrate the technical solution of the present application, together with the embodiments of the present application, but do not limit the technical solution of the present application.
FIG. 1 illustrates a block diagram of a digital image based test piece color management system according to an embodiment of the present disclosure;
FIG. 2 illustrates three views of a specimen placement platform according to an embodiment of the present disclosure;
FIG. 3 illustrates an isometric view of a movable slide in accordance with an embodiment of the present disclosure;
FIG. 4 illustrates a physical diagram of a digital image based test piece color management system according to an embodiment of the present disclosure;
FIG. 5 illustrates a schematic view of a digital image-based acquisition of an image of a test piece erosion surface in accordance with an embodiment of the present disclosure.
In the figure: 1 is an X-direction slide rail; 2 is a Y-direction slide rail; 3 is a shooting camera; 4 is an LED lamp strip; 5 is a miniature studio; 6 is a test piece placing platform; 7 is a test piece; 8 is a computer.
Detailed Description
The following will describe embodiments of the present invention in detail with reference to the drawings and examples, thereby solving the technical problems by applying technical means to the present invention, and realizing the corresponding technical effects can be fully understood and implemented accordingly. All the features in the examples and the embodiments of the present application can be combined with each other without conflict, and the formed technical solutions are all within the scope of the present invention.
Additionally, the steps illustrated in the flowcharts of the figures may be performed in a computer, such as a set of computer executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.
FIG. 1 illustrates a block diagram of a digital image based test piece color management system according to an embodiment of the present disclosure. As shown in fig. 1, the apparatus may include: test piece placing platform 6, movable slide rail, LED lamp area 4, miniature studio 5, shooting camera 3 and computer 8.
The test piece placing platform 6 is used for placing the movable sliding rail, the miniature studio 5 and the test piece 7. A movable slide rail for mounting the shooting camera 3 and marking the position of the test piece 7; the LED lamp strip 4 is used for being arranged on the inner wall of the miniature studio 5 and providing a light source for the test piece 7; the inner wall of the miniature studio 5 is provided with a reflecting material for reflecting the light source emitted by the LED lamp strip 4; a shooting camera 3 for collecting the surface corrosion images of the test piece 7 at different moments; and the computer 8 is used for processing the surface corrosion images of the test piece 7 at different moments.
FIG. 2 illustrates three views of a specimen placement platform according to an embodiment of the present disclosure.
The test piece placing platform 6 can adopt a light-absorbing material with a solid background so as to increase the contrast ratio between the background and the test piece 7, thereby being beneficial to the identification of the region of the test piece 7. For example, when the edge of the specimen 7 is light, the specimen placement platform 6 uses a dark background material, and when the edge of the specimen 7 is dark, the specimen placement platform 6 uses a light background material. The specimen placement platform 6 may be square, as shown in fig. 2, the specimen placement platform 6 may be a square platform of 500mm×500mm, and the specimen placement platform 6 may be set according to the specimen size, which is not limited in any way.
Fig. 3 illustrates an isometric view of a movable slide in accordance with an embodiment of the present disclosure.
As shown in fig. 3, the movable slide rail comprises an X-direction slide rail 1 and a Y-direction slide rail 2 with adjustable positions, and is fixed on a specimen placing platform 6 through screws. The movable slide rail is provided with a graduated scale for marking the position information of the test piece 7. The movable slide rail adjusts the positions of the X-direction slide rail 1 and the Y-direction slide rail 2 on the two-dimensional plane through the rotary knob so as to meet shooting requirements of test pieces 7 with different sizes. In addition, when the same test piece 7 is subjected to image acquisition at different moments, the position scale readings of the X-direction slide rail 1 and the Y-direction slide rail 2 are ensured to be unchanged.
In one example, as shown in fig. 1, there may be 4 LED light strips 4. Wherein 2 LED strips 4 are mounted on the top inner wall of the miniature studio 5, and the positions of the 2 LED strips are centrally symmetrical about the center point of the top inner wall of the miniature studio 5. The 1 LED lamp strip 4 is installed on the left inner wall of the miniature studio 5, and the 1 LED lamp strip 4 is positioned on the X-direction symmetry axis of the left inner wall of the miniature studio 5. The 1 LED lamp strip 4 is installed on the right inner wall of the miniature studio 5, and the position of the 1 LED lamp strip 4 is positioned on the X-direction symmetry axis of the right inner wall of the miniature studio 5. The light source brightness of the LED lamp strip 4 can be adjusted to adapt to the test piece 7 with different light reflecting capacities, and the brightness setting of the LED lamp strip 4 is ensured to be unchanged when the same test piece 7 is subjected to image acquisition at different moments.
FIG. 4 illustrates a physical diagram of a digital image based test piece color management system according to an embodiment of the present disclosure.
As shown in fig. 4, the inner wall of the miniature studio 5 may be made of reflective material, so that the light source emitted by the LED strip 4 may be reflected again, so that the light in the shooting area is more uniform. The outer wall of the miniature studio 5 is made of black shading materials, so that the influence of an external natural light source on the acquired image of the surface morphology of the test piece 7 can be greatly reduced.
FIG. 5 illustrates a schematic view of a digital image-based acquisition of an image of a test piece erosion surface in accordance with an embodiment of the present disclosure.
In an example, the photographing camera 3 may be an industrial digital CCD camera, or may be another photographing camera, which is not limited in this regard. As shown in fig. 1, the photographing camera 3 may be mounted on the Y-direction slide rail 2 through a quick mounting plate, and the surface corrosion images of the test piece 7 at different moments as shown in fig. 5 are acquired by setting a focal length, an aperture, a shutter speed, time-lapse photographing, and the like of the photographing camera 3. When image acquisition is performed on the same test piece 7 at different moments, the parameter settings of the photographing camera should be ensured to be unchanged. And the surface corrosion images of the test piece 7 at different moments acquired by the shooting camera 3 are sent to the computer 8, and the computer 8 processes the surface corrosion images of the test piece 7 at different moments through various built-in application software.
For example, when the digital image-based specimen color management system of the present disclosure is utilized to capture a specimen surface corrosion image, the specific procedure is as follows:
1) The movable slide rail is arranged on the test piece placing platform 6 through a screw;
2) The shooting camera 3 is arranged on a Y-direction slide rail 2 of the movable slide rail through a quick mounting plate;
3) 2 LED lamp strips 4 are arranged on the top inner wall of the miniature studio 5, and the installation positions of the 2 lamp strips 4 are centrally symmetrical with respect to the center point of the top inner wall of the miniature studio 5;
4) 1 LED lamp strip 4 is arranged on the left inner wall of the miniature studio 5, and the installation position is positioned on the X-direction symmetry axis of the left inner wall of the miniature studio 5;
5) 1 LED lamp strip 4 is arranged on the right inner wall of the miniature studio 5, and the installation position is positioned on the X-direction symmetry axis of the right inner wall of the miniature studio 5;
6) Arranging the electric wires of the LED lamp strip 4 so as not to shade the lens of the shooting camera 3 and not to influence the movement of the movable slide rail, connecting a power supply, and constructing a physical diagram of the corrosion morphology acquisition device of the test piece 7 as shown in fig. 4;
7) A light absorption cloth with proper color is selected to be placed on the inner wall of the bottom of the miniature studio 5;
8) Adjusting the knob of the movable slide rail until the shooting camera 3 reaches a proper position, and recording the X-direction value d of the slide rail X And Y-direction slide rail value d Y ；
9) Rotating the control knob of the LED lamp strip 4 to enable the light source to reach proper brightness, and recording a numerical value L;
10 Basic settings such as manual focusing mode, grid lines, shooting delay, etc. are performed on the shooting camera 3 as needed;
11 Placing the test piece 7 in the miniature studio 5, observing the position of the test piece 7 by using the shooting camera 3, and moving the position of the test piece 7 or adjusting a movable slide rail knob to enable the test piece 7 to be positioned at the central position of the screen of the shooting camera 3;
12 Parameters such as aperture size, shutter speed, ISO, focal length and the like of the shooting camera 3 are adjusted, so that the image is not too bright or too dark, the image is clear, and the parameter size is recorded;
13 Pressing a shutter of the shooting camera 3 to collect a corrosion image of the surface of a test piece 7 (for example, a certain salt spray test piece), wherein the collected image of the corrosion morphology of the surface of the test piece 7 is shown in fig. 5;
14 Using the shooting camera 3 to shoot a plurality of images for comparing the front and rear surface morphology of the same test piece 7, and ensuring d when the comparison is performed X 、d Y The L and camera parameter settings are unchanged to realize the management of the surface color of the test piece 7.
The test piece color management system based on digital images of the present disclosure includes: the device comprises a test piece placing platform, a movable slide rail, an LED lamp strip, a miniature studio, a shooting camera and a computer; the test piece placing platform is used for placing the movable slide rail, the miniature studio and the test piece; the movable slide rail is used for installing the shooting camera and marking the installation position of the shooting camera; the LED lamp strip is used for being arranged on the inner wall of the miniature studio and providing a light source for the test piece; the inner wall of the miniature studio is provided with a reflecting material for reflecting a light source emitted by the LED lamp strip; the shooting camera is used for collecting surface corrosion images of the test piece at different moments; and the computer is used for processing the surface corrosion images of the test piece at different moments and managing the digital images. The stability of the color temperature and the brightness of the light source and the variability of the brightness are realized by designing the LED lamp strip with controllable brightness; the movable sliding rail is designed, so that the mobility and the stability of the shooting camera on a two-dimensional plane are realized; the influence of the natural light source on the surface morphology image is minimized by designing the shading cloth; by designing the reflective material, the light in the shooting space is more sufficient and uniform. The novel device can solve the problems of uncontrollable light source, uncontrollable shooting position, inconvenient carrying and high cost of the existing shooting device, can realize controllable light source, controllable shooting position, convenient carrying, low cost and operability, and provides a novel device for collecting and managing the surface color of a material test piece.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. A digital image-based test piece color management system, the system comprising: the device comprises a test piece placing platform, a movable slide rail, an LED lamp strip, a miniature studio, a shooting camera and a computer;
the test piece placing platform is used for placing the movable slide rail, the miniature studio and the test piece;
the movable slide rail is used for installing the shooting camera and marking the installation position of the shooting camera;
the LED lamp strip is used for being arranged on the inner wall of the miniature studio and providing a light source for the test piece;
the inner wall of the miniature studio is provided with a reflecting material for reflecting a light source emitted by the LED lamp strip;
the shooting camera is used for collecting surface corrosion images of the test piece at different moments;
and the computer is used for processing the surface corrosion images of the test piece at different moments and managing the digital images.
2. The specimen color management system of claim 1, wherein the movable slide includes an X-direction slide and a Y-direction slide with adjustable positions and is secured to the specimen placement platform by screws.
3. The specimen color management system of claim 2, wherein said LED strips have 4 strips, wherein 2 LED strips are mounted on a top interior wall of said miniature studio, 1 LED strip is mounted on a left interior wall of said miniature studio, and 1 LED strip is mounted on a right interior wall of said miniature studio.
4. The test piece color management system of claim 3, wherein the locations of the 2 LED strips of the top interior wall of the miniature studio are centered about a top interior wall center point of the miniature studio;
the positions of the LED lamp strips arranged on the right inner wall and the left inner wall of the miniature studio are respectively positioned on X-direction symmetry axes of the right inner wall and the left inner wall.
5. The specimen color management system of claim 2, wherein the camera is mounted on the Y-rail by a quick mount plate.
6. The test piece color management system of claim 1, wherein said test piece placement platform is a solid background light absorbing material.
7. The test piece color management system of claim 1, wherein the light source brightness of the LED light strip is adjustable.
8. The specimen color management system of claim 1, wherein the photographic camera is an industrial digital CCD camera.
9. The specimen color management system of claim 1, wherein an outer wall of said miniature studio is black shading material.
10. The specimen color management system of claim 6, wherein the specimen placement platform employs a dark background material when the specimen edge is light and a light background material when the specimen edge is dark.
CN202410012371.5A 2024-01-04 2024-01-04 Test piece color management system based on digital image Pending CN117871534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410012371.5A CN117871534A (en) 2024-01-04 2024-01-04 Test piece color management system based on digital image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410012371.5A CN117871534A (en) 2024-01-04 2024-01-04 Test piece color management system based on digital image

Publications (1)

Publication Number Publication Date
CN117871534A true CN117871534A (en) 2024-04-12

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Family Applications (1)

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CN202410012371.5A Pending CN117871534A (en) 2024-01-04 2024-01-04 Test piece color management system based on digital image

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CN (1) CN117871534A (en)

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