WO2022269300A1 - 塗装評価装置及び塗装評価方法 - Google Patents
塗装評価装置及び塗装評価方法 Download PDFInfo
- Publication number
- WO2022269300A1 WO2022269300A1 PCT/IB2021/000414 IB2021000414W WO2022269300A1 WO 2022269300 A1 WO2022269300 A1 WO 2022269300A1 IB 2021000414 W IB2021000414 W IB 2021000414W WO 2022269300 A1 WO2022269300 A1 WO 2022269300A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intensity distribution
- coating
- evaluation
- painted surface
- shape
- Prior art date
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 130
- 239000011248 coating agent Substances 0.000 title claims abstract description 98
- 238000000576 coating method Methods 0.000 title claims abstract description 98
- 238000013210 evaluation model Methods 0.000 claims abstract description 38
- 230000004044 response Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 29
- 230000000737 periodic effect Effects 0.000 claims description 17
- 238000013461 design Methods 0.000 claims description 9
- 238000010801 machine learning Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000001678 irradiating effect Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 238000010422 painting Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 3
- 238000012937 correction Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000000149 argon plasma sintering Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000010365 information processing Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000011960 computer-aided design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010238 partial least squares regression Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007637 random forest analysis Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012706 support-vector machine Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- 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
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
-
- 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
- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
-
- 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
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
- G01N2021/8427—Coatings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/12—Circuits of general importance; Signal processing
- G01N2201/129—Using chemometrical methods
- G01N2201/1296—Using chemometrical methods using neural networks
Definitions
- the present invention relates to a coating evaluation device and a coating evaluation method.
- Light and dark pattern light which is a repeating pattern of light and dark, is projected onto the painted surface, and the light and dark pattern formed on the painted surface is photographed to calculate the luminance distribution in the direction in which the light and dark are repeated.
- an invention that calculates a wavelength distribution that is a distribution of , calculates an integral value of a section corresponding to a predetermined wavelength region of the wavelength distribution, and evaluates a coated surface based on the integral value (Patent Document 1).
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a coating evaluation apparatus capable of accurately evaluating the sharpness of a coated surface even when the coated surface is curved. and to provide a coating evaluation method.
- a coating evaluation apparatus and a coating evaluation method irradiate a coated surface with incident light having a first intensity distribution, and acquire a second intensity distribution of reflected light from the coated surface. Further, based on the curved shape of the painted surface, a third intensity distribution associated with the second intensity distribution is calculated, and an evaluation value for the sharpness of the painted surface is output with respect to the input including the third intensity distribution. A model is used to estimate an evaluation value corresponding to the third intensity distribution.
- FIG. 1 is a block diagram showing the configuration of a coating evaluation device according to one embodiment of the present invention.
- FIG. 2 is a flow chart showing processing of the coating evaluation device according to one embodiment of the present invention.
- FIG. 3A is a schematic diagram showing a first example of a first intensity distribution of incident light.
- FIG. 3B is a schematic diagram showing a second example of the first intensity distribution of incident light.
- FIG. 4A is a schematic diagram showing an example of the first marking pattern.
- FIG. 4B is a schematic diagram showing an example of the second marking pattern.
- the coating evaluation apparatus includes a shape acquisition section 11 , an intensity acquisition section 15 , a light source section 19 and a controller 100 .
- the coating evaluation device may include the material acquisition unit 13 and the output unit 400 .
- the shape acquisition unit 11 , the material acquisition unit 13 , the intensity acquisition unit 15 , the light source unit 19 and the output unit 400 are connected to the controller 100 .
- the shape acquisition unit 11 acquires shape information representing the curved shape of the painted surface to be evaluated for coating. More specifically, the shape acquisition unit 11 may acquire design data of the painted surface as shape information.
- design data includes CAD (Computer-aided design) data.
- the design data is not limited to this as long as it represents the degree of curvature (curvature) of the coated surface.
- the shape acquisition unit 11 may acquire the stored design data of the painted surface from a database (not shown), or may acquire the design data of the painted surface from an external connection device (not shown) via a wired/wireless network. may be acquired. In addition, the shape acquisition unit 11 may acquire design data based on user input.
- the shape acquisition unit 11 may acquire measurement data obtained by measuring the coated surface as shape information.
- the shape acquisition unit 11 may be a 3D scanner.
- the shape acquisition unit 11 may acquire position information of an area of the coated surface irradiated with incident light by the light source unit 19 described later, and acquire shape information based on the position information. That is, the design data of the coated surface or the measurement data obtained by measuring the coated surface may be acquired with reference to the position of the region irradiated with the incident light.
- the material acquisition unit 13 acquires material information of the painted surface. More specifically, the material acquisition unit 13 acquires information such as the type and color of the member as the material information of the coated surface.
- the material acquisition unit 13 may acquire the stored material information of the painted surface from a database (not shown), or may acquire the material information of the painted surface from an external connection device (not shown) via a wired/wireless network. may be acquired. Alternatively, the material acquisition unit 13 may acquire material information based on user input.
- the light source unit 19 irradiates the coating surface with incident light having a set first intensity distribution. More specifically, the light source unit 19 has a plurality of light sources arranged in a plane, and the intensity of light emitted from each light source is adjusted by a controller 100, which will be described later, to generate incident light having a first intensity distribution. Irradiate the surface to be painted.
- the light source that constitutes the light source unit 19 include an LED lamp, an incandescent lamp, a fluorescent lamp, and the like.
- the first intensity distribution of incident light may have a periodic structure in the first direction.
- FIG. 3A shows an example of a first intensity distribution having a striped periodic structure in which bright portions and dark portions are continuously arranged along the R1 direction.
- the first intensity distribution may have a periodic structure in a second direction different from the first direction.
- FIG. 3B shows an example of a first intensity distribution having a striped periodic structure in which bright portions and dark portions are continuously arranged along the R2 direction, which is different from the R1 direction.
- the first intensity distribution of incident light may have a periodic structure in the direction of the principal direction vector at a predetermined position on the coated surface.
- the principal direction vector means a tangent vector in the case where the curvature of the curve appearing at the intersection of the plane containing the tangent vector and normal vector of the painted surface and the painted surface becomes the principal curvature of the painted surface at a predetermined position. do.
- the controller 100 calculates a principal direction vector at a predetermined position on the coating surface based on the shape information acquired by the material acquisition unit 13, and determines the intensity distribution having a periodic structure in the direction of the principal direction vector as the first An intensity distribution may be used.
- centering on an axis parallel to the direction of incidence of incident light, so that the first intensity distribution has a positional relationship in which the first direction in which the first intensity distribution has a periodic structure and the principal direction vector at a predetermined position on the coated surface match.
- the coated surface may be rotated with respect to the light source section 19 .
- the intensity of light may change intermittently at the boundary between the "bright portion” and the "dark portion” of the first intensity distribution. Therefore, for example, when the intensity of incident light in the “bright portion” (first region) is equal to or greater than the first threshold, the intensity of incident light in the “dark portion” (second region) is lower than the first threshold. It may be less than or equal to the second threshold.
- the light source unit 19 may irradiate incident light including the first marking pattern for alignment.
- FIG. 4A shows an example of a rectangular first marking pattern set so as to surround the incident light of the first intensity distribution shown in FIG. 3A.
- FIG. 4B shows a second marking pattern curved from a rectangular shape according to the curved shape.
- the intensity acquisition unit 15 acquires the second intensity distribution of the reflected light from the coated surface that received the incident light. More specifically, the intensity acquisition unit 15 is a digital camera equipped with a solid-state imaging device such as a CCD or CMOS, and acquires a digital image by capturing an area of the coated surface irradiated with incident light. A second intensity distribution is represented by the intensity of light in each pixel that constitutes the digital image.
- the intensity acquisition unit 15 captures an image of the area irradiated with the incident light by setting the focal length, the angle of view of the lens, the vertical and horizontal angles of the camera, and the like.
- the intensity acquisition unit 15 may acquire, as the second marking pattern, the intensity distribution of the reflected light from the area irradiated with the first marking pattern on the coated surface.
- the controller 100 may acquire the reference shape information of the area irradiated with the first marking pattern based on the difference between the first marking pattern and the second marking pattern.
- the position information of the area on the painted surface having shape information that matches the reference shape information may be obtained. Accordingly, it is possible to acquire the shape information by performing alignment according to the area irradiated with the incident light.
- the controller 100 is a general-purpose computer equipped with a CPU (Central Processing Unit), memory, storage device, input/output unit, and the like.
- CPU Central Processing Unit
- a computer program (painting evaluation program) is installed in the controller 100 to function as a paint evaluation device.
- the controller 100 functions as a plurality of information processing circuits provided in the coating evaluation apparatus.
- a plurality of information processing circuits provided in the coating evaluation apparatus by software is shown. It is also possible to configure Also, a plurality of information processing circuits may be configured by individual hardware.
- the controller 100 includes an intensity correction section 110 , an evaluation model setting section 120 and an evaluation value estimation section 130 .
- the intensity correction unit 110 calculates a third intensity distribution associated with the second intensity distribution based on the shape information.
- the second intensity distribution includes a light scattering component caused by deviation of the curved shape of the painted surface from the planar shape. Therefore, the intensity correction unit 110 calculates the third intensity distribution so as to cancel out the light scattering component on the painted surface caused by the displacement, which is included in the second intensity distribution.
- the light scattering component caused by the deviation of the curved shape of the painted surface from the planar shape is calculated using rendering technology using computer graphics and simulation technology such as shading.
- the intensity correction unit 110 can calculate the third intensity distribution so as to cancel out the light scattering component on the painted surface due to the deviation contained in the second intensity distribution.
- the second intensity distribution and the third intensity distribution match.
- the evaluation model setting unit 120 sets an evaluation model that outputs an evaluation value for the sharpness of the painted surface with respect to the input including the third intensity distribution.
- the evaluation model is training data that combines the intensity distribution of the reflected light obtained by irradiating the evaluated painted surface, which has a planar shape, with incident light, and the evaluation value of the sharpness of the evaluated painted surface. It is a learning model generated by machine learning based on
- the evaluation value of sharpness is determined by, for example, at least one of the smoothness of the painted surface, the ratio of diffuse reflection to the reflected light on the painted surface, and the resolution of the image reflected on the painted surface. is an indicator.
- the evaluation value of sharpness of the evaluated painted surface is a numerical value previously given to the evaluated painted surface by another sharpness evaluation method.
- the evaluation model setting unit 120 may set an evaluation model that outputs an evaluation value of the sharpness of the painted surface in response to the input including the material information and the third intensity distribution.
- the evaluation model includes the material information of the evaluated painted surface, which is a planar shape, the intensity distribution of the reflected light obtained by irradiating the evaluated painted surface with incident light, and the evaluation of the sharpness of the evaluated painted surface. It is a learning model generated by machine learning based on teacher data consisting of pairs of values.
- Techniques for generating learning models by machine learning include, for example, neural networks, support vector machines, Random Forest, XGBoost, LightGBM, PLS regression, Ridge regression, and Lasso regression. are mentioned.
- a method of generating a learning model by machine learning is not limited to the examples given here.
- the evaluation model setting unit 120 may set an evaluation model by performing machine learning based on teacher data acquired from a database (not shown).
- the evaluation model may be stored in advance in a database (not shown), and the evaluation model setting unit 120 may set the evaluation model acquired from the database.
- the evaluation value estimation unit 130 uses the set evaluation model to estimate the evaluation value corresponding to the third intensity distribution. More specifically, when the set evaluation model is an evaluation model that outputs an evaluation value for the sharpness of the painted surface with respect to the input including the third intensity distribution, the evaluation value estimating unit 130 uses the evaluation model Enter the third intensity distribution in . Then, evaluation value estimation section 130 sets the value output from the evaluation model as the evaluation value corresponding to the third intensity distribution.
- the evaluation value corresponding to the third intensity distribution is an estimated evaluation value regarding the sharpness of the painted surface.
- the evaluation value estimating unit 130 adds the material information to the evaluation model. and a third intensity distribution. Then, the evaluation value estimation unit 130 sets the value output from the evaluation model as the evaluation value corresponding to the combination of the material information and the third intensity distribution.
- the evaluation value corresponding to the third intensity distribution is an estimated evaluation value regarding the sharpness of the painted surface.
- the output unit 400 outputs the estimated evaluation value regarding the sharpness of the painted surface.
- step S101 the shape acquisition unit 11 acquires shape information. Also, the material acquisition unit 13 acquires material information.
- step S105 the controller 100 sets the first intensity distribution of incident light.
- step S107 the intensity acquisition unit 15 acquires the second intensity distribution of the reflected light.
- step S109 the intensity correction unit 110 calculates the third intensity distribution associated with the second intensity distribution based on the shape information.
- step S111 the evaluation value estimation unit 130 estimates an evaluation value corresponding to the third intensity distribution using the set evaluation model.
- step S113 the output unit 400 outputs the evaluation value estimated by the evaluation value estimation unit 130.
- the coating evaluation apparatus, the coating evaluation method, and the coating evaluation program according to the present embodiment irradiate the coated surface with incident light having the first intensity distribution, and the reflected light from the coated surface has the first intensity distribution. 2 Acquire the intensity distribution. Further, based on the curved shape of the painted surface, a third intensity distribution associated with the second intensity distribution is calculated, and an evaluation value for the sharpness of the painted surface is output with respect to the input including the third intensity distribution. A model is used to estimate an evaluation value corresponding to the third intensity distribution.
- the smaller the deviation of the curved shape from the planar shape the smaller the difference between the second intensity distribution and the third intensity distribution.
- the second intensity distribution and the third intensity distribution may coincide. This makes it possible to remove, from the second intensity distribution, the scattering component of light on the coated surface due to the deviation from the planar shape of the curved shape. That is, the third intensity distribution is calculated so as to cancel out the light scattering component on the coated surface caused by the displacement, which is included in the second intensity distribution.
- the evaluation model is the intensity distribution and evaluation of the reflected light obtained by irradiating the evaluated painted surface, which has a planar shape, with the incident light.
- the learning model may be a learning model generated by machine learning based on teacher data having a set of sharpness evaluation values of a painted surface. As a result, it is possible to accurately evaluate the sharpness of the painted surface, which is a curved surface, by using the evaluation model generated from the teacher data regarding the evaluated painted surface, which is a planar shape.
- the evaluation value of the sharpness of the painted surface is the smoothness of the painted surface, the ratio of diffuse reflection to the reflected light on the painted surface, It may be an index determined by at least one of resolution of an image reflected on a painted surface. In this way, criteria for evaluating sharpness of painted surfaces are specified.
- the coating evaluation device, the coating evaluation method, and the coating evaluation program according to the present embodiment may acquire design data of the coated surface as shape information, or may acquire measurement data obtained by measuring the coated surface. may be acquired as shape information. As a result, the influence of the curved shape of the coated surface can be suppressed, and the sharpness of the coated surface can be evaluated with high accuracy.
- the first intensity distribution may have a periodic structure in the first direction.
- the first intensity distribution may have a striped periodic structure. Accordingly, the painted surface can be evaluated based on the luminance distribution along the direction in which the periodic structure exists, and the sharpness of the painted surface can be evaluated with high accuracy.
- the first intensity distribution may have a periodic structure in a second direction different from the first direction. Accordingly, the painted surface can be evaluated based on the luminance distribution along the direction in which the periodic structure exists, and the sharpness of the painted surface can be evaluated with high accuracy. Furthermore, it is possible to evaluate the coated surface by reducing the influence caused by the direction of the periodic structure.
- the coating evaluation device, the coating evaluation method, and the coating evaluation program according to the present embodiment calculate the main direction vector at a predetermined position on the coating surface based on the shape information, and have a periodic structure in the direction of the main direction vector.
- the intensity distribution may be set as the first intensity distribution.
- the first intensity distribution includes the first region where the intensity of the incident light is equal to or higher than the first threshold, and the first region where the intensity of the incident light is the first threshold and a second region that is less than or equal to a second threshold that is less than .
- the coating evaluation device, the coating evaluation method, and the coating evaluation program according to the present embodiment acquire positional information of a region irradiated with incident light on the coated surface, and acquire shape information based on the positional information. may be As a result, the curved shape represented by the shape information can be aligned with the painted surface to be evaluated.
- the coating evaluation apparatus, the coating evaluation method, and the coating evaluation program according to the present embodiment irradiate the coated surface with incident light including the first marking pattern, and the coated surface is irradiated with the first marking pattern.
- the intensity distribution of the reflected light from the area may be acquired as the second marking pattern.
- the reference shape information of the area irradiated with the first marking pattern is acquired, and the area on the coating surface having the shape information that matches the reference shape information. It may be one that acquires position information.
- the curved shape represented by the shape information can be aligned with the painted surface to be evaluated.
- the coating evaluation device, the coating evaluation method, and the coating evaluation program according to the present embodiment acquire the material information of the painted surface, An evaluation model that outputs the evaluation value may be used to estimate the evaluation value corresponding to the combination of the material information and the third intensity distribution.
- An evaluation model that outputs the evaluation value may be used to estimate the evaluation value corresponding to the combination of the material information and the third intensity distribution.
- the evaluation model includes material information of the evaluated painted surface having a planar shape, and is obtained by irradiating the evaluated painted surface with incident light.
- the learning model may be a learning model generated by machine learning based on teacher data including a set of the intensity distribution of the reflected light and the evaluation value of the sharpness of the evaluated painted surface.
- Processing circuitry includes programmed processors, electrical circuits, etc., as well as devices such as application specific integrated circuits (ASICs) and circuit components arranged to perform the described functions. etc. are also included.
- ASICs application specific integrated circuits
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Mathematical Physics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
図1を参照して、本実施形態に係る塗装評価装置の構成例を説明する。図1に示すように、塗装評価装置は、形状取得部11と、強度取得部15と、光源部19と、コントローラ100とを備える。その他、塗装評価装置は、材質取得部13と、出力部400とを備えるものであってもよい。形状取得部11、材質取得部13、強度取得部15、光源部19、出力部400は、コントローラ100と接続される。
次に、本実施形態に係る塗装評価装置の処理手順を、図2のフローチャートを参照して説明する。なお、図2のフローチャートで示される処理が開始される前に、評価モデル設定部120によって評価モデルが既に設定されているものとする。
以上詳細に説明したように、本実施形態に係る塗装評価装置、塗装評価方法、塗装評価プログラムは、第1強度分布を有する入射光を塗装面に照射し、塗装面からの反射光が有する第2強度分布を取得する。また、塗装面の湾曲形状に基づいて、第2強度分布に対応付けられる第3強度分布を算出し、第3強度分布を含む入力に対して塗装面の鮮映性の評価値を出力する評価モデルを用いて、第3強度分布に対応する評価値を推定する。
13 材質取得部
15 強度取得部
19 光源部
100 コントローラ
110 強度補正部
120 評価モデル設定部
130 評価値推定部
400 出力部
Claims (17)
- 塗装面の湾曲形状を表す形状情報を取得する形状取得部と、
第1強度分布を有する入射光を前記塗装面に照射する光源部と、
前記塗装面からの反射光が有する第2強度分布を取得する強度取得部と、
コントローラと、を備える塗装評価装置であって、
前記コントローラは、
前記形状情報に基づいて、前記第2強度分布に対応付けられる第3強度分布を算出し、
前記第3強度分布を含む入力に対して前記塗装面の鮮映性の評価値を出力する評価モデルを用いて、前記第3強度分布に対応する評価値を推定すること
を特徴とする塗装評価装置。 - 請求項1に記載の塗装評価装置であって、
前記湾曲形状の平面形状からのズレが小さいほど、前記第2強度分布と前記第3強度分布の間の差分は小さく、
前記湾曲形状が平面形状である場合、前記第2強度分布と前記第3強度分布は一致すること
を特徴とする塗装評価装置。 - 請求項2に記載の塗装評価装置であって、
前記コントローラは、前記第2強度分布に含まれる、前記ズレによる前記塗装面での光の散乱成分を打ち消すように、前記第3強度分布を算出すること
を特徴とする塗装評価装置。 - 請求項1~3のいずれか一項に記載の塗装評価装置であって、
前記評価モデルは、
平面形状である評価済塗装面に対して前記入射光を照射して得られる反射光の強度分布と前記評価済塗装面の鮮映性の評価値を組とする教師データに基づく機械学習によって生成された学習モデルであること
を特徴とする塗装評価装置。 - 請求項1~4のいずれか一項に記載の塗装評価装置であって、
前記塗装面の鮮映性の評価値は、前記塗装面の平滑度、前記塗装面での反射光に占める拡散反射の割合、前記塗装面に映りこむ像の解像度、の少なくとも1つによって決定される指標であること
を特徴とする塗装評価装置。 - 請求項1~5のいずれか一項に記載の塗装評価装置であって、
前記形状取得部は、前記塗装面の設計データを前記形状情報として取得すること
を特徴とする塗装評価装置。 - 請求項1~6のいずれか一項に記載の塗装評価装置であって、
前記形状取得部は、前記塗装面を計測して得られた計測データを前記形状情報として取得すること
を特徴とする塗装評価装置。 - 請求項1~7のいずれか一項に記載の塗装評価装置であって、
前記第1強度分布は、第1方向において周期構造を有すること
を特徴とする塗装評価装置。 - 請求項8に記載の塗装評価装置であって、
前記第1強度分布は、前記第1方向と異なる第2方向において周期構造を有すること
を特徴とする塗装評価装置。 - 請求項1~9のいずれか一項に記載の塗装評価装置であって、
前記コントローラは、
前記形状情報に基づいて、前記塗装面上の所定位置における主方向ベクトルを算出し、
前記主方向ベクトルの方向において周期構造を有する強度分布を前記第1強度分布として設定すること
を特徴とする塗装評価装置。 - 請求項1~10のいずれか一項に記載の塗装評価装置であって、
前記第1強度分布は、
前記入射光の強度が第1閾値以上である第1領域と、
前記入射光の強度が前記第1閾値よりも小さい第2閾値以下である第2領域と、
を有すること
を特徴とする塗装評価装置。 - 請求項1~11のいずれか一項に記載の塗装評価装置であって、
前記形状取得部は、
前記塗装面のうち、前記入射光が照射された領域の位置情報を取得し、
前記位置情報に基づいて前記形状情報を取得すること
を特徴とする塗装評価装置。 - 請求項1~12のいずれか一項に記載の塗装評価装置であって、
前記光源部は、第1マーキングパターンを含む前記入射光を照射し、
前記強度取得部は、前記塗装面のうち、前記第1マーキングパターンが照射された領域からの反射光の強度分布を第2マーキングパターンとして取得し、
前記コントローラは、
前記第1マーキングパターンと前記第2マーキングパターンの差分に基づいて、前記第1マーキングパターンが照射された領域の基準形状情報を取得し、
前記基準形状情報と一致する前記形状情報を有する前記塗装面上の領域の位置情報を取得すること
を特徴とする塗装評価装置。 - 請求項1~13のいずれか一項に記載の塗装評価装置であって、
前記塗装面の材質情報を取得する材質取得部を更に備え、
前記コントローラは、
前記材質情報及び前記第3強度分布を含む入力に対して前記塗装面の鮮映性の評価値を出力する前記評価モデルを用いて、前記材質情報及び前記第3強度分布の組合せに対応する評価値を推定すること
を特徴とする塗装評価装置。 - 請求項14に記載の塗装評価装置であって、
前記評価モデルは、
平面形状である評価済塗装面の前記材質情報、前記評価済塗装面に対して前記入射光を照射して得られる反射光の強度分布、前記評価済塗装面の鮮映性の評価値を組とする教師データに基づく機械学習によって生成された学習モデルであること
を特徴とする塗装評価装置。 - 塗装面の湾曲形状を表す形状情報を取得し、
第1強度分布を有する入射光を前記塗装面に照射し、
前記塗装面からの反射光が有する第2強度分布を取得し、
前記形状情報に基づいて、前記第2強度分布に対応付けられる第3強度分布を算出し、
前記第3強度分布を含む入力に対して前記塗装面の鮮映性の評価値を出力する評価モデルを用いて、前記第3強度分布に対応する評価値を推定すること
を特徴とする塗装評価方法。 - 塗装面の湾曲形状を表す形状情報を取得する形状取得部と、
第1強度分布を有する入射光を前記塗装面に照射する光源部と、
前記塗装面からの反射光が有する第2強度分布を取得する強度取得部と、
を制御するコンピュータに、
前記形状取得部を用いて前記形状情報を取得するステップと、
前記形状情報に基づいて、前記第2強度分布に対応付けられる第3強度分布を算出するステップと、
前記第3強度分布を含む入力に対して前記塗装面の鮮映性の評価値を出力する評価モデルを用いて、前記第3強度分布に対応する評価値を推定するステップと、
を実行させるための塗装評価プログラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202180099282.3A CN117581092A (zh) | 2021-06-21 | 2021-06-21 | 涂装评价装置和涂装评价方法 |
EP21946255.3A EP4361612A1 (en) | 2021-06-21 | 2021-06-21 | Coating evaluation device and coating evaluation method |
JP2023529137A JPWO2022269300A1 (ja) | 2021-06-21 | 2021-06-21 | |
PCT/IB2021/000414 WO2022269300A1 (ja) | 2021-06-21 | 2021-06-21 | 塗装評価装置及び塗装評価方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2021/000414 WO2022269300A1 (ja) | 2021-06-21 | 2021-06-21 | 塗装評価装置及び塗装評価方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022269300A1 true WO2022269300A1 (ja) | 2022-12-29 |
Family
ID=84545416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2021/000414 WO2022269300A1 (ja) | 2021-06-21 | 2021-06-21 | 塗装評価装置及び塗装評価方法 |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4361612A1 (ja) |
JP (1) | JPWO2022269300A1 (ja) |
CN (1) | CN117581092A (ja) |
WO (1) | WO2022269300A1 (ja) |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06307835A (ja) * | 1993-04-28 | 1994-11-04 | Mazda Motor Corp | 画像処理装置 |
JPH07311030A (ja) * | 1994-05-19 | 1995-11-28 | Nissan Motor Co Ltd | 塗装面性状測定装置 |
JPH08285559A (ja) * | 1995-04-17 | 1996-11-01 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
JPH11194096A (ja) | 1997-10-29 | 1999-07-21 | Toyota Motor Corp | 塗装面の評価方法および塗装面の検査装置 |
JP2000009454A (ja) * | 1998-06-25 | 2000-01-14 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
JP2002148195A (ja) * | 2000-11-06 | 2002-05-22 | Sumitomo Chem Co Ltd | 表面検査装置及び表面検査方法 |
JP2006003372A (ja) * | 2005-09-05 | 2006-01-05 | Arc Harima Kk | Ccdカメラによる正反射式表面性状測定方法及びその装置 |
JP2012007953A (ja) * | 2010-06-23 | 2012-01-12 | Nippon Paint Co Ltd | 塗装ムラ評価値算出方法、塗装ムラ評価値算出装置、及び塗装ムラ評価方法 |
US20190287237A1 (en) * | 2016-12-01 | 2019-09-19 | Autaza Tecnologia LTDA-EPP | Method and system for automatic quality inspection of materials and virtual material surfaces |
US20200055558A1 (en) * | 2018-08-16 | 2020-02-20 | Carl Zeiss Industrielle Messtechnik Gmbh | Automobile manufacturing plant and method |
JP2021056117A (ja) * | 2019-09-30 | 2021-04-08 | 日立造船株式会社 | 評価装置、評価システム、制御プログラム、および評価方法 |
-
2021
- 2021-06-21 EP EP21946255.3A patent/EP4361612A1/en active Pending
- 2021-06-21 JP JP2023529137A patent/JPWO2022269300A1/ja active Pending
- 2021-06-21 CN CN202180099282.3A patent/CN117581092A/zh active Pending
- 2021-06-21 WO PCT/IB2021/000414 patent/WO2022269300A1/ja active Application Filing
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06307835A (ja) * | 1993-04-28 | 1994-11-04 | Mazda Motor Corp | 画像処理装置 |
JPH07311030A (ja) * | 1994-05-19 | 1995-11-28 | Nissan Motor Co Ltd | 塗装面性状測定装置 |
JPH08285559A (ja) * | 1995-04-17 | 1996-11-01 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
JPH11194096A (ja) | 1997-10-29 | 1999-07-21 | Toyota Motor Corp | 塗装面の評価方法および塗装面の検査装置 |
JP2000009454A (ja) * | 1998-06-25 | 2000-01-14 | Nissan Motor Co Ltd | 表面欠陥検査装置 |
JP2002148195A (ja) * | 2000-11-06 | 2002-05-22 | Sumitomo Chem Co Ltd | 表面検査装置及び表面検査方法 |
JP2006003372A (ja) * | 2005-09-05 | 2006-01-05 | Arc Harima Kk | Ccdカメラによる正反射式表面性状測定方法及びその装置 |
JP2012007953A (ja) * | 2010-06-23 | 2012-01-12 | Nippon Paint Co Ltd | 塗装ムラ評価値算出方法、塗装ムラ評価値算出装置、及び塗装ムラ評価方法 |
US20190287237A1 (en) * | 2016-12-01 | 2019-09-19 | Autaza Tecnologia LTDA-EPP | Method and system for automatic quality inspection of materials and virtual material surfaces |
US20200055558A1 (en) * | 2018-08-16 | 2020-02-20 | Carl Zeiss Industrielle Messtechnik Gmbh | Automobile manufacturing plant and method |
JP2021056117A (ja) * | 2019-09-30 | 2021-04-08 | 日立造船株式会社 | 評価装置、評価システム、制御プログラム、および評価方法 |
Also Published As
Publication number | Publication date |
---|---|
EP4361612A1 (en) | 2024-05-01 |
JPWO2022269300A1 (ja) | 2022-12-29 |
CN117581092A (zh) | 2024-02-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103649674B (zh) | 测量设备以及信息处理设备 | |
JP6519265B2 (ja) | 画像処理方法 | |
Zhang et al. | A robust surface coding method for optically challenging objects using structured light | |
JP2005202945A (ja) | Cadモデリングシステム及び方法 | |
US20070176927A1 (en) | Image Processing method and image processor | |
TW201520975A (zh) | 產生場景深度圖之方法及裝置 | |
JP2012103239A (ja) | 三次元計測装置、三次元計測方法及びプログラム | |
JP2015184056A (ja) | 計測装置、方法及びプログラム | |
JP2014119442A (ja) | 3次元計測装置およびその制御方法 | |
CN108616726A (zh) | 基于结构光的曝光控制方法及曝光控制装置 | |
JP2000111490A (ja) | 塗装面の検出装置 | |
WO2020012707A1 (ja) | 3次元測定装置及び方法 | |
WO2022269300A1 (ja) | 塗装評価装置及び塗装評価方法 | |
WO2022269301A1 (ja) | 塗装評価装置及び塗装評価方法 | |
Gu et al. | 3dunderworld-sls: an open-source structured-light scanning system for rapid geometry acquisition | |
JP4382430B2 (ja) | 頭部の三次元形状計測システム | |
EP3070432B1 (en) | Measurement apparatus | |
CN111105365A (zh) | 一种纹理影像的色彩校正方法、介质、终端和装置 | |
JPS63233312A (ja) | 被測定物体からの反射光による距離測定方法 | |
JP5322460B2 (ja) | 形状測定方法 | |
JP2021081791A5 (ja) | ||
JP2005003631A (ja) | 3次元形状測定装置および方法 | |
KR20200032442A (ko) | 자기보정이 가능한 3차원 정보 생성 장치 및 방법 | |
JP2009216650A (ja) | 三次元形状測定装置 | |
JP2020129187A (ja) | 外形認識装置、外形認識システム及び外形認識方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21946255 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023529137 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180099282.3 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18572215 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2021946255 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021946255 Country of ref document: EP Effective date: 20240122 |