KR20110060194A - Lighting module and lighting method for machine vision system - Google Patents

Lighting module and lighting method for machine vision system Download PDF

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KR20110060194A
KR20110060194A KR1020090116710A KR20090116710A KR20110060194A KR 20110060194 A KR20110060194 A KR 20110060194A KR 1020090116710 A KR1020090116710 A KR 1020090116710A KR 20090116710 A KR20090116710 A KR 20090116710A KR 20110060194 A KR20110060194 A KR 20110060194A
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product
machine vision
image
vision system
illumination
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KR101107562B1 (en
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김양곤
임길택
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(주)화이버 옵틱코리아
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • 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
    • 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
    • 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
    • G01N21/8806—Specially adapted optical and illumination features
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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Abstract

PURPOSE: An illumination module and an illuminating method are provided to acquire a high quality product image by preparing a standard image for deciding quality of the product. CONSTITUTION: A light projecting part(32) projects the red, the blue, and the green which are three primary colours of the light. The light projecting part includes an RGB LED(31) expressing various colours through the dimming of each color. The standard images which are referred to decide quality of a product is prepared. An illuminating module is set so that it can project a wavelength band used in acquiring the standard images. A controller(33) controls brightness of each colour of the RGB LED and projects lights with the wavelength band proper for the product.

Description

머신비젼 시스템의 조명모듈 및 조명방법{LIGHTING MODULE AND LIGHTING METHOD FOR MACHINE VISION SYSTEM}Lighting module and lighting method of machine vision system {LIGHTING MODULE AND LIGHTING METHOD FOR MACHINE VISION SYSTEM}

본 발명은 제품의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에 사용되는 구성으로, 양질의 제품 이미지를 획득하기 위해 조사되는 조명모듈에 관한 것이다.The present invention relates to a lighting module that is irradiated to obtain a high quality product image as a configuration used in a machine vision system for determining whether a good product by analyzing the image of the product.

머신비젼 기술은 사람의 눈으로 보아오던 부분을 기계(vision)로 대신해 검사정밀도를 높이고 검사 과정을 자동화함으로써 인건비 감소와 제품의 질적 향상이라는 시너지 효과를 창출할 수 있는 기술로서, 구체적으로는 이미지를 분석하는 기술이고, 주로 표면 마무리 검사, 물리적 결함 추적, 섬유제품의 검사, 색깔 검사, 반도체 제조 공정의 검사 등 다양한 제조과정에서 쓰인다.Machine vision technology is a technology that can create synergy effects such as reduction of labor cost and quality improvement by enhancing inspection accuracy and automating inspection process by substituting the vision that is seen by the human eye. It is an analysis technology and is mainly used in various manufacturing processes such as surface finishing inspection, physical defect tracking, textile product inspection, color inspection, and semiconductor manufacturing process inspection.

한편, 이러한 머신비젼 기술이 움직이는 물체의 실시간 궤적 추적 시스템에 적용될 때 나타날 수 있는 제약 조건은 여러 가지가 있겠으나, 일예로 주위의 다양한 잡음 요소(광량, 그늘)에 강인해야 한다. 이는, 대상물체인식에 있어서 알고리즘이 문제이지만 여기서는 빛과 같은 주위의 여건에 너무 민감한 반응을 보이면 같은 화면을 샘플 하여도 주위의 미세한 광량에 따라 판이한 데이터를 추출할 수도 있기 때문이다.On the other hand, there are many constraints that can be applied when the machine vision technology is applied to the real-time trajectory tracking system of a moving object, but it must be robust against various noise components (light quantity, shade), for example. This is because the algorithm is a problem in object recognition, but if the response is too sensitive to the surrounding conditions such as light, even if the same screen is sampled, it may extract different data according to the amount of light in the surroundings.

그러므로 머신비젼 기술은 검사하고자 하는 물체의 상태(크기, 색상, 모양 등)에 따라 특정 파장대에서 검사가 잘되는 현상이 발생하며, 이러한 현상에 대응하여 특정 파장대를 조사할 수 있는 조명장치의 개발이 요구된다.Therefore, the machine vision technology produces a phenomenon that inspection is good at a specific wavelength band according to the state (size, color, shape, etc.) of the object to be inspected, and it is required to develop an illumination device that can irradiate a specific wavelength band in response to such a phenomenon. do.

도 1은 머신비젼 시스템의 비젼장치와 특정 파장대를 조사할 수 있는 조명장치 간의 관계를 개략적으로 나타낸 도면이다.1 is a view schematically showing a relationship between a vision device of a machine vision system and a lighting device capable of irradiating a specific wavelength band.

머신비젼 시스템의 비젼장치(10)는 케이스(11), 이미지 센서(13), 대물렌즈(14), 미러(15)를 포함하여 구성된다.The vision device 10 of the machine vision system includes a case 11, an image sensor 13, an objective lens 14, and a mirror 15.

조명장치(22)는 비젼장치(10)가 제품(100)의 이미지를 획득하는데 중요한 역할을 담당하는 구성으로 제품(100)에 따라 특정 파장대를 조사하기 위하여 필터(21) 교체를 요구한다. 이러한 필터(21)는 조명필터로서 주파수 필터, 칼라필터, 편광필터 및 광세기 조절필터 중 어느 하나일 수 있다.The lighting device 22 is a configuration in which the vision device 10 plays an important role in acquiring an image of the product 100 and requires replacement of the filter 21 to irradiate a specific wavelength band according to the product 100. The filter 21 may be any one of a frequency filter, a color filter, a polarization filter, and a light intensity control filter as an illumination filter.

한편, 이와 같은 종래의 머신비젼 시스템에서의 조명장치는 필터(21)의 교체를 요구하게 되어 필터(21) 교체에 따른 시간 지연으로 생산성이 저감되고, 필터(21) 구성에 의한 유지비용이 추가로 발생한다.On the other hand, the lighting device in the conventional machine vision system requires the replacement of the filter 21, the productivity is reduced by the time delay caused by the replacement of the filter 21, the maintenance cost by the filter 21 configuration is added Occurs.

본 발명은 상기와 같은 문제점을 해결하기 위하여 안출 된 것으로, 본 발명의 목적은 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED를 이용하여 조명필터 없이 특정 파장대를 조사할 수 있는 머신비젼 시스템의 조명모듈을 제공하는 데 있다.The present invention has been made to solve the above problems, the object of the present invention can be irradiated with the three primary colors of light (Red), blue (Blue), green (Green), respectively, the brightness control of each color It is to provide a lighting module of machine vision system that can irradiate specific wavelength band without lighting filter by using RGB LED that can express 256 powers of 3 (256 3 ).

또한, 본 발명의 다른 목적은 머신비젼 시스템에서 양질의 제품 이미지를 획득할 수 있는 조명방법을 제공하는 데 있다.In addition, another object of the present invention to provide an illumination method capable of obtaining a good product image in a machine vision system.

상기와 같은 본 발명의 목적은, 제품의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에 사용되는 구성으로, 양질의 제품 이미지를 획득하기 위해 조사되는 조명모듈에 있어서,An object of the present invention as described above, in the illumination module irradiated to obtain a good product image as a configuration used in the machine vision system for determining the good quality by analyzing the image of the product,

빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED를 구비한 광조사부와;Red, Blue, and Green, which are the three primary colors of light, can be irradiated separately, and RGB LEDs can express 256 powers (256 3 ) of 256 colors by adjusting the brightness of each color. A light irradiation unit;

상기 RGB LED의 각 색상의 밝기를 조절하여 상기 제품에 적합한 파장대의 조명을 조사하도록 제어하는 제어부;를 포함하여 구성되는 것을 특징으로 하는 머신비젼 시스템의 조명모듈에 의해 달성된다.It is achieved by the illumination module of the machine vision system comprising a; control unit for controlling the illumination of the wavelength band suitable for the product by adjusting the brightness of each color of the RGB LED.

또한, 본 발명의 다른 목적은, 제품의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에서, 양질의 제품 이미지를 획득하기 위한 조명방법에 있어서,In addition, another object of the present invention, in a machine vision system for determining the good quality by analyzing the image of the product, in the illumination method for obtaining a good product image,

상기 제품의 양품 여부를 판단하기 위해 기준이 되는 표준 이미지를 준비하는 단계;Preparing a standard image as a reference for determining whether the product is good or bad;

상기 표준 이미지 획득에 사용된 파장대로 조사되도록 조명모듈을 셋팅하는 단계;를 포함하여 이루어지는 것을 특징으로 하는 머신비젼 시스템의 조명방법에 의해 달성된다.Setting the illumination module to be irradiated with the wavelength used for the standard image acquisition is achieved by the illumination method of the machine vision system comprising a.

본 발명에 따른 머신비젼 시스템의 조명모듈 및 조명방법에 의하면, 모듈 형태로 제작된 LED 조명으로 발광부 모양에 상관없이 256 칼라로 조색하여 조명이 가능하다.According to the illumination module and the illumination method of the machine vision system according to the present invention, the illumination is possible by adjusting the color to 256 colors irrespective of the shape of the light emitting unit with the LED light manufactured in the form of a module.

또한, 검사하고자 하는 물체의 상태, 그리고 주변 환경요인에 따라 특정 파장대에서 검사가 잘되는 현상에 대응할 수 있는 장점이 있다. In addition, according to the state of the object to be inspected, and the surrounding environmental factors, there is an advantage that can cope with the phenomenon that the inspection is good in a specific wavelength band.

머신비젼 시스템은 통상적으로 영상을 취득하기 위한 조명장치 및 카메라와, 영상을 처리(이미지화)하는 프레임 그래버(Frame Grabber)와, 취득된 영상을 분석 판단하여 양품 여부를 판단하는 PC 그리고 S/W와, 불량 제품을 추출하는 추출장치 등을 포함한다.Machine vision systems typically include lighting devices and cameras for acquiring images, a frame grabber for processing images, a PC for analyzing quality of the acquired images, and a S / W and And an extraction device for extracting defective products.

여기서 본 발명은 양질의 이미지를 취득하기 위한 조명장치에 관한 것으로, 상세하게는 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED(31)를 구비한 광조사부(32)와;Herein, the present invention relates to a lighting device for acquiring a high-quality image, and in detail, red, blue, and green, which are three primary colors of light, can be irradiated, and the brightness of each color can be adjusted. A light irradiation part 32 having an RGB LED 31 capable of expressing colors of three powers 256 3 through 256;

상기 RGB LED(31)의 각 색상의 밝기를 조절하여 상기 제품에 적합한 파장대의 조명을 조사하도록 제어하는 제어부(33);를 포함한 구성이다.And a control unit 33 for controlling the brightness of each color of the RGB LED 31 to control illumination of a wavelength band suitable for the product.

이하, 본 발명의 양호한 실시예를 도시한 첨부도면들과 관련하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings showing a preferred embodiment of the present invention will be described in detail.

도 2는 본 발명에 따른 머신비젼 시스템의 조명모듈의 일예를 나타낸 도면으로써, 본 발명에 따른 조명모듈은 RGB LED(31)를 구비한 광조사부(32)와, RGB LED(31)의 각 색상의 밝기를 조절하여 제품(100)에 적합한 파장대의 조명을 조사하도록 제어하는 제어부(33)를 포함하여 구성된다.2 is a view showing an example of a lighting module of the machine vision system according to the present invention, the lighting module according to the present invention is a light irradiation unit 32 having an RGB LED (31), and each color of the RGB LED (31) It comprises a control unit 33 for controlling to irradiate the light of the wavelength band suitable for the product 100 by adjusting the brightness of the.

RGB LED(31)는 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)을 각각 조사할 수 있도록 녹색LED, 파란색 LED, 빨간색 LED가 구비되어 있다. 또한, 상기 제어부(33)를 통해 각 색상의 밝기를 조절하여 256의 3승(2563) 가지의 색상 표현이 가능하다. RGB LED 31 is provided with a green LED, a blue LED, a red LED so that the three primary colors of the light (Red), Blue (Blue), Green (Green) can be irradiated respectively. In addition, by controlling the brightness of each color through the control unit 33 it is possible to express the color of the three powers (256 3 ) of 256.

따라서, 제품(100)이 흰색 파장대에서 검사가 잘되는 것으로 파악되면, 흰색 파장대는 녹색 LED, 파란색 LED, 빨간색 LED를 모두 요구함으로, 상기 RGB LED(31)는 녹색 LED, 파란색 LED, 빨간색 LED를 동일한 밝기로 조사하면 된다.Therefore, when the product 100 is found to be well inspected in the white wavelength band, the white wavelength band requires all of the green LED, the blue LED, and the red LED, so that the RGB LED 31 has the same color as the green LED, the blue LED, and the red LED. Investigate with brightness.

다른 일예로서 제품(100)이 노란색 파장대에서 검사가 잘되는 것으로 파악되면, 노란색 파장대는 녹색 LED와, 빨간색 LED를 요구함으로, 상기 RGB LED(31)는 제어부(33)를 통해 녹색 LED와, 빨간색 LED의 밝기를 적절하게 조절하여 조사하면된다.As another example, if the product 100 is found to be well inspected in the yellow wavelength band, the yellow wavelength band requires a green LED and a red LED, such that the RGB LED 31 is connected to the green LED and the red LED through the control unit 33. You can do this by adjusting the brightness of the light properly.

한편, 본 발명의 다른 카테고리로서, 제품(100)의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에서, 양질의 제품 이미지를 획득하기 위한 조명방법은, 상기 제품(100)의 양품 여부를 판단하기 위해 기준이 되는 표준 이미지를 준비하는 단계와, 상기 표준 이미지 획득에 사용된 파장대로 조사되도록 조명모듈을 셋팅하는 단계를 포함하여 이루어진다.On the other hand, as another category of the present invention, in the machine vision system for determining the good quality by analyzing the image of the product 100, the illumination method for obtaining a good product image, the quality of the product 100 is determined And preparing a standard image to be a reference, and setting an illumination module to be irradiated at the wavelength used for obtaining the standard image.

여기서, 상기 표준 이미지를 준비하는 단계는, 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED(31)로 256의 3승(2563) 가지의 이미지를 한쌍씩 획득하는 단계(S10)와, 상기 획득된 각각의 한쌍의 이미지를 서로 비교 분석하여 동일한 분석자료로 통과된 이미지 중 어느 하나를 표준 이미지로 선택하는 단계(S40)를 포함하여 이루어진다.Here, in the preparing of the standard image, three primary colors of light (Red), blue (Blue), and green (Green) can be irradiated, and the three powers of 256 by adjusting the brightness of each color (256 3 ). Acquiring a pair of 256 quadratic (256 3 ) branches by a pair of RGB LEDs 31 capable of expressing colors of branches (S10), and comparing the obtained pairs of images with each other to analyze the same data. And selecting one of the images passed as a standard image (S40).

구체적으로 표준 이미지를 준비하는 단계는 머신비젼 시스템의 설치 환경, 또는 검사하고자 하는 제품(100)의 상태(크기, 모양, 색갈 등)에 따라 특정 파장대에서 검사가 잘되는 현상에 대응하기 위한 것으로, 도 4에 도시한 바와 같이 256의 3승(2563) 가지의 색상으로 제품 이미지를 각각 한쌍씩 준비하는 단계(S10)와, 각각의 한쌍의 이미지를 PC 및 S/W로 서로 비교 분석하는 단계(S20)와, 한쌍의 이미지가 동일한 자료로서 판독 가능한지 여부를 결정하는 단계(S30)와, 동일한 자료로서 판독이 불가능하면 이미지를 삭제(S35)하고, 동일한 자료로서 판독된 이미지 중 어느 하나는 표준 이미지로 선택(S40)하는 단계를 포함하여 이루어진다.Specifically, the preparing of the standard image corresponds to a phenomenon in which inspection is performed well in a specific wavelength band according to the installation environment of the machine vision system or the state (size, shape, color, etc.) of the product 100 to be inspected. As shown in FIG. 4, a pair of product images are prepared in pairs of 256 colors of 256 (256 3 ) (S10), and each pair of images is analyzed by PC and S / W. S20), and determining whether the pair of images can be read as the same material (S30), and if it is impossible to read with the same material, the image is deleted (S35), and any one of the images read as the same material is a standard image. The step S40 is made.

다음 조명모듈은 선택된 표준 이미지 획득에 사용된 파장대로 셋팅(S50)하여 제품(100)에 조사하면 양질의 제품(100) 이미지를 획득할 수 있다.Next, the lighting module may be set to the wavelength used to acquire the selected standard image (S50) and irradiate the product 100 to obtain a good image of the product 100.

이상 본 발명이 양호한 실시예와 관련하여 설명되었으나, 본 발명의 기술 분야에 속하는 자들은 본 발명의 본질적인 특성에서 벗어나지 않는 범위 내에 다양한 변경 및 수정을 용이하게 실시할 수 있을 것이다. 그러므로 개시된 실시예는 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 하고, 본 발명의 진정한 범위는 전술한 설명이 아니라 특허청구범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will readily occur to those skilled in the art without departing from the spirit and scope of the invention. Therefore, it should be understood that the disclosed embodiments are to be considered in an illustrative rather than a restrictive sense, and that the true scope of the invention is indicated by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof, .

도 1은 종래 머신비젼 시스템에 사용된 조명장치의 실시예를 나타낸 도면이고,1 is a view showing an embodiment of a lighting apparatus used in a conventional machine vision system,

도 2는 본 발명에 따른 머신비젼 시스템의 조명모듈의 일예를 나타낸 도면이고,2 is a view showing an example of the lighting module of the machine vision system according to the present invention,

도 3은 빛의 삼원색을 나타낸 도면이고,3 is a view showing three primary colors of light,

도 4는 본 발명에 따른 머신비젼 시스템의 조명방법 순서를 나타낸 도면이다.4 is a view showing a procedure of the illumination method of the machine vision system according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

10: 비젼장치 11: 케이스10: Vision device 11: case

13: 이미지 센서 14: 대물렌즈13: Image sensor 14: Objective lens

15: 미러 21: 필터15: mirror 21: filter

22: 조명장치 31: RGB LED22: lighting device 31: RGB LED

32: 광조사부 33: 제어부32: light irradiation unit 33: control unit

100: 제품100: Product

Claims (3)

제품(100)의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에 사용되는 구성으로, 양질의 제품 이미지를 획득하기 위해 조사되는 조명모듈에 있어서,In the lighting module to be used in the machine vision system to determine the good quality by analyzing the image of the product 100, in the illumination module irradiated to obtain a good product image, 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED(31)를 구비한 광조사부(32)와;Red, Blue, and Green, the three primary colors of light, can be irradiated separately, and RGB LEDs (31) capable of expressing 256 powers (256 3 ) of 256 colors by adjusting the brightness of each color A light irradiation part 32 having a; 상기 RGB LED(31)의 각 색상의 밝기를 조절하여 상기 제품에 적합한 파장대의 조명을 조사하도록 제어하는 제어부(33);A control unit 33 for controlling the brightness of each color of the RGB LED 31 to control illumination of a wavelength band suitable for the product; 를 포함하여 구성되는 것을 특징으로 하는 머신비젼 시스템의 조명모듈.Lighting module of the machine vision system, characterized in that comprises a. 제품(100)의 이미지를 분석하여 양품 여부를 판단하는 머신비젼 시스템에서, 양질의 제품 이미지를 획득하기 위한 조명방법에 있어서,In the machine vision system for analyzing the image of the product 100 to determine whether or not good quality, in the illumination method for obtaining a good product image, 상기 제품의 양품 여부를 판단하기 위해 기준이 되는 표준 이미지를 준비하는 단계;Preparing a standard image as a reference for determining whether the product is good or bad; 상기 표준 이미지 획득에 사용된 파장대로 조사되도록 조명모듈을 셋팅하는 단계;Setting an illumination module to be irradiated with the wavelength used for obtaining the standard image; 를 포함하여 이루어지는 것을 특징으로 하는 머신비젼 시스템의 조명방법.Illumination method of a machine vision system comprising a. 제 2항에 있어서, 3. The method of claim 2, 상기 표준 이미지를 준비하는 단계는,Preparing the standard image, 빛의 삼원색인 빨강(Red), 파랑(Blue), 녹색(Green)이 각각 조사 가능하며, 각 색상의 밝기 조절을 통해 256의 3승(2563) 가지의 색상 표현이 가능한 RGB LED(31)로 256의 3승(2563) 가지의 이미지를 한쌍씩 획득하는 단계(S10)와;Red, Blue, and Green, the three primary colors of light, can be irradiated separately, and RGB LEDs (31) capable of expressing 256 powers (256 3 ) of 256 colors by adjusting the brightness of each color Acquiring a pair of images of three powers 256 3 by 256 (S10); 상기 획득된 각각의 한쌍의 이미지를 서로 비교 분석하여 동일한 분석자료로 통과된 이미지 중 어느 하나를 표준 이미지로 선택하는 단계(S40);Comparing the acquired pair of images with each other and selecting one of the images passed through the same analysis data as a standard image (S40); 를 포함하여 이루어지는 것을 특징으로 하는 머신비젼 시스템의 조명방법.Illumination method of a machine vision system comprising a.
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