WO2022017197A1 - Intelligent product quality inspection method and apparatus - Google Patents
Intelligent product quality inspection method and apparatus Download PDFInfo
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- WO2022017197A1 WO2022017197A1 PCT/CN2021/105434 CN2021105434W WO2022017197A1 WO 2022017197 A1 WO2022017197 A1 WO 2022017197A1 CN 2021105434 W CN2021105434 W CN 2021105434W WO 2022017197 A1 WO2022017197 A1 WO 2022017197A1
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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
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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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
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8883—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges involving the calculation of gauges, generating models
Definitions
- the invention relates to the field of industrial intelligence, and more particularly, to an intelligent product quality detection method and device.
- Visual inspection refers to the use of machines instead of human eyes to make measurements and judgments, and to convert the captured target into image signals through machine vision products (ie, image capture devices, divided into CMOS and CCD), and transmit them to a dedicated image processing system.
- machine vision products ie, image capture devices, divided into CMOS and CCD
- the pixel distribution, brightness, color and other information are converted into digital signals; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the on-site equipment actions according to the results of the discrimination.
- Visual inspection is invaluable in its ability to detect defects and prevent defective products from being shipped to consumers.
- the feature of machine vision inspection is to improve the flexibility and automation of production.
- machine vision In some dangerous working environments that are not suitable for manual work or where artificial vision is difficult to meet the requirements, machine vision is often used to replace artificial vision; at the same time, in the process of mass industrial production, using artificial vision to check product quality is inefficient and not accurate.
- the use of machine vision detection methods can greatly improve production efficiency and production automation.
- machine vision is easy to realize information integration, which is the basic technology to realize computer integrated manufacturing. Visual inspection involves taking an image of an object, detecting it and converting it into data for the system to process and analyze, ensuring compliance with its manufacturer's quality standards. Objects that do not meet quality standards are tracked and rejected.
- the workflow of product inspection is generally as follows: the camera program takes a picture and saves the photo to a certain location on the disk, the quality inspection model reads the photo from the disk to start the quality inspection, and sends the inspection result to the result processing program after completion.
- These programs are generally run in series, which leads to the following defects in the existing visual inspection: 1.
- the dependencies between programs are too high and the stability is poor.
- the quality detection model relies on the camera program to output photos. Once the disk read and write errors, the whole solution will not work; the result processing program depends on the output of the quality detection model. When there are multiple result processing programs, a problem in one of the links will lead to an error in the overall solution.
- the photo read and write time is long and the efficiency is low.
- the disk read and write time is long.
- a photo is larger than 4M, even if SSD is used, it takes nearly 1s to write or read a single photo to the disk.
- the efficiency is too low for industrial testing. Therefore, there is an urgent need for an intelligent product quality detection method and device that can improve stability and efficiency.
- the present invention provides an intelligent product quality detection method and device, which can improve the stability and efficiency of product quality detection.
- An intelligent product quality detection method comprising the following steps:
- Step S1 collecting image data for the product
- Step S2 Detecting the product according to the collected image data to generate a detection result
- Step S3 analyze and process the product according to the detection result
- the image data and detection results set a storage time limit.
- the image acquisition program is started, and the image acquisition program sends an instruction to make the photographing device capture and generate an image of the product to be detected.
- a storage device is used to store the photographed image.
- the inspection program reads the image data from the storage device, detects the product according to the image data, generates inspection results for the inspection program after product inspection, and uses the storage device to store the generated inspection results.
- the product processing program reads the product detection result from the storage device, and performs corresponding processing on the product according to the product detection result.
- the inspection program relies on the images captured by the image acquisition program, if the reading and writing time of the image data is too long or an error occurs during the reading and writing process, the inspection program will not be able to output the inspection results normally, and the product inspection will not be carried out.
- the product processing procedure is also dependent on the inspection procedure, and the process of generating or reading the inspection results is too slow, which will cause the procedure to be blocked, and the inspection of the product cannot be carried out.
- This solution starts from improving the stability of the entire product inspection, and sets a storage time limit for image data and inspection results.
- i is the current image serial number of the currently detected product
- C k is the detection time of the k-th image of the currently detected product
- F is the time interval for the image to be stored
- the storage time t is calculated by data fitting according to the image retention time of a plurality of products, and the storage time limit is set as t+d according to the storage time t, and the d is a fixed constant.
- the image detection time of the product and the image storage time interval first obtain the image detection time of the product and the image storage time interval, and then calculate the image retention time of m products through the calculation formula of image retention time, and each product has n images.
- Collect the image retention time T ij (i ⁇ (1,m), j ⁇ (1,n)) of each image obtain the continuous function of the storage time t from the collected image retention time T ij, and according to the storage time t
- step S1 includes:
- Step S1.1 create a first queue
- Step S1.2 image capturing of the product and generating image data, and storing the generated image data in the first queue
- Step S1.3 If there is a product without image capture and image data generation, proceed to step S1.2, otherwise end step S1;
- the step S2 includes:
- Step S2.1 create a second queue
- Step S2.2 According to the image data stored in the first queue, the corresponding products are detected and the detection results are generated, and the generated detection results are stored in the second queue;
- Step S2.3 if the product corresponding to the image data in the first queue has not been detected and the detection result has not been generated, continue to perform step S2.2, otherwise perform step S2.4;
- Step S2.4 if step S1 has not ended, wait for the first queue to store the newly generated image data, then continue to execute step S2.1; if step S1 has ended, end step S2;
- the step S3 includes:
- Step S3.1 analyze according to the detection results in the second cohort
- Step S3.2 processing according to the analysis result
- the steps S1, S2, and S3 are executed in parallel without interfering with each other; if the image data in the first queue remains in the first queue for longer than the storage time limit, the image data exceeding the storage time limit is automatically cleared; The time when the detection results in the second queue are stored in the second queue exceeds the storage time limit, the detection results that exceed the storage time limit are automatically cleared.
- queues are created according to product information.
- the queues are of different types. Different types of queues store different data. Problems in one queue will not affect the other queue. At the same time, this facilitates the isolation of the two queues and reduces the The stability and performance problems of image data, especially image data with large pixels, are caused when transferring between programs.
- the step S1, step S2, and step S3 are performed in parallel, without interfering with each other. Specifically, the image data is generated after the current product is photographed, and then stored in the first queue. If there is a next product, the steps of photographing, generating and storing are repeated. That is, step S1 is repeated until all products are photographed; the detection step is performed simultaneously with the photographing step.
- step S2 When there are product images that have not been read in the first queue, the product images in the first queue are read, and the product images are paired according to the product images. The products are tested, and the test results are stored in the second queue, and the test steps are repeated until all products are tested, that is, step S2 is repeated. Because step S1 and step S2 are performed at the same time, step S2 does not need to wait for all product images to be photographed in step S1 before starting the detection, which saves time. In the same way, the processing step is carried out at the same time as the shooting step and the detection step. When there is an unread product test result in the second queue, the test result in the second queue is read, and the corresponding product is carried out according to the test result.
- step S3 The process is performed until all product detection results are analyzed, that is, step S3 is repeated. Because step S3 does not need to wait for all products to be photographed in step S1, and does not need to wait for step S2 to detect all products before processing, time is saved and the performance of the entire solution is improved.
- the image data and detection results in the queue have a storage time limit, and the image data and detection results that lead to timeout will be automatically cleared to maintain the stability of the model and avoid system paralysis caused by reading and writing high-pixel images and analyzing complex models.
- step S1.1 is specifically to create a plurality of first queues according to the number of products; the step S2.1 is specifically to create a plurality of second queues according to the number of detection models for detecting the products.
- multiple products can correspondingly create multiple first and second queues, and each queue can perform steps at the same time, enabling multiple products to perform quality inspection at the same time, effectively utilizing system resources, and improving efficiency.
- the isolation also ensures the stability of the scheme.
- the image data collected in the step S1 is stored in the form of a binary stream, and the step S2 acquires the image data in the form of a binary stream to detect the product.
- a binary stream-based access interface is defined.
- the photos captured in step S1 are stored in the cache by calling the storage interface in the form of binary streams, and step S2 is directly obtained.
- Binary stream saving the time of image transcoding.
- An intelligent product quality detection device comprising: an image acquisition module, a storage module, a detection module, a processing module and an intelligent management module;
- the image collection module collects image data for the product, and the collected image data is stored in the storage module;
- the detection module detects the product according to the image data, and the detection result is stored in the storage module, and the image data is the image data stored in the storage module by the image acquisition module;
- the processing module reads the product detection result from the storage module, analyzes according to the detection result, and performs subsequent processing on the corresponding product;
- the intelligent management module manages the data in the storage module.
- the intelligent management module includes: a format detection unit and a storage time limit unit; the format detection unit is used to detect the format of the data in the storage module; the storage time limit unit is used to set the storage time limit of the data in the storage module.
- the storage module implements the storage function with a cache.
- the cache improves the speed of reading and writing images and reading and writing detection results.
- the storage module includes: a first storage unit and a second storage unit; the first storage unit is used for storing product images; the second storage unit is used for storing product detection results.
- the storage module stores the image data in a binary stream.
- the storage module realizes the storage function with a cache, which improves the speed of reading and writing images and reading and writing detection results.
- Fig. 1 is the flow chart of the present invention
- FIG. 2 is a module relationship diagram of the present invention.
- Fig. 1 is the flow chart of the present invention, as shown in the figure, a kind of intelligent product quality detection method of the present embodiment, comprises the following steps:
- Step S1 collecting image data for the product
- Step S2 Detecting the product according to the collected image data to generate a detection result
- Step S3 analyze and process the product according to the detection result
- the image data and detection results set a storage time limit.
- the image acquisition program is started, and the image acquisition program sends an instruction to make the photographing device capture and generate an image of the product to be detected.
- a storage device is used to store the photographed image.
- the inspection program reads the image data from the storage device, detects the product according to the image data, generates inspection results for the inspection program after product inspection, and uses the storage device to store the generated inspection results.
- the product processing program reads the product detection result from the storage device, and performs corresponding processing on the product according to the product detection result.
- the inspection program relies on the images captured by the image acquisition program, if the reading and writing time of the image data is too long or an error occurs during the reading and writing process, the inspection program will not be able to output the inspection results normally, and the product inspection will not be carried out.
- the product processing procedure is also dependent on the inspection procedure, and the process of generating or reading the inspection results is too slow, which will cause the procedure to be blocked, and the inspection of the product cannot be carried out.
- This solution starts from improving the stability of the entire product inspection, and sets a storage time limit for image data and inspection results.
- i is the current image serial number of the currently detected product
- C k is the detection time of the k-th image of the currently detected product
- F is the time interval for the image to be stored
- the storage time t is calculated by data fitting, and the storage time limit is set to t+d according to the storage time t, and the d is a fixed constant.
- the image detection time of the product and the image storage time interval first obtain the image detection time of the product and the image storage time interval, and then calculate the image retention time of m products through the calculation formula of image retention time, and each product has n images.
- Collect the image retention time T ij (i ⁇ (1,m), j ⁇ (1,n)) of each image obtain the continuous function of the storage time t from the collected image retention time T ij, and according to the storage time t
- step S1 includes:
- Step S1.1 create a first queue
- Step S1.2 image capturing of the product and generating image data, and storing the generated image data in the first queue
- Step S1.3 If there is a product without image capture and image data generation, proceed to step S1.2, otherwise end step S1;
- the step S2 includes:
- Step S2.1 create a second queue
- Step S2.2 According to the image data stored in the first queue, the corresponding products are detected and the detection results are generated, and the generated detection results are stored in the second queue;
- Step S2.3 if the product corresponding to the image data in the first queue has not been detected and the detection result has not been generated, continue to perform step S2.2, otherwise perform step S2.4;
- Step S2.4 if step S1 has not ended, wait for the first queue to store the newly generated image data, then continue to execute step S2.1; if step S1 has ended, end step S2;
- the step S3 includes:
- Step S3.1 analyze according to the detection results in the second cohort
- Step S3.2 processing according to the analysis result
- the steps S1, S2, and S3 are executed in parallel without interfering with each other; if the image data in the first queue remains in the first queue for longer than the storage time limit, the image data exceeding the storage time limit is automatically cleared; The time when the detection results in the second queue are stored in the second queue exceeds the storage time limit, the detection results that exceed the storage time limit are automatically cleared.
- queues are created according to product information.
- the queues are of different types. Different types of queues store different data. Problems in one queue will not affect the other queue.
- the stability and performance problems of image data, especially image data with large pixels, are caused when transferring between programs.
- the step S1, step S2, and step S3 are performed in parallel, without interfering with each other. Specifically, the image data is generated after the current product is photographed, and then stored in the first queue. If there is a next product, the steps of photographing, generating and storing are repeated. That is, step S1 is repeated until all products are photographed; the detection step is performed simultaneously with the photographing step.
- step S2 When there are product images that have not been read in the first queue, the product images in the first queue are read, and the product images are paired according to the product images. The products are tested, and the test results are stored in the second queue, and the test steps are repeated until all products are tested, that is, step S2 is repeated. Because step S1 and step S2 are performed at the same time, step S2 does not need to wait for all product images to be photographed in step S1 before starting the detection, which saves time. In the same way, the processing step is carried out at the same time as the shooting step and the detection step. When there is an unread product test result in the second queue, the test result in the second queue is read, and the corresponding product is carried out according to the test result.
- step S3 The process is performed until all product detection results are analyzed, that is, step S3 is repeated. Because step S3 does not need to wait for all products to be photographed in step S1, and does not need to wait for step S2 to detect all products before processing, time is saved and the performance of the entire solution is improved.
- the image data and detection results in the queue have a storage time limit, and the image data and detection results that lead to timeout will be automatically cleared to maintain the stability of the model and avoid system paralysis caused by reading and writing high-pixel images and analyzing complex models.
- step S1.1 is specifically to create a plurality of first queues according to the number of products; the step S2.1 is specifically to create a plurality of second queues according to the number of detection models for detecting the products.
- multiple products can correspondingly create multiple first and second queues, and each queue can perform steps at the same time, enabling multiple products to perform quality inspection at the same time, effectively utilizing system resources, and improving efficiency.
- the isolation also ensures the stability of the scheme.
- the image data collected in the step S1 is stored in the form of a binary stream, and the step S2 acquires the image data in the form of a binary stream to detect the product.
- a binary stream-based access interface is defined.
- the photos captured in step S1 are stored in the cache by calling the storage interface in the form of binary streams, and step S2 is directly obtained.
- Binary stream saving the time of image transcoding.
- FIG. 2 is a module relationship diagram of the present invention, as shown in the figure, including: an image acquisition module, a storage module, a detection module, a processing module and an intelligent management module;
- the image collection module collects image data for the product, and the collected image data is stored in the storage module;
- the detection module detects the product according to the image data, and the detection result is stored in the storage module, and the image data is the image data stored in the storage module by the image acquisition module;
- the processing module reads the product detection result from the storage module, analyzes according to the detection result, and performs subsequent processing on the corresponding product;
- the intelligent management module manages the data in the storage module.
- the intelligent management module includes: a format detection unit and a storage time limit unit; the format detection unit is used to detect the format of the data in the storage module; the storage time limit unit is used to set the storage time limit of the data in the storage module.
- the storage module implements the storage function with a cache.
- the cache improves the speed of reading and writing images and reading and writing detection results.
- the storage module includes: a first storage unit and a second storage unit; the first storage unit is used for storing product images; the second storage unit is used for storing product detection results.
- the storage module stores the image data in a binary stream.
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Abstract
Description
Claims (10)
- 一种智能化的产品质量检测方法,其特征在于,包括以下步骤:An intelligent product quality detection method is characterized in that, comprises the following steps:步骤S1:对产品进行图像数据采集;Step S1: collecting image data for the product;步骤S2:根据采集到图像数据对产品进行检测生成检测结果;Step S2: Detecting the product according to the collected image data to generate a detection result;步骤S3:根据检测结果进行分析并且对产品进行处理;Step S3: analyze and process the product according to the detection result;所述图像数据和检测结果设定了存储时限。The image data and detection results set a storage time limit.
- 根据权利要求1所述的一种智能化的产品质量检测方法,其特征在于,所述存储时限的设定过程为:A kind of intelligent product quality detection method according to claim 1, is characterized in that, the setting process of described storage time limit is:获取产品的图像检测时间、图像存入缓存时间间隔;Obtain the image detection time of the product and the image storage time interval;根据图像检测时间、图像存入缓存时间间隔计算出图像存留时间;Calculate the image retention time according to the image detection time and the image storage time interval;所述图像存留时间的计算公式为:The calculation formula of the image retention time is:其中,i为当前被检测产品的当前图像序号,C k为当前被检测产品第k张图像的检测时间,F为图像用于存储的时间间隔; Among them, i is the current image serial number of the currently detected product, C k is the detection time of the k-th image of the currently detected product, and F is the time interval for the image to be stored;根据多个产品的图像存留时间通过数据拟合计算出存储时间t,根据存储时间t将存储时限设定为t+d,所述d为常量。The storage time t is calculated by data fitting according to the image retention time of a plurality of products, and the storage time limit is set as t+d according to the storage time t, and the d is a constant.
- 根据权利要求1所述的一种智能化的产品质量检测方法,其特征在于,所述步骤S1包括:步骤S1.1:创建第一队列;The intelligent product quality detection method according to claim 1, wherein the step S1 comprises: step S1.1: creating a first queue;步骤S1.2:对产品进行图像捕捉及生成图像数据,将生成的图像数据存入第一队列;Step S1.2: image capturing of the product and generating image data, and storing the generated image data in the first queue;步骤S1.3:若存在产品未进行图像捕捉及生成图像数据,则继续执行步骤S1.2,否则结束步骤S1;Step S1.3: If there is a product without image capture and image data generation, proceed to step S1.2, otherwise end step S1;所述步骤S2包括:The step S2 includes:步骤S2.1:创建第二队列;Step S2.1: create a second queue;步骤S2.2:根据第一队列所存放的图像数据对相应的产品进行检测及生成检测结果,将生成的检测结果存入第二队列;Step S2.2: According to the image data stored in the first queue, the corresponding products are detected and the detection results are generated, and the generated detection results are stored in the second queue;步骤S2.3:若第一队列中的图像数据相应的产品存在未进行检测及生成检测结果,则继续执行步骤S2.2,否则执行步骤S2.4;Step S2.3: if the product corresponding to the image data in the first queue has not been detected and the detection result has not been generated, continue to perform step S2.2, otherwise perform step S2.4;步骤S2.4:若步骤S1未结束,则等待第一队列存入新生成的图像数据之后,继续执行步骤S2.1;若步骤S1已结束,则结束步骤S2;Step S2.4: if step S1 has not ended, wait for the first queue to store the newly generated image data, then continue to execute step S2.1; if step S1 has ended, end step S2;所述步骤S3包括:The step S3 includes:步骤S3.1:根据第二队列中的检测结果进行分析;Step S3.1: analyze according to the detection results in the second cohort;步骤S3.2:根据分析结果进行处理;Step S3.2: processing according to the analysis result;所述步骤S1、步骤S2、步骤S3并行执行,互不干涉;若第一队列中的图像数据存留在第一队列中的时间超过存储时限,则自动清除其中超过存储时限的图像数据;若第二队列中的检测结果存留在第二队列中的时间超过存储时限,则自动清除其中超过存储时限的检测结果。The steps S1, S2, and S3 are executed in parallel without interfering with each other; if the image data in the first queue remains in the first queue for longer than the storage time limit, the image data exceeding the storage time limit is automatically cleared; The time when the detection results in the second queue are stored in the second queue exceeds the storage time limit, the detection results that exceed the storage time limit are automatically cleared.
- 根据权利要求3所述的一种智能化的产品质量检测方法,其特征在于,所述步骤S1.1具体为根据产品数量创建多个第一队列;所述步骤S2.1具体为根据对产品进行检测的检测模型数量创建多个第二队列。An intelligent product quality detection method according to claim 3, characterized in that, the step S1.1 is specifically to create a plurality of first queues according to the number of products; The number of detection models to perform detection creates multiple second queues.
- 根据权利要求1所述的一种智能化的产品质量检测方法,其特征在于,所述图像数据以二进流形式进行存储。The intelligent product quality detection method according to claim 1, wherein the image data is stored in the form of binary stream.
- 一种智能化的产品质量检测装置,其特征在于,包括:图像采集模块、存储模块、检测模块、处理模块和智能管理模块;An intelligent product quality detection device is characterized in that it comprises: an image acquisition module, a storage module, a detection module, a processing module and an intelligent management module;所述图像采集模块对产品进行图像数据采集,采集到的图像数据存入存储模块;The image collection module collects image data for the product, and the collected image data is stored in the storage module;所述检测模块根据图像数据对产品进行检测,检测的结果存入存储模块,所述图像数据为图像采集模块存入存储模块的图像数据;The detection module detects the product according to the image data, and the detection result is stored in the storage module, and the image data is the image data stored in the storage module by the image acquisition module;所述处理模块从存储模块中读取产品检测结果,根据检测结果进行分析并且对相应的产品作后续处理;The processing module reads the product detection result from the storage module, analyzes according to the detection result, and performs subsequent processing on the corresponding product;所述智能管理模块对存储模块内的数据进行管理。The intelligent management module manages the data in the storage module.
- 根据权利要求6所述的一种智能化的产品质量检测装置,其特征在于,所述智能管理模块包括:格式检测单元和存储时限单元;所述格式检测单元用于检测存储模块内数据的格式;所述存储时限单元用于设定存储模块内数据的存储时限。The intelligent product quality detection device according to claim 6, wherein the intelligent management module comprises: a format detection unit and a storage time limit unit; the format detection unit is used to detect the format of the data in the storage module ; The storage time limit unit is used to set the storage time limit of the data in the storage module.
- 根据权利要求6所述的一种智能化的产品质量检测装置,其特征在于,所述存储模块以缓存实现存储功能。The intelligent product quality detection device according to claim 6, wherein the storage module realizes the storage function by means of a cache.
- 根据权利要求7所述的一种智能化的产品质量检测装置,其特征在于,所述存储模块包括:第一存储单元和第二存储单元;所述第一存储单元用于存储产品图像;第二存储单元用于存储产品检测结果。The intelligent product quality detection device according to claim 7, wherein the storage module comprises: a first storage unit and a second storage unit; the first storage unit is used for storing product images; The second storage unit is used to store the product inspection results.
- 根据权利要求6所述的一种智能化的产品质量检测装置,其特征在于,所述存储模块以二进流存储图像数据。The intelligent product quality detection device according to claim 6, wherein the storage module stores the image data in a binary stream.
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