# US 12,602,829 B2 · Method and device for determining abnormality in image acquisition equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,602,829 B2 - Document ID: US12602829B2 - Status: Granted - Kind: B2 - Application number: 18/409,794 - Filed: 2024-01-11 - Published: 2024-08-08 - Granted: 2026-04-14 - Earliest claimed: 2023-02-07 - Assignees: SK On Co., Ltd. - Applicants: SK On Co., Ltd. - Inventors: Dong Whan Shin; Hye Ju Jang - Web page: https://patentgrep.com/patent/US12602829B2 ## CPC - G06T 7/80: Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration - G01T 7/00: Details of radiation-measuring instruments - G06T 7/0002: {Inspection of images, e.g. flaw detection} - G06T 7/0004: {Industrial image inspection} - G06T 2207/10081: Computed x-ray tomography [CT] - G06T 2207/30108: Industrial image inspection - G06T 2207/30168: Image quality inspection - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00) ## Abstract According to various embodiments, there may be provided a method for determining an abnormality in image acquisition equipment, which includes: acquiring one or more 2-dimensional (2D) images by imaging a specific region; acquiring at least one of an average brightness value, a signal to noise ratio (SNR) value and a contrast to noise ratio (CNR) value for the one or more acquired 2-dimensional images; and determining whether the image acquisition equipment is abnormal based on the at least one of the acquired average brightness value, SNR value and CNR value, and a device therefor. ## Claims ### Claim 1 A method for determining an abnormality in image acquisition equipment, the method comprising: acquiring one or more 2-dimensional (2D) images by imaging a specific region; acquiring at least one of an average brightness value, a signal to noise ratio (SNR) value and a contrast to noise ratio (CNR) value for the one or more acquired 2-dimensional images; and determining whether the image acquisition equipment is abnormal based on the at least one of the acquired average brightness value, SNR value and CNR value wherein the one or more acquired 2-dimensional images comprise at least some of images captured with a sample being placed in the specific region, and images captured with the sample being placed so as not to be overlapped with at least a portion of a specimen when the specimen is placed in the specific region, and the CNR value is acquired based on the sample in each of the one or more 2-dimensional images. ### Claim 2 (depends on 1) The method according to claim 1, wherein the one or more 2-dimensional images are an image for at least one category among a plurality of categories in which original images acquired by image capturing, and preprocessed images before generating a 3-dimensional image based on the original images are divided. ### Claim 3 (depends on 2) The method according to claim 2, wherein the at least one category of the category for the original images and the category for the preprocessed images is characterized in that a category for images captured with the specimen including battery cell type electrodes being placed and a category for images captured with the specimen being removed are divided. ### Claim 4 (depends on 1) The method according to claim 1, wherein, in the step of determining whether the image acquisition equipment is abnormal, if it is determined to be abnormal as a result of the determination, further comprising controlling at least some values of a voltage and a current of a source configured to capture the images, and after performing the step of controlling the at least some values, performing the step of acquiring the at least one value and the step of determining whether the image acquisition equipment is abnormal. ### Claim 5 (depends on 4) The method according to claim 4, wherein, in the step of controlling at least some values, if the step of controlling the voltage with a control value or the step of controlling the current with a control value satisfies a preset control step, further comprising determining and outputting an abnormal state of the source. ### Claim 6 A device for determining an abnormality in image acquisition equipment, the device comprising: an image acquisition unit configured to acquire one or more 2-dimensional images by imaging a specific region; and a performance determination unit configured to acquire at least one of an average brightness value, a signal to noise ratio (SNR) value and a contrast to noise ratio (CNR) value for the one or more acquired 2-dimensional images, and determine whether the image acquisition equipment is abnormal based on the at least one of the acquired average brightness value, SNR value and CNR value wherein the one or more acquired 2-dimensional images comprise at least some of images captured with a sample being placed in the specific region, and images captured with the sample being placed so as not to be overlapped with at least a portion of a specimen when the specimen is placed in the specific region, and the performance determination unit acquires the CNR value based on the sample in each of the one or more 2-dimensional images. ### Claim 7 (depends on 6) The device according to claim 6, wherein the image acquisition unit determines, for the one or more 2-dimensional images, at least one category among a plurality of categories in which original images acquired by image capturing, and preprocessed images before generating a 3-dimensional image based on the original images are divided. ### Claim 8 (depends on 7) The device according to claim 7, wherein the image acquisition unit determines, for the one or more 2-dimensional images in which the category for the original images or the category for the preprocessed images has been determined, a category for the images captured with the specimen being included or a category for the images captured with the specimen being removed. ### Claim 9 (depends on 6) The device according to claim 6, further comprising a source controller configured to control at least some values of a voltage and a current of a source configured to capture the images, if it is determined that the image acquisition equipment is in an abnormal state. ### Claim 10 (depends on 9) The device according to claim 9, wherein the performance determination unit determines and outputs the abnormal state of the source, if it is determined that controlling the voltage with a control value or controlling the current with a control value satisfies a preset control value.