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. 2021 Aug 3;21(15):5239. doi: 10.3390/s21155239

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Eight representative examples demonstrating how numbers in original images are detected and classified in their orders and positions, showing the binarized image (left), the original image with the cropped areas for the numbers (middle), and the corresponding parameter values (right) of each example; (a) the case in which all the numbers without any additional numbers are present in the correct orders and the proper positions within the contour; (b) the case in which all the numbers without any additional numbers are present in the correct orders within the contour but not in proper positions; (c) the case in which all the numbers without any additional numbers are present in the correct orders but neither in the proper positions nor within the contour; (d) the case in which all the numbers without any additional numbers are present in the correct orders within the contour but not in the proper positions; (e) the case in which some numbers are missing and the presented numbers are not in proper positions but mostly in correct order within the contour; (f) the case in which there are additional numbers not belonging to a clock but the numbers are in correct orders within the contour; (g) the case in which some numbers are missing and the presented numbers are not in proper positions but mostly in correct order within the contour; and (h) the case in which many numbers are missing and the presented numbers are not in proper positions and correct order but within the contour. * Total score/score of contour/score of numbers/score of hands/score of center.

Eight representative examples demonstrating how numbers in original images are detected and classified in their orders and positions, showing the binarized image (left), the original image with the cropped areas for the numbers (middle), and the corresponding parameter values (right) of each example; (a) the case in which all the numbers without any additional numbers are present in the correct orders and the proper positions within the contour; (b) the case in which all the numbers without any additional numbers are present in the correct orders within the contour but not in proper positions; (c) the case in which all the numbers without any additional numbers are present in the correct orders but neither in the proper positions nor within the contour; (d) the case in which all the numbers without any additional numbers are present in the correct orders within the contour but not in the proper positions; (e) the case in which some numbers are missing and the presented numbers are not in proper positions but mostly in correct order within the contour; (f) the case in which there are additional numbers not belonging to a clock but the numbers are in correct orders within the contour; (g) the case in which some numbers are missing and the presented numbers are not in proper positions but mostly in correct order within the contour; and (h) the case in which many numbers are missing and the presented numbers are not in proper positions and correct order but within the contour. * Total score/score of contour/score of numbers/score of hands/score of center.