In our previous study, we presented a method of estimating the color of amber using the red, green, and blue (RGB) color space and the hue, saturation, and value (HSV) color space. In particular, the method estimates the color of amber on a target image consisting of four colors (yellow, brown, black, and amber with an outer cover [AOC]). However, because of the existence of amber with a partially exposed outer cover (APEOC), the estimated accuracy of AOCs was 57.1%. In addition, the size of the amber used in the study was approximately 1–2 cm, considering improvements in versatility. It is also necessary to estimate the color of amber with a size of approximately 3–5 mm, which is even smaller. However, because the color of brown amber is similar to yellow amber, the estimation accuracy of amber having a size of less than 1 cm, using conventional methods, was 62.1%. Therefore, in this paper, we propose a method that switches the estimation method in terms of color features and amber of sizes ranging between 1 and 2 cm and those of 1 cm or less. Based on the experimental results of the proposed method, estimation accuracies of 94.1% for 185 ambers with a size of 1–2 cm and 96.0% for 125 ambers with a less than 1 cm were achieved. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

中文翻译：

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分析琥珀色特征和估计琥珀碎片颜色的方法

在我们之前的研究中，我们提出了一种使用红色，绿色和蓝色（RGB）颜色空间以及色相，饱和度和值（HSV）颜色空间估算琥珀色的方法。特别地，该方法估计目标图像上的琥珀色，该目标图像由四种颜色（黄色，棕色，黑色和带有外壳[AOC]的琥珀色）组成。但是，由于存在带有部分裸露外壳（APEOC）的琥珀色，因此AOC的估计准确性为57.1％。此外，考虑到多功能性的提高，研究中使用的琥珀色尺寸约为1-2 cm。还需要估计大约3–5毫米大小的琥珀色，甚至更小。但是，由于棕色琥珀色的颜色类似于黄色琥珀色，因此尺寸小于1厘米的琥珀色的估算精度很高，使用常规方法，为62.1％。因此，在本文中，我们提出了一种根据颜色特征和琥珀色（介于1到2厘米和1厘米或更小的尺寸之间）切换估计方法的方法。根据所提方法的实验结果，对于尺寸为1-2 cm的185个琥珀色，估计精度为94.1％，对于小于1 cm的125个琥珀色，估计精度为96.0％。©2020日本电气工程师学会。由John Wiley＆Sons，Inc.发布 小于1厘米的125个琥珀色达到0％。©2020日本电气工程师学会。由John Wiley＆Sons，Inc.发布 小于1厘米的125个琥珀色达到0％。©2020日本电气工程师学会。由John Wiley＆Sons，Inc.发布