Performance Comparison of Saliency Detection Methods for Food Region Extraction

Takuya Futagami, N. Hayasaka, T. Onoye
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引用次数: 1

Abstract

Several methods for extracting food regions from food images use visual saliency to improve accuracy. The effectiveness of saliency detection methods for food extraction, however, has not been discussed sufficiently. Thus, the effectiveness of well-known saliency detection methods is compared thoroughly for the future development of highly accurate food-extraction methods. Ten saliency detection methods, which consisted of seven handcrafted feature-based approaches and three deep learning-based approaches, were tested by applying them to 240 food images. The results suggest that MSI, which uses only neural networks without the assumption that food regions tend to be found at the center of images, predicted food regions most accurately in terms of areas under a receiver operating characteristic curve (AUC). Additionally, GMR, which assumes that food regions tend not to be found around the four sides of an image, was also effective on the food extraction task. The AUCs of these methods were more than 4% larger than that of a center model that is frequently used as a baseline for saliency detection. Furthermore, this paper supports these results by comparing other methods and determining the properties of food images.
显著性检测方法在食物区域提取中的性能比较
从食物图像中提取食物区域的几种方法使用视觉显著性来提高准确性。然而,显著性检测方法在食品提取中的有效性还没有得到充分的讨论。因此,对已知的显著性检测方法的有效性进行了全面的比较,为未来开发高精度的食品提取方法提供了基础。10种显著性检测方法,包括7种基于手工特征的方法和3种基于深度学习的方法,通过将它们应用于240张食物图像进行测试。结果表明,仅使用神经网络而不假设食物区域倾向于在图像中心找到的MSI,就接收器操作特征曲线(AUC)下的区域而言,最准确地预测了食物区域。此外,假设食物区域不会在图像的四面周围找到的GMR在食物提取任务中也很有效。这些方法的auc比经常用作显著性检测基线的中心模型的auc大4%以上。此外,本文通过比较其他方法和确定食品图像的性质来支持这些结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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