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arXiv 2103.00658cs.CV
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基于规则和机器学习方法的情感识别技术

Emotion recognition techniques with rule based and machine learning approaches

The University of New Mexico(新墨西哥大学);Intel Corporation(英特尔公司)

Aasma Aslam, Babar Hussian

摘要:

使用数字图像处理的情感识别是一项繁杂的任务,因为面部情感依赖于扭曲的面部特征以及性别、年龄和文化。此外,还有几个因素,如不同的照明和复杂的设置,增加了面部表情识别的复杂性。在本文中,我们使用了四个显著的面部特征,眉毛,嘴巴开口,嘴角,额头皱纹,以识别情绪从正常,闭塞和部分闭塞的图像。我们采用了基于规则的方法,并开发了新的方法来提取上述面部特征相似的本地位模式,使用新的技术。我们提出了新的方法来检测眼睛的位置,眉毛收缩,嘴角。对于眼睛检测,提出的方法是增强铬红(ECrR)和抑制铬蓝(SCrB),其结果在98%的准确度。此外,对于眉毛收缩检测,我们提出了两种技术:(1)形态梯度图像强度(MGII)和(2)曲率线度(DCL)。此外,我们提出了一种新的嘴角检测方法。为了达到分类的目的,我们使用一个独立的分类器,多数投票(MV)和加权多数投票(WMV)的方法,模仿人类情绪敏感度(HES)。这些方法易于实现,提高了结果的准确性,并且最适合使用部分遮挡图像进行情感识别。从结果可以确定,我们的方法优于以前的方法。总体准确率约为94%。使用处理器内核i5处理一张图像的时间约为0.12秒。

英文摘要:

Emotion recognition using digital image processing is a multifarious task because facial emotions depend on warped facial features as well as on gender, age, and culture. Furthermore, there are several factors such as varied illumination and intricate settings that increase complexity in facial emotion recognition. In this paper, we used four salient facial features, Eyebrows, Mouth opening, Mouth corners, and Forehead wrinkles to identifying emotions from normal, occluded and partially-occluded images. We have employed rule-based approach and developed new methods to extract aforementioned facial features similar to local bit patterns using novel techniques. We propose new methods to detect eye location, eyebrow contraction, and mouth corners. For eye detection, the proposed methods are Enhancement of Cr Red (ECrR) and Suppression of Cr Blue (SCrB) which results in 98% accuracy. Additionally, for eyebrow contraction detection, we propose two techniques (1) Morphological Gradient Image Intensity (MGII) and (2) Degree of Curvature Line (DCL). Additionally, we present a new method for mouth corners detection. For classification purpose, we use an individual classifier, majority voting (MV) and weighted majority voting (WMV) methods which mimic Human Emotions Sensitivity (HES). These methods are straightforward to implement, improve the accuracy of results, and work best for emotion recognition using partially occluded images. It is ascertained from the results that our method outperforms previous approaches. Overall accuracy rates are around 94%. The processing time on one image using processor core i5 is ~0.12 sec.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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