School of Electronic and Information Engineering, Southwest University, Chongqing, China.
Chongqing Key Laboratory of Non-linear Circuit and Intelligent Information Processing, Southwest University, Chongqing, China.
Comput Intell Neurosci. 2019 Jan 15;2019:1965789. doi: 10.1155/2019/1965789. eCollection 2019.
Hyperspectral imaging (HSI) technology can be used to detect human emotions based on the power of material discrimination from their faces. In this paper, HSI is used to remotely sense and distinguish blood chromophores in facial tissues and acquire an evaluation indicator (tissue oxygen saturation, StO) using an optical absorption model. This study explored facial analysis while people were showing spontaneous expressions of happiness during social interaction. Happiness, as a psychological emotion, has been shown to be strongly linked to other activities such as physiological reaction and facial expression. Moreover, facial expression as a communicative motor behavior likely arises from musculoskeletal anatomy, neuromuscular activity, and individual personality. This paper quantified the neuromotor movements of tissues surrounding some regions of interest (ROIs) on smiling happily. Next, we selected six regions-the forehead, eye, nose, cheek, mouth, and chin-according to a facial action coding system (FACS). Nineteen segments were subsequently partitioned from the above ROIs. The affective data (StO) of 23 young adults were acquired by HSI while the participants expressed emotions (calm or happy), and these were used to compare the significant differences in the variations of StO between the different ROIs through repeated measures analysis of variance. Results demonstrate that happiness causes different distributions in the variations of StO for the above ROIs; these are explained in depth in the article. This study establishes that facial tissue oxygen saturation is a valid and reliable physiological indicator of happiness and merits further research.
高光谱成像（HSI）技术可以利用物质从面部的辨别能力来检测人类的情绪。在本文中，HSI 被用于远程感知和区分面部组织中的血液色素，并使用光学吸收模型获取评估指标（组织氧饱和度，StO）。本研究在人们进行社交互动时自然表现出快乐情绪时对面部进行了分析。快乐作为一种心理情绪，与其他活动（如生理反应和面部表情）密切相关。此外，面部表情作为一种交际运动行为可能源于骨骼肌肉解剖结构、神经肌肉活动和个体个性。本文量化了愉快微笑时周围某些感兴趣区域（ROI）组织的神经运动。接下来，我们根据面部动作编码系统（FACS）选择了六个区域——额头、眼睛、鼻子、脸颊、嘴和下巴。然后从上述 ROI 中划分出 19 个段。通过高光谱成像采集了 23 名年轻成年人的情感数据（StO），同时让参与者表现出情绪（平静或快乐），然后通过重复测量方差分析来比较不同 ROI 之间 StO 变化的显著差异。结果表明，快乐导致上述 ROI 中 StO 变化的分布不同；文章对此进行了深入解释。本研究确立了面部组织氧饱和度是快乐这一有效且可靠的生理指标，值得进一步研究。
