CASME II Dataset

The Chinese Academy of Sciences Micro-Expression dataset (CASME II) consists of 255 videos, elicited from 26 participants. The videos are recorded using Point Gray GRAS-03K2C camera which has a frame rate of 200fps. The average video length is 0.34s, equivalent to 68 frames. Each video’s emotion label is annotated by two coders, where the reliability is 0.846.

All the images are cropped to 170×140 pixels. The ground-truth information provided by the database include the emotion state, the action unit, the onset, apex and offset frame indices. The videos are grouped into seven categories: others (99 videos), disgust (63 videos), happiness (32 videos), repression (27 videos), surprise (25 videos), sadness (7 videos) and fear (2 videos).

中国科学院微表情数据集（CASME II）由26位参与者提供的255个视频组成。这些视频采用Point Gray GRAS-03K2C相机录制，该相机具有200fps的帧率。视频的平均长度为0.34秒，相当于68帧。每个视频的情绪标签由两位编码者标注，其可靠性为0.846。所有图像均裁剪至170×140像素。数据库提供的真实信息包括情绪状态、动作单元、起始帧、峰值帧和结束帧的索引。视频被分为七个类别：其他（99个视频）、厌恶（63个视频）、快乐（32个视频）、压抑（27个视频）、惊讶（25个视频）、悲伤（7个视频）和恐惧（2个视频）。