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- W2897549254 abstract "The impressive performance of utilizing deep learning or neural network has attracted much attention in both the industry and research communities, especially towards computer vision aspect related applications. Despite its superior capability of learning, generalization and interpretation on various form of input, micro-expression analysis field is yet remains new in applying this kind of computing system in automated expression recognition system. A new feature extractor, BiVACNN is presented in this paper, where it first estimates the optical flow fields from the apex frame, then encode the flow fields features using CNN. Concretely, the proposed method consists of three stages: apex frame acquisition, multivariate features formation and feature learning using CNN. In the multivariate features formation stage, we attempt to derive six distinct features from the apex details, which include: the apex itself, difference between the apex and onset frames, horizontal optical flow, vertical optical flow, magnitude and orientation. It is demonstrated that utilizing the horizontal and vertical optical flow capable to achieve 80% recognition accuracy in CASME II and SMIC-HS databases." @default.
- W2897549254 created "2018-10-26" @default.
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- W2897549254 date "2018-06-01" @default.
- W2897549254 modified "2023-10-01" @default.
- W2897549254 title "Bi-Directional Vectors from Apex in CNN for Micro-Expression Recognition" @default.
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- W2897549254 doi "https://doi.org/10.1109/icivc.2018.8492829" @default.
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