Multi-Scale Primal Feature Based Facial Expression Modeling and Identification

2006 ◽  
Author(s):  
Lijun Yin ◽  
Xiaozhou Wei
Keyword(s):  
Facial Expression ◽  
Multi Scale ◽  
Feature Based ◽  
Facial Expression Modeling

Facial Expression Recognition Based on Monogenic Binary Coding

2014 ◽  
Vol 511-512 ◽  
pp. 437-440
Author(s):  
Xiao Xiao Xia ◽  
Zi Lu Ying ◽  
Wen Jin Chu
Keyword(s):  
Facial Expression ◽  
Facial Expression Recognition ◽  
Local Variation ◽  
Expression Recognition ◽  
Multi Scale ◽  
Linear Discrimination ◽  
Binary Coding ◽  
Japanese Female ◽  
Feature Based ◽  
Better Than

A new method based on Monogenic Binary Coding (MBC) is proposed for facial expression feature extraction and representation. Firstly, monogenic signal analysis is used to extract multi-scale magnitude, orientation and phase components. Secondly, Monogenic Binary Coding (MBC) is used to encode the monogenic local variation and intensity in local regions of each extracted component in each scale and local histograms are built. Then Blocked Fisher Linear Discrimination (BFLD) is used to reduce the dimensionality of histogram features and to enhance discrimination. Finally the three complementary components are fused for more effective facial expression recognition (FER). Experiment results on Japanese female expression database (JAFFE) show that the performance of the fusion method is even better than state-of-the-art local feature based FER methods such as Local Binary Pattern (LBP)+Sparse Representation (SRC), Local Phase Quantization (LPQ)+SRC ,etc.

A Proposal of 3D Feature based on Occupancy of Point Cloud in Multi-Scale Shell Region

2016 ◽  
Vol 136 (8) ◽  
pp. 1078-1084
Author(s):  
Shoichi Takei ◽  
Shuichi Akizuki ◽  
Manabu Hashimoto
Keyword(s):  
Point Cloud ◽  
Multi Scale ◽  
Feature Based ◽  
Shell Region

scholarly journals Human Amygdala Tracks a Feature-Based Valence Signal Embedded within the Facial Expression of Surprise

2017 ◽  
Vol 37 (39) ◽  
pp. 9510-9518 ◽  
Author(s):  
M. Justin Kim ◽  
Alison M. Mattek ◽  
Randi H. Bennett ◽  
Kimberly M. Solomon ◽  
Jin Shin ◽  
...  
Keyword(s):  
Facial Expression ◽  
Feature Based

scholarly journals Image Gradient-based Joint Direct Visual Odometry for Stereo Camera

2017 ◽  
Author(s):  
Jianke Zhu
Keyword(s):  
Visual Odometry ◽  
Research Problem ◽  
Feature Representation ◽  
Local Optimum ◽  
Multi Scale ◽  
Illumination Changes ◽  
Pyramid Scheme ◽  
Gradient Based ◽  
Feature Based ◽  
Dense 3D Reconstruction

Visual odometry is an important research problem for computer vision and robotics. In general, the feature-based visual odometry methods heavily rely on the accurate correspondences between local salient points, while the direct approaches could make full use of whole image and perform dense 3D reconstruction simultaneously. However, the direct visual odometry usually suffers from the drawback of getting stuck at local optimum especially with large displacement, which may lead to the inferior results. To tackle this critical problem, we propose a novel scheme for stereo odometry in this paper, which is able to improve the convergence with more accurate pose. The key of our approach is a dual Jacobian optimization that is fused into a multi-scale pyramid scheme. Moreover, we introduce a gradient-based feature representation, which enjoys the merit of being robust to illumination changes. Furthermore, a joint direct odometry approach is proposed to incorporate the information from the last frame and previous keyframes. We have conducted the experimental evaluation on the challenging KITTI odometry benchmark, whose promising results show that the proposed algorithm is very effective for stereo visual odometry.

Facial expression awareness based on multi-scale permutation entropy of EEG

2018 ◽  
Vol 21 (4) ◽  
pp. 287 ◽  
Author(s):  
Xiaofeng Liu ◽  
Bin Hu ◽  
Xiangwei Zheng ◽  
Xiaowei Li
Keyword(s):  
Facial Expression ◽  
Permutation Entropy ◽  
Multi Scale
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