Fig. 2
From: Quantitative comparison of motion history image variants for video-based depression assessment
Process flow of the proposed algorithm. Dashed arrows in feature extraction indicate that features are considered individually or in combination with feature fusion. MHI: Motion History Image, LMHI: Landmark Motion History Image, GMHI: Gabor Motion History Image, HOG: Histogram of Oriented Gradients, LBP: Local Binary Patterns, LPQ: Local Phase Quantization, PCA: Principal Components Analysis, SVM: Support Vector Machine