Figure 5From: A robust SVM classification framework using PSM for multi-class recognition Expression-recognition rates on different features. Green: recognition rate for OVR-SVMs with SIFT. Purple: recognition rate for OVR-SVMs with SURF. Blue: recognition rate for OVR-SVMs with Haar-like. Red: recognition rate for OVR-SVMs with LBP. Features using SURF and SIFT obtained the more accurate results, but the feature extraction speed of SIFT was low.Back to article page