LAUSR

Face analysis has been a hot research field in computer vision for decades. The dataset is of vital importance for modern machine learning methods. The paper proposes a flexible CG (Computer Graphics) rendering pipe-line for creating facial image datasets together with automatic ground truth labelling. The proposed pipe-line could produce a huge amount of labelled data fast and in low cost compared to traditional dataset creation methods which need high cost hardware and longtime manual ground truth labelling. The paper also proposes a data capture setup in the CG environment for creating the dataset for facial landmark localization. The effectiveness of the proposed method is verified by cross validation with Multi-PIE dataset. For creating a high quality training dataset, some of the varying factors of the dataset should be considered. The paper analyzes a few varying factors for accurate eye landmark localization, such as eye closure levels, eye and eyebrow shapes and wearing glasses. Based on the benefits of the proposed CG rendering pipe-line, the paper implemented a facial landmark localization system across large face rotation by integrating off-the-shelves algorithms. The experiments on Multi-PIE and real persons show that the implemented system could localize facial landmarks accurately across [−90°, +90°] in yaw rotation in real time.