Domain-Specific Face Synthesis for Video Face Recognition from a Single Sample Per Person

The performance of still-to-video FR systems can decline significantly because faces captured in unconstrained operational domain (OD) over multiple video cameras have a different underlying data distribution compared to faces captured under controlled conditions in the enrollment domain (ED) with a still camera. This is particularly true when individuals are enrolled to the system using a single reference still. To improve the robustness of these systems, it is possible to augment the reference set by generating synthetic faces based on the original still. However, without knowledge of the OD, many synthetic images must be generated to account for all possible capture conditions. FR systems may, therefore, require complex implementations and yield lower accuracy when training on many less relevant images. This paper introduces an algorithm for domain-specific face synthesis (DSFS) that exploits the representative intra-class variation information available from the OD. Prior to operation, a compact set of faces from unknown persons appearing in the OD is selected through clustering in the captured condition space. The domain-specific variations of these face images are projected onto the reference stills by integrating an image-based face relighting technique inside the 3D reconstruction framework. A compact set of synthetic faces is generated that resemble individuals of interest under the capture conditions relevant to the OD. In a particular implementation based on sparse representation classification, the synthetic faces generated with the DSFS are employed to form a cross-domain dictionary that account for structured sparsity. Experimental results reveal that augmenting the reference gallery set of FR systems using the proposed DSFS approach can provide a higher level of accuracy compared to state-of-the-art approaches, with only a moderate increase in its computational complexity

Facial Data Classification Through Enhanced Local Binary Patterns (LBP) and Dynamic Range Local Binary Patterns (DRLBP) Algorithms

A significant amount of reliance is placed on facial data classification in contemporary computer vision and pattern recognition. This research presents a novel method that makes use of the algorithms of Dynamic Range Local Binary Patterns (DRLBP) and Enhanced Local Binary Patterns for the purpose of face data classification that is both effective and precise (LBP). The classic LBP methodology is expanded upon by the Enhanced LBP method, which incorporates adaptive thresholding techniques and spatial histogram characteristics. This makes it possible to conduct a more thorough investigation of the texture and to be resilient in a variety of lighting conditions. By continuously modifying the local binary pattern range, the DRLBP algorithm improves upon this in order to better accommodate nuanced facial features and expressions. This is done in order to better accommodate facial expressions. In terms of accuracy, speed, and adaptability, our proposed system beats state-of-the-art alternatives, as demonstrated by extensive trials conducted on commonly used facial datasets. According to the findings of our investigation, it would appear that human-computer interaction (HCI), digital forensics, and security systems could all stand to gain a great deal from a solution that combines Enhanced LBP and DRLBP algorithms for the classification of face data