Mr. Apurba Das Profile

Apurba Das

at Tata Consultancy Services Ltd

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Proceedings Article | 6 July 2015 Paper

Enhancing the performance of cooperative face detector by NFGS

Snehal Yesugade, Palak Dave, Srinkhala Srivastava, Apurba Das

Proceedings Volume 9631, 96311F (2015) https://doi.org/10.1117/12.2195302

KEYWORDS: Facial recognition systems, Sensors, Detection and tracking algorithms, Video, Video surveillance, Binary data, Mouth, Motion detection, Visualization, Pattern recognition

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Computerized human face detection is an important task of deformable pattern recognition in today's world. Especially in cooperative authentication scenarios like ATM fraud detection, attendance recording, video tracking and video surveillance, the accuracy of the face detection engine in terms of accuracy, memory utilization and speed have been active areas of research for the last decade. The Haar based face detection or SIFT and EBGM based face recognition systems are fairly reliable in this regard. But, there the features are extracted in terms of gray textures. When the input is a high resolution online video with a fairly large viewing area, Haar needs to search for face everywhere (say 352×250 pixels) and every time (e.g., 30 FPS capture all the time). In the current paper we have proposed to address both the aforementioned scenarios by a neuro-visually inspired method of figure-ground segregation (NFGS) [5] to result in a two-dimensional binary array from gray face image. The NFGS would identify the reference video frame in a low sampling rate and updates the same with significant change of environment like illumination. The proposed algorithm would trigger the face detector only when appearance of a new entity is encountered into the viewing area. To address the detection accuracy, classical face detector would be enabled only in a narrowed down region of interest (RoI) as fed by the NFGS. The act of updating the RoI would be done in each frame online with respect to the moving entity which in turn would improve both FR (False Rejection) and FA (False Acceptance) of the face detection system.

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