Title :
Face detection in a compressed domain
Author :
Manfredi, Guido ; Ziou, Djemel ; Auclair-Fortier, Marie-Flavie
Author_Institution :
Centre MOIVRE, Univ. de Sherbrooke, Sherbrooke, QC, Canada
Abstract :
We focus on the Viola-Jones face detector in the Discrete Cosine Transform (DCT). In order to avoid typical pitfalls due to features in the DCT domain we propose to merge the integral image stage with the decompression process, thus saving time for both operations. The proposed method saves 128 additions and 224 multiplications on an 8×8 block for a simple integral image. We propose a similar method for fast feature contrast adjustment by computing the squared integral image using DCT and simple integral image coefficients. These methods are faster and more transmission error resilient than classical methods.
Keywords :
discrete cosine transforms; face recognition; DCT domain; Viola-Jones face detector; compressed domain; discrete cosine transform; squared integral image; Complexity theory; Detectors; Discrete cosine transforms; Face; Feature extraction; Image coding; DCT; Viola-Jones; compressed domain; face detection; integral image;
Conference_Titel :
Digital Signal Processing (DSP), 2011 17th International Conference on
Conference_Location :
Corfu
Print_ISBN :
978-1-4577-0273-0
DOI :
10.1109/ICDSP.2011.6004888