To have a robust and informative image content representation for image categorization, we often need to extract as many as possible visual features at various locations, scales a...
Abstract. The scale invariant property of an ensemble of natural images is examined which motivates a new early visual representation termed the higher order pyramid. The represent...
—A method for locating mathematical expressions in document images without the use of optical character recognition is presented. An index of document regions is produced from re...
In low-resolution images, people at large distance appear very small and we may be interested in detecting the subject’s face for recognition or analysis. However, recent face de...
PCA-SIFT is an extension to SIFT which aims to reduce SIFT’s high dimensionality (128 dimensions) by applying PCA to the gradient image patches. However PCA is not a discriminati...