In this paper, we propose a novel method for facial feature extraction using the directional multiresolution decomposition offered by the complex wavelet transform. The dual-tree implementation of complex wavelet transform offered by Selesnick is used (DT-DWT(S)) [I.W., Selesnick, R.G. Baraniuk, N.C. Kingsbury, The dual-tree complex wavelet transform, IEEE Signal Processing Magazine, 6, s.l., I...

Since the last decade, image retrieval has been used in several application domains such as GIS, medicine, etc. Queries are formulated using different types of features such low-level features of images (histograms, color distribution, etc.), spatial and temporal relations between salient objects, semantic features, etc. In this paper, we propose a novel method for identifying and indexing seve...

Directional properties of the sound transformation at the ear of four intact echolocating bats, Eptesicus fuscus, were investigated via measurements of the head-related transfer function (HRTF). Contributions of external ear structures to directional features of the transfer functions were examined by remeasuring the HRTF in the absence of the pinna and tragus. The investigation mainly focused ...

This paper proposes a global approach to the recognition of handwritten Amazigh characters. The method used is based on continuous Hidden Markov Models and directional features. The input provided to our system is a vector of features extracted directly from an image of Amazigh characters using sliding windows technique based on hough transform. The obtained vector is translated into a sequence...

In this paper, We presents a Chinese medical term recognition system submitted to the competition held by China Conference on Knowledge Graph and Semantic Computing. I compare the performance of Linear Chain Conditional Random Field (CRF) with that of Bi-Directional Long Short Term Memory (LSTM) with Convolutional Neural Network (CNN) and CRF layers performance and find that CRF with augmented ...

Our attention baseline model is similar to the Bahdanau et al. (2015) architecture, where we encode input frame level video features to a bi-directional LSTM-RNN and then generate the caption using a single layer LSTM-RNN, with an attention mechanism. Let {f1, f2, ..., fn} be the frame-level features of a video clip and {w1, w2, ..., wm} be the sequence of words forming a caption. The distribut...

In recent years, we proposed a number of new and very effective features for automatic writer identification and verification. They are probability distribution functions (PDFs) extracted from the handwriting images and characterize writer individuality independently of the textual content of the written samples. In this paper, we perform an extensive analysis of feature combinations. In our fu...

The fracture deformations often result in linear morphological elements (lineaments, valleys) on the surface. In many cases, direction of lineaments and valleys can be well followed by strike geological structural elements. Therefore, conclusions drawn from these directions for regional tectonic processes. Our work aimed to analyse relationship between valley lineament network south-eastern par...

High-operating-temperature direct ink writing (HOT-DIW) of mesoscale architectures that are composed of eutectic silver chloride-potassium chloride. The molten ink undergoes directional solidification upon printing on a cold substrate. The lamellar spacing of the printed features can be varied between approximately 100 nm and 2 µm, enabling the manipulation of light in the visible and infrared ...