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In this work we report on the development and optimization of a compact, single-handle, and multi-spot size laser system for medical hair removal, with the ability to change the output spot size from rectangular 24×32 mm2 to elliptical 7×11 mm2 while introducing minimal device size and energy loss. The design employs two sets of optical components to guide the laser beam and shape it to give users...
The method for extraction of face distributed features from pixel intensity columns and rows is considered. The features were applied to original and segmented faces. The greatest difference for faces was observed for segmented images. The proposed statistical features were tested for a face searching.
This study demonstrates a process using vehicle trajectory data to generate detector volume, speed and time occupancy data, along with the generalized flow rate, density and space mean speed data. The relationships among detector volume, speed and time occupancy along signalized arterials are analyzed theoretically and experientially. If the generalized definitions are followed, the fundamental relationship...
Airborne and terrestrial laser scanning techniques have been largely used for the reconstruction of high-resolution 3-D topography in the field of geosciences. In recent years, laser scanning has been also exploited on rock properties, biomass classification and carbon storage estimation. However, when laser spot collides partially against the target or even against undesirable background objects,...
Time constants and luminescence lifetimes of an InGaN-based white LED at different wavelengths are characterized by a novel multi-cycle charge modulation based CMOS image sensor chip. To enable high sensitivity, we propose parasitic insensitive multi-cycle charge modulation scheme for low-light lifetime extraction. The designed in-pixel CTIA-based structure is able to capture the weak luminescence-induced...
Odor and taste compounds are suggested here as standard analytes for e-nose and e-tongue instruments to provide performance criteria regarding the capacity of these electronic sensing devices to mimic human chemosensory responses. Representative odor and taste standards for sensitivity, suprathreshold intensity, and quality are proposed. Ultimately, a formal set of analytical standards should be established...
This paper proposes a novel CMOS sensor chip that can realize both fast and accurate intensity and lifetime sensing for fluorescence. To enable high sensitivity, we propose parasitic insensitive multi-cycle charge modulation scheme for low-light lifetime extraction benefiting from simplicity, accuracy and compatibility with CMOS process. The designed in-pixel CTIA-based structure is able to capture...
In the digital world, the size of images is an important challenge when dealing with the storage and transmission requirements. Compression is one of the fundamental techniques to address this problem. A number of transform based compression techniques are discussed in the literature and some are used in practice. In this paper, we propose an edge-based image transformation method which will be used...
In this article we present the variation of the speech signal of the database TIMIT and NTIMIT with its morphological characteristics of the speakers as well as the extrinsic variability related to the conditions of transmission and acquisition of the signal. For this study we measured the timbre and the intensity in order to choose the best indices that give us a good effect for the identification...
Object tracking in real time is one of the most important topics in the field of computer Vision. The work undertaken in this dissertation is mainly focused on development of a reliable and robust real time tracking system that can track the object of interest in the video acquired from a stationary or moving camera. The proposed algorithm is a real time algorithm that operates in 25 frames per second...
Speech Emotion Recognition is one of the significant research topics in the field of Human Computer Interaction (HCI). Here in this paper, three emotional states have been recognized i.e. neutral, angry and sad. The explored feature vectors include: Linear Prediction Cepstral coefficient (LPCC), Mel-frequency Cepstral Coefficient (MFCC), pitch, intensity and formant. To train the Support Vector Machine...
This paper proposes an innovative similarity-intensity joint speckle filtering algorithm for the polarimetric synthetic aperture radar (PolSAR). By inducing a newly defined similarity-intensity (SI) parameter, the homogeneous pixels with respect to the central pixel can be selected within a neighboring region based on both the scattering mechanism and the intensity information. The minimum mean-square...
Histogram equalization (HE) is one of the simplest and effective methods for contrast enhancement. The contrast of an image is increased by HE. But HE fails to produce satisfactory results for wide range of low contrast images, because HE does not use a spatial feature that is included in an original image. In order to overcome this disorder the differential gray-levels histogram equalization (DHE)...
Preserving hue is an important issue for color image processing. In order to preserve hue, color image processing is often carried out in HSI or HSV color space which is translated from RGB color space. Transforming from RGB color space to another and processing in these spaces usually generate gamut problem. We propose image enhancement algorithms which conserve hue and preserve the range (gamut)...
The paper considers fusion of data streams of different nature which are describing properties of the same layered medium. It has been shown that combining these streams gives the fused stream with high intensity at the bound between layers. The simulation has shown that histogram of the fused stream have noticeable threshold between low and high intensity. The simulation has also approved that the...
Image enhancement processes consist of a collection of techniques that inquire about to improve the visual appearance of degraded image. This paper introduces a multimodal enhancement technique for dense foggy images. The present available techniques don't work in low visibility like dense fog. The proposed methods changes the intensity component among the converted HIS components from the RGB components...
Phase-OTDR based on space difference of Rayleigh backscattering is proposed. The Rayleigh backscattering from different segments of the test fiber interfere by adjusting the path difference of the imbalance Michelson interferometer. According to the resemble polarization and intensity of two path light, amplitude, frequency of the acoustic signal at the different locations along the sensing fiber...
A method for face parametrical statistical features extraction from intensity fragments and segments is considered. Pixel coordinates means are calculated. An algorithm for face classification is proposed. Illustration of features and classification process for given features are presented.
The study investigates the effects of street light colors on driver alertness in aim to improve the traffic safety element. In order to achieve this objective, the human P100 visual evoked potentials (VEPs) responses are stimulated to different colors (red, green, blue, and yellow) with to levels of intensity, and twenty (20) healthy subjects with normal or corrected to normal vision are involved...
We perceive tactile sensations on the basis of vibration elicited on our skin. The skin vibration involves fingertip's skin properties of each person. Therefore, measurement of the skin vibration might be useful for quantitative evaluation of subjective tactile sensations. In this paper, we conducted the experiment for various roughness and textures with a wearable skin vibration sensor to investigate...
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