Shape From Focus (SFF) reconstructs a scene’s shape using a series of images with varied focus settings. However, the effectiveness of SFF largely depends on the Focus Measure (FM) used, which is prone to noise-induced inaccuracies in focus val...
The immediately preverbal position has been argued to be the default focus position in Turkish. In absence of any overt focus markers, the constituent in this position is considered to carry sentential stress and neutral information for canonical wor...
Answers to wh-questions are the most widespread method to elicit information focus. When studying the syntax of focus, however, this method is problematic because the most natural answer to a wh-question is often a fragment that only includes the foc...
Focus back effort, concentration effort, and focus back state are factors associated with mind wandering. Focus back effort, proposed in alignment with the definition of focus back state, has been previously regarded as one manifestation of concentra...
Multi-focus image fusion integrates images from multiple focus regions of the same scene in focus to produce a fully focused image. However, the accurate retention of the focused pixels to the fusion result remains a major challenge. This study propo...
This paper discusses the structural realisation of contrastive focus in the Grassfields Bantu language Bamileke Mǝ̀dʉ́mbà, yet another language with grammatically optional focus fronting. We show that the realisation of con...
1 August 2012
Increasingly, academic researchers and practitioners have been using online 3D virtual worlds such as Second Life (SL) to conduct focus groups. When doing so, researchers and practitioners have copied and pasted as is, in this new environment, the qu...
A hole-patterned electrode liquid crystal (LC) lens with electrically switching coaxial bi-focus and single focus modes of tuning is demonstrated. The proposed LC lens mainly consists of a two LC layer (TLCL) structure with different thicknesses to a...
A Shape-From-Focus (SFF) is a three-dimensional imaging method based on focus information. It is not yet widely used for in-line industrial inspection or measurement tasks. The main reasons are the time it takes to capture a 3D image of the inspected...
Depth from focus (DFF) is an optical, passive method that perceives the dense depth map of a real-world scene by exploiting the focus cue through a focal stack, a sequence of images captured at different focal distances. In DFF methods, first, a focu...
Focus is cross-linguistically associated with a number of different strategies, such as fronting, clefting, markers, and prosody. In some cases, the choice between one strategy or another is determined by language-specific rules, while in others, two...
In the shape-from-focus (SFF) method, the quality of the 3D shape generated relies heavily on the focus measure operator (FM) used. Unfortunately, most FMs are sensitive to noise and provide inaccurate depth maps. Among recent FMs, the ring differenc...
Using the Richards–Wolf formalism, we obtain explicit analytical expressions for the optical helicity density at the tight focus of four different light beams: a linearly polarized optical vortex, an optical vortex with right-handed circular po...
This paper is a sequel to the 1998 review paper “Scientific status of the Dense Plasma Focus” with 16 authors belonging to 16 nations, whose initiative led to the establishment of the International Center for Dense Magnetized Plasmas (ICDMP) in the y...
We study the tight focus of generalized (hybrid) Poincaré beams. A conventional Poincaré beam is a coaxial superposition of two optical vortices, one with left circular polarization and a topological charge (TC) of m, while the other ha...
20 May 2022
Sprinting is often seen in a variety of sports. Focusing one’s attention externally before sprinting has been demonstrated to boost sprint performance. The present study aimed to systematically review previous findings on the impact of external...
This paper describes the design of a 3D image acquisition system dedicated to natural complex scenes composed of randomly distributed objects with spatial discontinuities. In agronomic sciences, the 3D acquisition of natural scene is difficult due to...
Recovering three-dimensional (3D) shape of an object from two-dimensional (2D) information is one of the major domains of computer vision applications. Shape from Focus (SFF) is a passive optical technique that reconstructs 3D shape of an object usin...
In this work, we analyze the narrow focus strategies in the written Italian of university students. Although prosodic prominence is a characterizing feature of focus—functionally more important than morphosyntactic marking, according to some au...
Multi-focus image fusion is the process of combining focused regions of two or more images to obtain a single all-in-focus image. It is an important research area because a fused image is of high quality and contains more details than the source imag...
We examine how individuals’ regulatory focus affects their donation behavior and how personal events experienced before the donation moderate this relationship. In this research, regulatory focus refers to the basic motivational orientation that affe...
Multi-focus image fusion is a technique for obtaining an all-in-focus image in which all objects are in focus to extend the limited depth of field (DoF) of an imaging system. Different from traditional RGB-based methods, this paper presents a new mul...
1 August 2012
The increasing prominence of online focus groups in market research and the complexity that the Internet environment adds to the conduct of research with focus groups has led to a certain interest in discovering how this method can be applied effecti...
Recent studies have shown that shì ‘be’… (de) focus sentences in Mandarin Chinese are not structurally uniform. One of the criteria to make distinctions among them is the Adjacency Condition, that is, only the right adjacent...
Liquid lenses are the simplest and cheapest optical lenses, and various studies have been conducted to develop tunable-focus liquid lenses. In this study, a simple and easily implemented method for achieving tunable-focus liquid lenses was proposed a...
This pilot study compared the effects of two attentional focus strategies on fitness parameters and body composition in outpatients with obesity. This was a randomized, controlled study that enrolled 94 obese individuals and allocated them into an in...
Affected by COVID-19, the Chinese government has implemented demand-side reform policies to stimulate consumption. In this context, should consumer goods companies focus on innovation (FOI) or focus on ales (FOS), and what impact does it have on sust...
Multi-focus image fusion is a very essential method of obtaining an all focus image from multiple source images. The fused image eliminates the out of focus regions, and the resultant image contains sharp and focused regions. A novel multiscale image...
Differing from prior studies which explored workplace ostracism’s negative impacts, in this study, we try to explore ways to mitigate and harness workplace ostracism to encourage proactive behavior. By drawing on regulatory focus theory, we pro...
This paper presents an analysis of Dimasa focus intonation. The acoustic analysis shows that narrow focus sentences undergo a jump in the pitch range irrespective of the underlying tonal value of the morpheme it attaches to. In addition to f0 expansi...
This paper explores the prosodic patterns of complex DP structures in Xitsonga by looking at penultimate lengthening in DPs with marked and unmarked word orders of different types. We discuss the underlying syntactic structures and prosodic realizati...
A large body of research suggests that during learning motor skills, focusing on environmental effects of the movement (external focus) generally leads to better performance than focusing on one’s own body (internal focus). The functionality hy...
In this paper, a multi-focus image stack captured by varying positions of the imaging plane is processed to synthesize an all-in-focus (AIF) image and estimate its corresponding depth map. Compared with traditional methods (e.g., pixel- and block-bas...
This paper reports the precision of shape-from-focus (SFF) imaging according to the texture frequencies and window sizes of a focus measure. SFF is one of various depth measurement techniques for optical imaging, such as microscopy and endoscopy. SFF...
The motivation–direction model has served as the primary framework for understanding frontal cortical activity. However, research on the link between approach/avoidance motivation and left/right frontal cortical activity has produced inconsiste...
An automatic focusing system is a crucial component of automated microscopes, adjusting the lens-to-object distance to find the optimal focus by maximizing the focus measure (FM) value. This study develops reliable autofocus methods for hyperspectral...
Standing long jump is known as one of the important skills in the success of athletes in most sports. In addition, one of the most effective factors that can affect standing long jump distance and kinematics is the focus of attention used by the athl...
In previous picture naming tasks, semantically related distractor words (co-hyponyms to the target word) induce interference, which is usually taken as evidence for lexical competition. In an online picture-word-interference experiment, we showed tha...
For many applications of extreme ultraviolet (XUV) and X-ray pulses, a small focus size is crucial to reach the required intensity or spatial resolution. In this article, we present a simple way to characterize an XUV focus with a resolution of 1.85...
3 July 2020
The attentional problems of school children are a crucial topic due to abundant information in this digital era. There are five attention dimensions for children: focused attention, sustained attention, selective attention, alternating attention, and...
This study investigates speaker based variation in the use of word order and intonation to mark narrow and wide focus in Urdu. The identification of focus type and position, as well as the prosodic phrasing of declarative sentences produced in the ta...
People’s choices of (electronic) communication channels are central to the quality of communication—and sometimes detrimental to their actual communication goals. However, while factors influencing media choice are abundant, potential mea...
This paper examines the role of focus groups in mixed-methods research, focusing on trust dynamics within the smart city. It takes the Asian metropolis of Hong Kong as its empirical case. It successfully validates focus groups as a research method ac...
Literature reports superior performance when focusing one’s attention during a movement on environmental effects of that movement (external focus, EF) compared to focusing on the moving body (internal focus, IF). Nevertheless, IF instructions s...
Introduction: Focus group methodology is commonly used to quickly collate, integrated views from a variety of different stakeholders. This paper provides an example of how focus groups can be employed to collate expert opinion informing amendments on...
As microelectronic devices become more prevalent daily, miniaturization is emerging as a key trend, particularly in optical systems. Optical systems with volume scanning and imaging capabilities heavily rely on focus control. The traditional focus tu...
As an important branch in the field of image fusion, the multi-focus image fusion technique can effectively solve the problem of optical lens depth of field, making two or more partially focused images fuse into a fully focused image. In this paper,...
The characteristic analysis of the flux formed by the heliostat in the optical system is the basis in design and optimization of the whole system. In this paper, our research subject is a pilot installation of the point-focus Fresnel system, which is...
Given the variety of focus measure operators, selecting an appropriate one based on scene requirements is critical. This study designs evaluation metrics based on the morphological characteristics of focus measure curves. A multipoint linear fitting...
Video super-resolution reconstruction is the process of reconstructing low-resolution video frames into high-resolution video frames. Most of the current methods use motion estimation and motion compensation to extract temporal series information, bu...
of 1,651