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Population is always regarded as one of the most important driving forces of LUCC. Based on the needs of research on driving force of LUCC, impact factors of population distribution, land use system and registered permanent residence system of China, environmental limitation law of the minimum and theories of agricultural location, according to the idea of modeling separately by town and country,...
In this paper, we propose a region-based MRF model with optimized initial regions (RMRF-OIR) for image segmentation. In the RMRF-OIR, a modified mean shift is introduced to get the optimized initial over segmented regions. Then, a region-based MRF is used to model these initial regions on the region adjacency graph. Finally, the segmentation results will be obtained by using a region merging scheme...
This paper using C correction models and methods of study area of ETM images in 2003 ArcInfo software, under the support of map algebra language by using three groups of different resolution levels of the same area of DEM remote sensing images terrain correction. The results show that equals image resolution of remote sensing image for terrain correction when the best effect. This study will for us...
Location-based services are widely used in the Internet services. The method of location cloaking is used to effectively protect the user's location privacy. The current cloaking algorithm does not take into account the regional characteristics, such as population density, popularity level and so on, based on which an attacker can often infer user's exact location from their cloaking area. In this...
Subtractive crosstalk cancelation is an effective way to reduce the appearance of ghosting in 3D displays. However, effective cancelation requires the black level of the input images to be raised above zero, which reduces the image contrast and visual quality. Previous methods for selecting the raised black level do not consider the image content; they are either based on the worst case or they do...
A kind of overlapping effect called bowtie effect occurs around the edge of the scanning swath for optical-mechanical scanner as long as sensors which have swaths wider than one pixel, which aggravates its degree exponentially toward the swath edge. In order to remove bowtie effect, three main factors (satellite motion, earth rotation, scanner mirror) that affect the scanning image are analyzed firstly...
This paper aims to find out how ICT product upgrades influence customer satisfaction. It introduces a common method by which the Quarter Model is used to divide ICT product attributes into four sectors that will be treated differently, and then multiple linear regression model is utilized to analyze how much those attribute changes influence customer satisfaction. An empirical study on cell phone...
While the depth maps of 3D video are represented as luminance images, they are used to aid rendering of novel views and are not viewed by an end user. Therefore, metrics that measure the quality of images that are for end user viewing does not necessarily reflect the quality of depth maps in terms of its ability to render views. This paper investigates the relationship between the quality of the rendered...
This paper presents a new block-based focusing technique for all in-focus light field rendering (LFR). In the proposed method, at first, synthesized images with different depths for a desired view point are obtained by the conventional light field rendering (LFR) method. The synthesized images contain both low and high frequency component artifacts in out-of-focused regions. After that, the proposed...
Particle filter has the advantage of processing nonlinear and non-Gaussian problems in complex motion estimation. This paper describes a new image recovery algorithm based on PSO (particle swarm optimization) Particle Filter. The PSO is introduced into particle filter to improve convergence speed and the capacity of particles moving to high likelihood area, thus high estimation accuracy of particles...
Single sensor digital cameras capture one color value for every pixel location. The remaining two color channel values need to be estimated to obtain a complete color image. This process is called demosaicing or Color Filter Array (CFA) interpolation. We propose a directional approach to the CFA interpolation problem that makes use of multiscale color gradients. The relationship between color gradients...
This paper firstly obtain coordinate geometry which can describe the internal structure of asphalt mixture using digital image processing technology, and then reconstruct model to simulate uniaxial compression test as well as analyze micromechanical properties after processing coordinate obtained using discrete element software. Constitutive laws within model are simplified as the interactions at...
Global motion estimation is an important task for various video processing techniques. The estimation itself has to be robust in presence of arbitrarily moving foreground objects. For that task, two different kinds of estimation methods exist. On the one hand, pixel-based approaches deliver more precise results and work more robust on video sequences with foreground objects. On the other hand, when...
Stochastic image modeling based on conventional Markov random fields is extensively discussed in the literature. A new stochastic image model based on Markov random fields is introduced in this paper which overcomes the shortcomings of the conventional models easing the computation of the joint density function of images. As an application, this model is used to generate texture patterns. The lower...
Discriminative tracking has become popular tracking methods due to their descriptive power for foreground/background separation. Among these methods, online random forest is recently proposed and received a large amount of research attention due to its advantages such as efficiency and robustness to noise, etc. However, the fact that only one kind of features is used limits the discriminative performance...
In this paper we present the detailed calculations which a geolocation database would need to perform in order to derive location-specific maximum permitted emission levels for white space devices (WSDs) operating in digital terrestrial TV (DTT) bands. We introduce a novel methodology for the calculation of such emission levels, whereby the extent of protection afforded to the DTT service is specified...
Unmanned Arial Vehicles (UAVs) require the development of some on-board safety equipments before inheriting the sky. An on-board collision avoidance system is being built by our team. Due to the strict size, weight, power, and costs constraints, visual intruder airplane detection is the only option. This paper introduces our visual airplane detector algorithm, which is designed to be operational in...
An autonomous, efficient and effective object tracking algorithm was required to autonomously identify and track incoming targets. Then controlling a pan-tilt mounted with the sensing camera to accommodate the target within the camera's field of view and controlling a weapon mounted on the second mechanical pan tilt to lock the target and follow it efficiently and accurately. A hybrid algorithm is...
This paper proposes a novel application of image inpainting techniques for the edge enhancement problems in image deblurring and denoising. The edge enhancement effect is achieved by the jumps of pixel values at edge locations resulted from an inpainting process. The process is formulated by the eikonal partial differential equation (PDE) to rule the inpainting priority of pixels in automatically...
We present a novel method to model and estimate elastic geometric deformations of an observed object, whether they are caused by the object's own dynamic behavior, or by the dynamic behavior of the imaging device, or both. A procedure for estimating the space of possible deformations the object may undergo based only on a set of observations is derived. This information is then employed to derive...
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