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We focus on feature extraction and selection to best represent texture and shape properties of plant diseases in an image-based leaf monitoring system implemented in a mobile-cloud environment. A number of textural and region-based features are aggregated from previous studies; also we introduce mean and peak indices of histogram-of-shape as disease property representations along with the proposed...
We propose a novel multi-scale shape descriptor for shape matching and object recognition. The descriptor includes three types of invariants in multiple scales to capture discriminative local and semi-global shape features and the dynamic programming algorithm is employed for shape matching. The experimental results verify that our proposed shape feature is invariant to translation, rotation, scaling,...
In this paper, we propose a collection of pattern sets to compute bit-quad matchings in component tree structures of grayscale images. The proposed patterns are designed to be used in an efficient algorithm which runs in linear time by counting incrementally each pattern matching per pixel. It is worth emphasizing that the proposed algorithm computes any attribute derived from 2×2 bit-quads such as...
The purpose of this study is to determine a representative pattern of a set of three dimensional (3D) knee kinematic measurement curves recorded throughout several trials with a patient walking on a treadmill. The measurements are knee angles, (namely joint angles) with respect to the sagittal, frontal, and transverse planes, as a function of time during a gait cycle. Two serious difficulties met...
In this paper and its companion paper [1], multi-agent formation control with obstacle collision avoidance for angle-distance-based formations with orientation control is considered. We propose an approach that uses information about the angle and distance between agents to achieve a leader-follower formation. First, we provide cascaded control laws with collision avoidance for groups of agents with...
In this paper and its companion paper [1], a stable leader-following formation control for multi-agent systems with obstacle collision avoidance with orientation control is considered. We propose a cascaded distributed control law that uses information about the angle and distance between agents to achieve a cycle-free persistent formation. First, we provide a control scheme with collision avoidance...
Farmland fragmentation is a land use pattern contrary to land formula management. It would lead to farmland's shrinking and decentralization, and reduce the output efficiency. Carrying out spatial evaluation of farmland fragmentation is the premise and foundation of improving the land use efficiency. The paper selected Chaohu Basin as the research object, regarded 3km size grid as research unit, constructed...
Craniofacial superimposition is a forensic identification method involving the overlay of a skull over the available ante-mortem photographs of a candidate missing person face and the subsequent analysis of their anatomical correspondence. Within this process, the decision making stage focuses on determining the degree of support of being the same person or not based on the analysis of some criteria...
The very high resolution (VHR) images can be seen as multiview data. For better organizing and highlighting similarities and differences between the multiple views of data, a semisupervised multiview feature selection (SemiMFS) method is proposed in this paper, based on consensus and complementary principles. In SemiMFS, feature views are generated by decomposing features into multiple disjoint and...
Mapping regional spatial patterns of coral reef geomorphology provides the primary information to understand the constructive processes in the reef ecosystem. The technique of remote sensing plays an increasingly important role in the protection and management of coral reef ecosystems. In this paper, an object-based image analysis (OBIA) method was presented to map intra-reef geomorphology of coral...
Flood information extraction, includes flooded area and inundated duration, using remote sensing data plays a fundamental role on evaluating loss and conducting disaster rescue and relief. However, the clear-sky image is restricted by different weather conditions such as cloud, rain, fog and so on. Consequently, lack of the critical period remote sensing data of flood routing cannot produce inundated...
Feature selection is often required to select a feature subset from the original feature set of objects of very high resolution (VHR) remote sensing images. However, the majority of feature selection methods is supervised, and could fail to identify the relevant features when labeled objects are scarce. To address the problem, this paper proposes a method, efficient semi-supervised feature selection...
Bidirectional Reflectance Distribution Function (BRDF) describes the anisotropic distribution of surface reflectance. Bidirectional Reflectance Factor (BRF) is an alternative parameter to BRDF and is measurable while BRDF is only a theoretical concept. Land surface albedo plays a crucial role in climate and biosphere modeling. Paddy rice is a special crop type which grows in the water flooded environment...
In this paper, a validity index method VDOGK, a variation of the index method VDO, for estimating the optimal number of clusters in datasets with concave-/elongated-shaped clusters is presented. The new index uses Gustafson-Kessel FCM to partition the dataset so that geometric-shape-sensitivity problem of FCM can be reduced. It is based on both dispersion and overlap measures, where the dispersion...
Projective distortion remains an open problem for image stitching. This paper proposed a novel weight-based shape-optimizing warping framework, which combines a projective transformation and a similarity transformation so as to reduce the projective distortion. This method aligned images with the projective transformation, and optimized images' shape under the constraint condition of similarity transformation...
The health status of a railway tunnel should be regularly inspected during its service period for safe operation. The frequency of periodic inspection should be increased when the tunnel has become aged. For the coverage tunnels, health assessment is more essential. Ground penetrating radar (GPR) has been used as a key tunnel health detecting technique; however, so far, such (GPR) techniques are in...
Electricity grids around the world are undergoing a fundamental transformation, thanks to the modernization of electricity distribution systems including smart meter deployment and applications. Data generated by smart meters provides a wealth of information that can help better understand and optimize the operation of electricity networks. This paper proposes a novel Hybrid Load Profile Clustering...
Recognition of shapes in the three dimensions is a challenging task when point clouds are at the input. Recognition from partial pieces is another challenging task in general. Recognizing objects from partial 3D data is a strong need in industrial automation, autonomous driving, cooperative robot systems including machine-machine and machine-human interactions and in surveillance. This papers investigates...
In this short paper we briefly revise the criteria defining near and far field. After an extension of the radian sphere notion to finite size sources, we generalize the amplitude and phase criteria for arbitrary source structures. Next we identify with a representative example the wavelength distance where the near field has reached the shape of the far field directivity, then we quantify the difference...
A Minkowski fractal shape patch antenna covering terrestrial wireless services is presented for multiple-input-multiple-output implementation. The proposed structure is minimized upto two iteration operated at 10GHz. The end to end separation between the two antennas is 4.9mm The existence of surface waves is reduced using two inverted T and slot structure respectively, which is etched in between...
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