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This paper presents a non-photorealistic rendering algorithm for Pointillism style. At first, ellipse dots are adopted as rendering elements and their locations are randomly distributed on a target image. Then dots orientations are pre-calculated with guidance of a direction map. A saliency map of the source image decides long and short radius of the ellipse dot. At last, the dots render the canvas...
In wheeled mobile robot servo system, active disturbance rejection control (ADRC) technology is introduced and such controller is designed. It aims at solving the problems including complex external disturbances, changeful model parameters, contradiction between rapidity and overshoot as well as conventional control strategies depending heavily on high precise object model. For parameter tuning, the...
A kind of attitude control method for the quadrotor unmanned helicopter based on improved active disturbance rejection control (ADRC) is proposed in this paper. The dynamic model of the quadrotor unmanned helicopter is built, and the virtual control is introduced, then the non-linear model is decomposed into height, yaw, roll and pitch of the four independent channels and the disturbance rejection...
The application of hyperspectral remote sensing has been a research focus in recent years, and one of its fundamental goals is to detect and classify the constituent materials for each pixel in the scene, which is pixel unmixing. This research proposes spectral reconstruction, which is the inverse process of pixel unmixing. It can be used to analyze the essence of the hyperspectral imaging procedure...
The design target of Finite Impulse Response (FIR) filter is to approximate the ideal filters on the request of a given designing filter specifications. Genetic algorithm is one of global optimal search algorithm of mimic biological evolution, but it has the precocious and slow convergence problems if it is directly applicated. Based on these problems, the adaptive selection algorithm was used to...
Based on the analysis of income risk of oversea hydropower investment, the paper proposes the idea that hydropower enterprises can develop income insurance by distinguishing the features of income risk and other risks, and try to transfer the investment income risk in the context of insurance. On the basis of analyzing the strategies of the demand and supply, we deduce the critical conditions that...
For the load affected by many factors and near the far smaller feature, a hybrid load forecasting method based on fuzzy support vector machine and linear extrapolation is proposed. The similar day is selected by the integrated effects of meteorology and time, and the fuzzy membership of the corresponding training sample is obtained by normalized similarity. Using the fuzzy support vector machine to...
In this paper, a cooperative particle swarm optimization algorithm using the immune clonal selection(ICS) is proposed, named CPSO-ICS. The proposed algorithm coupled with a memory scheme and multiple population. The best individual of each normal subpopulation will be selected into the memory, during the search process. The improved immune clonal selection operator is employed for optimizing the memory...
Aiming at the current situation of long delivery cycle time, blind disorder distribution in the supply chain distribution patterns of the single species regional Fast Moving Consumer Goods(FMCG), and a secondary distribution model is constructed through analyze the logistics, information flow and other constraints of the distribution pattern. In this model, the distribution center location is based...
Many researchers have used prospect theory to analyze the taxpayer compliance issues and their results have confirmed that the prospect theory can explain the bounded rationality decision-making of taxpayer. However, previous research is based on the comprehensive income tax system and the Chinese income tax system is still a simple categories income tax system, which is completely different from...
With the development of the modern society, Finance and Technology have become the important factor to the social productivity, They have influenced each other: on the one hand, the development of science and technology relies on the back of finance because of the characters of high risk of High-Technology Industry; on the other hand, the improvement of finance service itself is based on the technology...
Case clustering is the core of case-based reasoning system. This paper partitions clustering to case base and designs a case retrieval strategy based on heterogeneous case base. Then, the paper analyzes the partitional principles of case base and the clustering rules of cases, and focuses on the case retrieval strategy based on partitional clustering. The experimental results show that this method...
Currently there are many problems in the engineering education in China, mostly due to that the collaborations between universities and enterprises are so insufficient that the students are always lack of necessary engineering practice. Consequently, reformation of engineering education is needed in order to address this issue, in the background of which the project discussed in this paper is carried...
In this paper, computer simulation is used to study the dynamic complexities of a host-parasitoid interaction with a Hassell growth function for the host and Holling-type functional response. Many forms of complex dynamic are observed, including quasiperiodic bands with periodic windows, Hopf bifurcation, period-doubling bifurcations, period-halving bifurcations, attractor crisis, intermittent chaos,...
Based on stationary wavelet packet transform and Hilbert transform, the paper proposes a fault detection algorithm, which adaptively extracts the fault characteristic component of the signal. Firstly, the algorithm uses one-level stationary wavelet packet transform to decompose the signal into low- and high-frequency sub-bands. Subsequently, Hilbert transform is used to obtain the instantaneous frequency...
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