Advanced Materials Research Vol. 709

Abstract: This paper formulates the problem of recovering depth information of the scene from two defocused images as the minimization of the information divergence between the two measured defocused images based on geometric optics regularization. This geometric optics regularization term is attained according to different relative position of image plane and image focus. The experimental results show that the quality of the estimated depth is significantly better than that obtained without the geometric optics regularization.

Abstract: An image classification method based on sparse representation with basis design is proposed. We construct a classification model under the sparse representation theory. The sparse model can lead to be better performance under a suitable dictionary, so the basis design method can follow the same process as discussed in[6].The experiments show that the proposed method improves the result.

Abstract: Based on the mass action law, the kinetics equation of the complex consecutive reaction was established in the form of first-order ordinary differential equations. Therefore; a program was designed by the Visual Basic language and the theory of the numerical calculation to solve the ordinary differential equations. In the end, the reaction process of the complex consecutive reaction was simulated by the powerful plot function of the Visual Basic language.

Abstract: In this paper,we investigate the Dirichlet problem for a localized nonlinear equation with a weighted localized source term.Under certain conditions, the solutions have a global blow-up and the rate of blow-up is uniform in all compact subsets of the domain.Moreover,we obtain the blow-up rate on maximal value point under some appropriate hypotheses.

Abstract: The disparity map of dynamic programming method is poor. To overcome it, a stereo matching method based on multi-scale plane set is proposed in this paper. This method converts the structural model into the plane set. Define the key plane. Then the key planes are in a high-scale. The other planes are in the low scale. Stereo matching the multi-scale plane set using dynamic programming method. The experimental results show that: this method can solve the dynamic programming algorithm`s problem that disparity map has low matching accuracy and a lot of stripes error.

Abstract: Images captured in fog suffer from low contrast, restoration of fog- degraded images are needed. In this paper, a novel algorithm of image restoration based on wavelet semi-soft threshold is presented. The results show detail restoration and de-noising are improved effectively comparing with Histogram equalization and homomorphic filtering method. It can be concluded that the new algorithm enhanced the contrast of fog-degraded image well.

Abstract: The thesis mainly estimates the change point of time series model through Bayesian method. First, through establishing the time series model, adopting conjugate prior distribution, linear regression and prior information, the parameter values related to distribution can be got. Then posterior distribution and change point can be got through computation. To reduce iterative error, Peak Algorithm is used to check the posterior distribution. Finally, the gold indexs change point of time sequence model can be got through this method.

Abstract: Memory allocation and management of real-time task and sub real-time task have been becoming the hot problem that people concern all the time. Page coloring technology is a kind of practical method which can realize isolation of cache space. This article aimed at the problem of cache resource competition caused by shared memory on multi-core real-time system, to solve the collision of cache visit, put forward the scheme of cache space isolation based on page coloring technology and the realization method. The problem that data collide with the visit on cache can be finally avoided, by dividing the shared cache space.

Abstract: Change detection is widely used in various fields of the image processing, such as remote sensing image analysis for land resources. Change detection is to find out the differences between the images to get the information of the object changes by analysis the images of the different periods. In this paper, the wavelet method was conducted on the images of the polyester material before melting and melting and calculated the differences of wavelet coefficients. Then performed the wavelet inverse transform to get the wavelet difference image and conducted adaptive threshold segmentation. Finally the rate curve of melting process of polyester material was calculated by image change quantized value, which was concluded by the wavelet difference image binarization.

Abstract: DSSAT (Decision Support System for Agrotechnology Transfer) -CERES-Maize was employed to characterize maize yield and nitrogen dynamics in a 50-year maize production study at Woodslee, Ontario, Canada. The treatments selected for evaluation included continuous maize/corn with fertilization (CC-F) and continuous maize/corn without fertilization (CC-NF) treatments. The results showed that the DSSAT model could simulate yield of CC-F more precisely than that of CC-NF. The simulated cumulative nitrate loss from CC-F treatment from 1998 to 2000 was consistent with the actual measured value. For CC-NF, The DSSAT model overestimated the cumulative nitrate loss.