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Among various kinds of image denoising methods, the Perona–Malik model is a representative Partial Differential Equation based (PDE-based) algorithm which effectively removes the noise as well as having edge enhancement simultaneously through anisotropic diffusion controlled by the diffusion coefficient. However, the unstable behavior of the Perona–Malik(More)
Estimating the ego motion is a key problem for a mobile robot, its efficiency and precision are hard to be balanced. In this paper, a fast and accurate approach is proposed to estimate the ego motion of stereo camera. Firstly, two images from left and right cameras are rectified. secondly, a index is introduced to speed up the matching process to find(More)
Based on deducing the gain error's formula of noninverting amplifier, MathCAD was used to analyze the influences of real opamp's nonideal parameters. Result shows: For the modern opamps whose open-loop gain is larger than 120dB, the optimal value of feedback resistance Rf can be settled in a very wide range which is 3–5 orders of magnitude, but Rf(More)
A major goal of vaccines is to induce functional immune memory, and efforts to improve the efficacy of vaccines targeting memory CTLs have revealed an important immunoregulatory role of rapamycin, a specific mTOR inhibitor. While inflammatory cytokines are critical for memory CTLs formation, it is unknown if cytokines such as IL-12 mediate rapamycin's(More)
Depth Cameras are widely used in mobile robotics recently. Combining two frames is the key step to construct a complete 3D map, and the relative pose between two views w.r.t two frames is needed. 3D point pairs are necessary for computing 6DOF pose transformation. In this paper, a method for finding correspondences of two point clouds is proposed, and the(More)
3D point cloud is the original format of three dimensional map for the navigation of mobile robotics. Time of Flight camera can directly return 3D points and grayscale image simultaneously, but the color information is lost. In this paper, 3D points are colored by calibrating PMD camera with RGB camera, and then the RGB image is generated with respect to a(More)
For a long time, how to utilize water resources rationally has influenced Minqin economic, ecological and social benefits. Through analyzing Minqin Value of Output Related to Water Resources from 1956 to 2009, this paper determines the appropriate Auto Regressive Integrated Moving Average model (ARIMA), forecases Minqin Value of Output Related to Water(More)
Reports a method of design low-pass filter. Based on analyzing the error isogram of the Voltage-controlled Voltage Source(VCVS) 2nd-order Low-pass filter's parametric equation by MathCAD, the paper put forward that VCVS unit gain Butterworth f0 Hz Low-pass filter optimal design plan: firstly, select two capacitances C1 and C2, making C2/C1 0.5; and then(More)