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Considering that the matrix of multi-joint arm calibration model with distance constraints, in which there were different orders of column magnitude, may cause ill-posed problem and the error in the process of calibration may affect the accuracy of the result, a method was proposed to modify the calibration matrix. Dimensionlessness and threshold denoising algorithms were used in the calibration matrix's...
In 3D video coding, texture images and depth maps need to be coded jointly. Since the performance of 3D video coding should be mainly evaluated by the synthesized virtual view, the object of optimal bit allocation problem is to minimize the distortion of the virtual view. In this paper, distortion model of virtual views is derived, and a near optimal bit allocation algorithm is proposed based on the...
Depth information acquisition is one of the key technologies of FTV (Free View Television) system. To obtain accurate depth information, an improved depth estimation method is proposed. For each pixel in the reference view and current view, gradients between current pixel and its eight neighboring pixels as well as the average value of the nine pixels' luminance are computed. To increase depth accuracy...
In order to change the position control into physical motion control, and give up interpolation calculation, a physical motion model of CNC machine tool has been built. The relation between geometric parameters, motion parameters and planning parameters is studied with kinematics principle and geometric principle. The motion differential equations are worked out, It can be used to calculate transient...
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