针对CCD成像时中间亮两边暗的畸变特点，用双线性插值的方法对图像进行灰度校正。
According to the imaging character of CCD, a new method to calibrate the distortion image is brought forward.
进而计算了圆孔中的声质点速度，并分析了孔中速度的畸变情况、最后给出了圆孔的非线性声阻和声抗的理论值。
Furthermore, the time history and spectrum of the average flow velocity through an orifice are computed, from which the nonlinear distortion of flow velocity is analyzed.
此值控制着畸变的量。负数值校正镜头圆桶状面性畸变，而整数值校正镜头针尖状点性畸变。
This value controls the amount of distortion. Negative values correct lens barrel distortion, while positive values correct lens pincushion distortion.
对于金属导体引起的电场不规则畸变，采用有限元的方法计算场强以验证是否超出临界值。
And finite element method was adopted to calculate the electric field strength to find whether it is beyond the critical.
为此，论文提出了一种基于网格图像的几何校正算法，该算法运用分段插值的思想，利用分块低次插值去逼近几何畸变，达到高次插值的效果。
Therefore the authors put forward a calibration algorithm based on the grid image, which USES subdivision interpolation to approach the deformation and get a result of high-order interpolation.
分别以动态聚焦模块校正聚焦误差，以网格插值算法软件校正“枕形”畸变。
The focussing error is corrected by means of dynamic focussing module and the "pillow shaped" distortion is corrected with the software of the grid interpolating algorithm.
通过计算，选择符合电压谐波畸变标准的交流滤波器，并进行各元件的稳态额定值的计算。
Through the calculation, the filters have been selected corresponding with voltage harmonic distortion standard. And the steady state rating of the parameters are calculated.
为了获得电容最佳值，提出了一种简单的最优化方法；并采用寄生电阻预畸变与SC负电阻相结合的办法，设计的SC滤波器对寄生电容不灵敏，且电路简单。
The SC filter is insensitive to parasitic capacitance implemented by a simple circuit in the way of combining advance mutation of parasitic resistance and SC negative resistance.
装置可以计算波形任意部分的多达50次的暂态谐波，给出谐波总畸变率及各次谐波的含有率和谐波值。
The device can calculate transient harmonics (up to 50 orders) of any part of data wave, give the total harmonic distortion, each harmonic ratio and each harmonic value.
装置可以计算波形任意部分的多达50次的暂态谐波，给出谐波总畸变率及各次谐波的含有率和谐波值。
The device can calculate transient harmonics (up to 50 orders) of any part of data wave, give the total harmonic distortion, each harmonic ratio and each harmonic value.
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