参数变换

A novel no touch measuring method for traditional products was put forward and a precise model of Direct Linear Transform was presented for the aberration in the images occurred at every turn. Rectangle mark tag and location parameter are no longer needed in this algorithms. A method of tolerance reckon by curve equation was also provided. In order to raise the operation speed Hough circle detection method was improved. In the meantime circle detection method to images with more than one circle was applied, so that the concentricity calculation is possible.

论文的创新点是，提出了传统机械产品的非接触式测量方法，特别针对图像采集环节最容易出现的畸变现象，提出了一种严密的直接线性变换模型，该算法既不需要在影像上有框标，也不需要有摄影机内外方位参数的起始近似值，具有显著优点；提出了利用曲线的方程来确定公差的方法，对传统的Hough圆检测方法进行了改进，提高了检测速度，同时将圆检测用于存在多圆的图像，使多圆的同心度检测成为可能。

In order to obtain spectrum intensity distribution inside a circular luminant without damage,a measuring method depending on Abel transform was developed.

为了在无损状态下获得圆截面发光体内部谱线强度空间相对分布，提出了利用Abel变换，将被检对象外部的逐层扫描数据通过3次样条函数方法数值求解，从而得到被检对象内部参数分布情况的实验方法。

Map projection ; inverse transformation ; map projection system ; map projection parameters ; algorithm optimization ; error control

地图投影；反解变换；投影体系；投影参数；算法优化；误差控制

In the experiment the pre-processings, such as image filtering and Harris operator corner detector, etc. were used to get feature points quickly and realize the mapping transformation of camera parameters. The error estimate function was established to compare the proposed method with Tsai calibration algorithm.

实验过程中，利用图像降噪、改进的Harris算子角点提取等预处理过程快速提取特征点，实现摄像机参数标定的映射变换；建立了误差评价函数评价本文方法与Tsai标定算法。

In the experiment the preprocessings, such as image filtering and Harris operator corner detector, etc., were used to get feature points quickly and realize the mapping transformation of camera parameters. The error estimate function was established to compare the proposed method with Tsai calibration algorithm.

实验过程中，利用图像降噪、改进的Harris算子角点提取等预处理过程快速提取特征点，实现摄像机参数标定的映射变换；建立了误差评价函数评价本文方法与Tsai标定算法。

With mathematical transformation and approximation, the differential equation of the minority carrier density in a textured cell takes the same form as the flat cell.

而对绒面结构太阳电池的内量子效率和物理参数关系的理论推导，通过数学变换和高阶近似后所得结果，可归结为与平带同质结相同的形式。

With mathematical transformation and approximation, the differential equation of the minority carrier density in a textured cell takes the same form as the fiat cell.

而对绒面结构太阳电池的内量子效率和物理参数关系的理论推导，通过数学变换和高阶近似后所得结果，可归结为与平带同质结相同的形式。

Compared with the geometrical imaging method, the principle of the matrix transformation method is simpler, the meaning of the parameters is more intuitive, and the deriving process is more precise.

与几何成像法求传感器转换公式相比较，矩阵变换法的原理更简洁，参数意义更明显，推导过程更简单易懂。

To apply a transformation matrix to a BitmapData instance, you can pass it directly into the Draw method.

把变换矩阵应用到BitmapData 实例，可以将其作为参数传入Draw方法。

A salient feature of this approach is that a set of fixed matrix transformation parameters can be consistently used for different power systems and various operating conditions.

特别重要的是，这种方法可以用一组固定的矩阵变换参数来适应不同的电力系统和各种运行方式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。