An algorithm is presented based on curvature variance to calibrate the lens distortion of digital camera.
提出了基于曲率变化的畸变差检校方法。
By discussing the theory on camera calibration with vanishing points and analysing the errors resul- ted from calibration based on vanishing points,a novel approach to camera calibration by vanishing points in muhi images is proposed to acquire orientation parameters,even radial lens distortion and thereby to improve the precision of interior and exterior orientation parameters.
这种方法克服了原有理论的缺陷,可对相机的内外方位元素以及畸变差联合求解,使标定结果更加精确、稳定。
In 3D visual inspection applications, there usually exists a distortion error of the CCD camera s pin hole image of ellipse center.
针对在三维视觉检测应用中 ,空间椭圆的中心经摄像机针孔成像后存在畸变误差的问题进行了研究 。
For the slanting installation of optical system,the distortion error models are established and the simulations are done.
针对光学系统的倾斜安装,建立畸变误差模型并仿真分析,得出结论:光学系统光轴平行于转轴时,像点坐标不因平面镜旋转角度的不同而存在误差,变化的仅是折射光线与光轴的夹角;光轴与转轴相交时,像点坐标随光轴与转轴的夹角、焦距和平面镜初始位置法线与转轴夹角的变化而产生较大的畸变误差。
The ellipse curre equation of circular image is derived based on the theory of spatial analytic geometry and rotation matrix s representation with unit quaternion then a mathematical model of the distortion error is established which relates the distortion error to the foca length of the used CCD camera,the radius as well as the position and the attitude of the inspected circle directly.
研究三维视觉检测中圆的中心经针孔摄像机成像后存在畸变误差的问题,首先基于空间解析几何理论和旋转矩阵的四元数表示法推导出像平面上投影椭圆的参数方程;然后根据参数方程建立圆中心成像畸变误差的数学模型;最后对影响畸变误差的主要因素进行分析。
photogrammetric distortion
摄影测量畸变差，畸变差
Study on the Camera Distortion Correction Based on the Fundamental Matrix
基于基本矩阵的相机畸变差校正方法研究
The Error Analysis of Current Transformer Based on Waveform Distortion Ratio
基于波形畸变的电流互感器误差分析
Research on Scanning Distortion and Mounting Error of Optical System of Laser Trimming Machine;
激光调阻机光学系统扫描畸变及安装误差研究
Research of Laser Small-scale Distorted Wavefront Sensing Accuracy and Error Analysis;
激光小尺度畸变波前探测精度和误差分析研究
Analysis on the Error Characteristic of Modulated Phase Distortion in Fiber Optic Gyroscope
光纤陀螺仪调制相位的畸变误差特性分析
The normal value of DPOAE and effect of intensity differ of probe tone
畸变产物耳声发射的正常值及探测音强度差对其的影响
Research of Laser Small-scale Distorted Wavefront Sensing System Error Analysis and Rectification;
激光小尺度畸变波前探测误差分析及其补偿研究
Anastigmatic lens: Photographic lens corrected for astigmatism as well as other distortions. Process camera lenses are anastigmats.
消像差透镜:消除纵横像差和其他畸变的摄影用透镜。制版照相机所用的镜头是消像差透镜。
Based on the traditional phase unwrapping algorithm and the characteristic that interference phase is smooth, the algorithm adopts image processing techniques to discernment and revise the unwrapping errors and its derive errors.
引入图像分析处理技术，以识别并修正传统算法产生的误差点和由于误差点延伸产生的畸变点。
The results indicate the beam in both near and far f ield will be aberrated and simultaneously the beam quality will be deteriorated when misalignment appears.
结果表明,腔镜倾斜使光束近场分布变差,致使远场光束发生畸变,质量下降。
twised nematic
扭曲排列的向列相畸变
maximum undistorted output
最大无畸变输出功率
distortion-correcting apparatus, photogrammetric
摄影测量畸变改正仪
isochronous signal distortion tester
等时信号畸变测试器
top bottom pincushion correction circuit
上下枕形畸变校正电路
isochronous signal distortion testing equipment
等时信号畸变测试仪
optical keystone corrector
光学梯形畸变校正器