Image processing technique and its application in the measurement of electron gun ' s bend and distortion error
2.
Combining with local calibration , the distortion error of the optical system in the camera is corrected
3.
In this paper , the framework error of the system is analyzed quantificationally , and other errors as mechanical distortion error , thermal distortion error , detect error and dynamic error are analyzed qualitatively
4.
The first step is the spatial coordinate conversion , which converts the measurement data from the measurement coordinate system to the theoretical coordinate system . the next step is to work out the systematic distortion errors of the antenna surface . the last step is to found the antenna surface model based upon neural network , then we can get random errors of the measurement data and take the mse ( mean square errors ) as the standard errors of the random errors by statistical method
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