First use Otsu algorithm and Radon transform to pick up the outline,use the coordi- nates of 4 points to calculate the ratio of the rectangle,and then derive the correction matrix to distort the image.

Adulteration detection method on edible oils by microwave-assisted derivatization and GC-MS coupled with calibration transformation matrix;

An adulteration detection method on edible oils by microwave assisted derivatization and GC MS to determinate fatty acids coupled with calibration transformation matrix was developed.

Line-based nonlinear distortion correction of a calibration image;

BP NN-based method for lens distortion correction of large-field imaging;

Method for on-line calibration and distortion correction of image measurement system;

The algorithm overcame the disadvantage that the algorithm convergence was caused by the correct matrix singularity when the fiber became longer.

The paper analyses the cause of anomalous stretch of normal moveout in seismic data processing and the characteristics digital normal moveout correction.

In order to solve the opto-distortion problems of medical electronic endoscope, the theory of real-time distortion correction system of medical electronic endoscope and the realization of hardware system are introduced.