Research of image preprocessing and corner detection in 3D measurement based on Ridgelet transform

Image preprocessing and corner detection are of importance in 3-dimension measurement based on computer technology. A novel image preprocessing method by combining the deconvolution based on Fourier transform with the white Gaussian denosing method based on finite Ridgelet transform is proposed, and a corner detector is given according to the cornerness of the preprocessed image. The simulation and comparison are made between the suggested method and the classic methods, which shows the suggested method can get a good standard performance image and robust corner detection.