TY - JOUR
T1 - Geometric distortion correction for sinusoidally scanned images
AU - Xu, Lijun
AU - Tian, Xiangrui
AU - Li, Xiaolu
AU - Shang, Guangyi
AU - Yao, Junen
PY - 2011/11
Y1 - 2011/11
N2 - A method for correcting the geometric distortion of sinusoidally scanned images was proposed. The generation mechanism of the geometric distortion in sinusoidally scanned images was analyzed. Based on the relationship between the coordinates of uniformly scanned points and those of sinusoidally scanned points, a transformation formula was obtained for correcting the geometric distortion when the sampling rate was a constant. By comparing the forward method with the inverse method, a hybrid method for correcting the geometric distortion of sinusoidally scanned images was proposed. This method takes advantage of both the forward and inverse methods and was proven to be better than either of them in terms of peak signal-to-noise ratio (PSNR). The time consumed by the hybrid method was between the other two. When a higher PSNR is desired, the hybrid method is recommended if time permits. In addition, it is a universal approach to the correction of geometric distortion of the images scanned in the sinusoidal mode.
AB - A method for correcting the geometric distortion of sinusoidally scanned images was proposed. The generation mechanism of the geometric distortion in sinusoidally scanned images was analyzed. Based on the relationship between the coordinates of uniformly scanned points and those of sinusoidally scanned points, a transformation formula was obtained for correcting the geometric distortion when the sampling rate was a constant. By comparing the forward method with the inverse method, a hybrid method for correcting the geometric distortion of sinusoidally scanned images was proposed. This method takes advantage of both the forward and inverse methods and was proven to be better than either of them in terms of peak signal-to-noise ratio (PSNR). The time consumed by the hybrid method was between the other two. When a higher PSNR is desired, the hybrid method is recommended if time permits. In addition, it is a universal approach to the correction of geometric distortion of the images scanned in the sinusoidal mode.
KW - atomic force microscope
KW - coordinate transformation
KW - geometric distortion correction
KW - peak signal-to-noise ratio
KW - sinusoidal scanning
UR - https://www.scopus.com/pages/publications/80054758423
U2 - 10.1088/0957-0233/22/11/114023
DO - 10.1088/0957-0233/22/11/114023
M3 - 文章
AN - SCOPUS:80054758423
SN - 0957-0233
VL - 22
JO - Measurement Science and Technology
JF - Measurement Science and Technology
IS - 11
M1 - 114023
ER -