A Subpixel Registration Algorithm for Low PSNR Images

Abstract

This paper presents a fast algorithm for obtaining high-accuracy subpixel translation of low PSNR images. Instead of locating the maximum point on the upsampled images or fitting the peak of correlation surface, the proposed algorithm is based on the measurement of centroid on the cross correlation surface by Modified Moment method. Synthetic images, real solar images and standard testing images with white Gaussian noise added were tested, and the results show that the accuracies of our algorithm are comparable with other subpixel registration techniques and the processing speed is higher. The drawback is also discussed at the end of this paper.

arXiv commentin 2012 IEEE 5th Int. Conf. on Advanced Computational Intelligence (ICACI) (New York: IEEE), 626

Cited by in corpus (13)

• A magnetic reconnection event in the solar atmosphere driven by relaxation of a twisted arch filament system
• The formation of an inverse S-shaped active-region filament driven by sunspot motion and magnetic reconnection
• Partial eruption of a filament with twisting nonuniform fields
• Two-Spacecraft Detection of Short-period Decayless Kink Oscillations of Solar Coronal Loops
• Dispersal of G-band bright points at different longitudinal magnetic field strengths
• Investigation of intergranular bright points from the New Vacuum Solar Telescope
• High-frequency Oscillations in the Atmosphere above a Sunspot Umbra
• How eruptions of a small filament feed materials to a nearby larger-scaled filament
• Dynamics of descending knots in a solar prominence and their possible contributions to the heating of the local corona
• Investigation of Umbral Dots with the New Vacuum Solar Telescope
• The Lyman-$\alpha$ Emission in a C1.4 Solar Flare Observed by the Extreme Ultraviolet Imager aboard Solar Orbiter
• Investigations of Sizes and Dynamical Motions of Solar Photospheric Granules by a Novel Granular Segmenting Algorithm
• Image Registration Based Flicker Solving in Video Face Replacement and Analysis Based Sub-pixel Image Registration