Patent ID: 9563939
Date: 2017-02-07
CPC Classifications: G06T

Claim:
1. A de-noising method for remote images of ground buildings using spectrum constraints, the method comprising: 1) obtaining a reference image of target ground buildings from a remote image database of ground buildings, performing a Fourier transformation on the reference image to obtain an amplitude spectrum, and performing a threshold segmentation, an erosion operation and a dilation operation successively on the amplitude spectrum to obtain a binary template of spectrum of the target ground buildings; and 2) obtaining a real-time image of the target ground buildings by a high-speed aircraft, performing a Fourier transformation on the real-time image to obtain a spectrum, filtering the spectrum of the real-time image in frequency domain by the binary template of spectrum of the target ground buildings to obtain a filtered spectrum, and performing an inverse Fourier transformation on the filtered spectrum to generate a denoised real-time image of the target ground buildings.