every detection element's responsivity of infrared focal plane arrays(IRFPA) is different,which results in non-uniformity of IRFPA.So non-uniformity correction(NUC) is an important technique for IRFPA.The traditional NUC algorithms based on neural network were analyzed in this study.And a new ...
This method employs uniform blackbody as reference irradiance sources to calculate the correction parameter. The advantages of these methods lie in its simplicity and low computational complexity. Thus, it is very suitable to implement this kind of algorithms on the embedded hardware platform. For ...
Algorithms for calibration and point-source extraction for a LWIR space-based sensor Dean S. Garlick,Mark Greenman,Mark F. Larsen,... - Proceedings of SP... - 1996 - 被引量: 8 An Improved Non-uniformity Cor...
Various methods have been devised to detect and correct for non-uniformity in MRI data sets; however, few studies have compared the performance of different non-uniformity-correction (NUC) algorithms on standardized sets of brain images. Moreover, the evaluation of NUC algorithms is not ...
Non-uniformity correction of infrared images by midway equalization. Image Process. Online 2, 134–146 (2012). Article Google Scholar Pipa, D. R. et al. Recursive algorithms for bias and gain nonuniformity correction in infrared videos. IEEE Trans. Image Process. 21(12), 4758–4769 (2012)...
Aiming at solving the target fade-out and ghosting problems widely existed in the scene-based correction algorithms of infrared focal plane array(IRFPA),a new adaptive correction algorithm based on motion guidance is proposed.Firstly,a background image and bad-cell template is prepared for the real...
Based on analyzing the mechanism of the Hyper-Spectral CCD Imager′s non-uniformity and several non-uniformity correction algorithms. The method of two-poi... L Xue,Z Li,C Li,... - 《Acta Photonica Sinica》 被引量: 38发表: 2006年 Another look at non-uniformity We argue that it is un...
Thus most inhomogeneity correction algorithms assume some kind of explicit smoothness criteria on the field. This sometimes limits the performance of the algorithms if the actual inhomogeneity is not smooth, which is the case at higher field strength. We describe a model-free, non-parametric patch-...
Typically, algorithms to extract the B1− sensitivity maps from the coil images make two assumptions [[5], [6], [7]]: (a) the imaged object is composed of regions of predominately homogenous signal intensity, and (b) the signal intensity variations between these regions are drastically ...
The algorithms represent an optimized distribution of the nodes by solving for the equilibrium conditions where electrical repulsion between the nodes is balanced by the spring force attracting the nodes. 1. Rockel, A. J., Hiorns, R. W. & Powell, T. P. The basic uniformity in structure of...