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- W2891766830 abstract "We consider an acquisition system where a continuous image is reconstructed from a set of irregularly distributed noisy samples. Moreover, the system is affected by a random pointing jitter which makes the actual sampling positions different from the nominal ones. We develop a model for the system and derive the optimal, minimum variance unbiased (MVU) estimate. Unfortunately, the latter estimate is not practical to compute when the data size is large. Therefore, we develop a simplified, low resolution model and derive the corresponding MVU estimate, which has a drastically lower complexity. Moreover, we analyze the estimators' performance by using both theoretical analysis and simulations. Finally, we discuss the application to the data of the Photodetector Array Camera and Spectrometer (PACS) instrument, which is an infrared photometer on board the Herschel satellite." @default.
- W2891766830 created "2018-09-27" @default.
- W2891766830 creator A5081554435 @default.
- W2891766830 date "2019-02-01" @default.
- W2891766830 modified "2023-10-03" @default.
- W2891766830 title "Image Estimation in the Presence of Irregular Sampling, Noise, and Pointing Jitter" @default.
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- W2891766830 doi "https://doi.org/10.1109/tip.2018.2869725" @default.
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