This work presents a novel Dictionary Learning (DL) based framework to detect Cosmic Ray (CR) hits that contaminate the astronomical images obtained through optical photometric surveys. The unique and distinguishable spatial signatures of CR hits compared to other actual astrophysical sources present in the image motivated us to characterize the CR patches uniquely via their sparse representations obtained from a learned dictionary. Specifically, the dictionary is trained on images acquired from the Dark Energy Camera (DECam) observations. Next, the learned dictionary is used to represent the CR and Non-CR patches (e.g., each patch is with
This work is accepted to the 30th European Signal Processing Conference (EUSIPCO) 2022, held in Belgrade, Serbia during 29 August to 2 September 2022. The link for the paper is https://ieeexplore.ieee.org/document/9909810
Following are our major reference from where we adopted the codes and used in this work.
- We adopted Approximate KSVD from https://github.com/nel215/ksvd.
- deepCR baseline model from https://github.com/profjsb/deepCR.