hybridized CMOS interpixel capacitance model

Implement a model of Inter pixel capacitance (IPC). When there is IPC, the signal read out on any pixel is affected by the signal in neighboring pixels.

Task list:

  • Simple model: A 3x3 convolution kernel with the central pixel having a value of (1-4a) and the nearest neighbors having a value of a, where a is the coupling coefficient.

  • Intermediate model: A convolution kernel that allows asymmetries. (The math is explained nicely in this paper: https://iopscience.iop.org/article/10.1088/1538-3873/128/967/095001/pdf)

  • Advanced model: A signal level dependent coupling based on physical simulations of the pixel architecture. This would be based on simulations done by Kevin Donlon (described in this paper: https://arxiv.org/pdf/1701.07062.pdf). While these simulations are specific to the H2RG detector, the model developed could be the basis for IPC any hybridized CMOS detector in which there is signal level dependent IPC.

It is likely that this should be implemented in the pixel stage. However, one might argue that it should be implemented at the signal stage because charge on neighboring pixels affects the level read in any given pixel.

Edited by Matej Arko