Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reverse Engineering the Raspberry Pi Camera V2: A study of Pixel
  Non-Uniformity using a Scanning Electron Microscope   In this paper we reverse engineer the Sony IMX219PQ image sensor, otherwise
known as the Raspberry Pi Camera v2.0. We provide a visual reference for pixel
non-uniformity by analysing variations in transistor length, microlens optic
system and in the photodiode. We use these measurements to demonstrate
irregularities at the microscopic level and link this to the signal variation
measured as pixel non-uniformity used for unique identification of discrete
image sensors.

4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat