Thursday, February 07, 2019

Sony 1.12um Pixel Reverse Engineering

Australian University of Adelaide group of researches publishes an interesting arxive.org paper with further research of Sony IMX219PQ 1.12um pixel nonuniformities "Reverse Engineering the Raspberry Pi Camera V2: A study of Pixel Non-Uniformity using a Scanning Electron Microscope" by Richard Matthews, Matthew Sorell, and Nickolas Falkner. The paper undergoes a peer review now.

"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."

2 comments:

  1. Could this be voluntarily made in order to compensate some differences between the 4 shared pixels ?

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  2. I'd trust the consistency of Sony's FAB processes before I'd trust the measurement accuracy of a university dual-beam.

    ReplyDelete

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