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Original question:

TDA4VM: TDA4x LSC concept

TDA4VM: LSC Input table

Prathiksha Chikkamadal Manjunatha
Prodigy 95 points

Part Number: TDA4VM

Hi,

I am trying to tune IMX623 images for the LSC plugin. I came across a LSC plugin tuning file (attached) which describes on how to compute the LSC LUT, but we do not have the lens vendor information and so we do not have any lens shading spec file to generate the LUT. Can I please get some input on this, is it possible to  provide the LSC_input table file for the IMX623 imagers. Also can I know how to choose to M and N value (downsampling window size) mentioned the document attached.

 1854.J7_ISP_LSC.pdf

  • 0
    TI__Guru 66310 points

    Hi,

    We don't have any IMX623 camera or information about its shading property.

    M and N values are not very critical or sensitive.
    You may choose M and N such that the resulting LUT can fit into the limited on-chip LSC LUT memory.
    For 3MP sensors, M=N=32 shall be fine.
    Please refer to the NDA version of TDA4 TRM for more details.