Band in the mapping photo

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  • #3945

    anchutka
    • Sophomore Member
    • ★★

    Good afternoon! Why is the black vertical band visible in the mapping photo?

    #3946

    Hi! Would you mind attaching an image of what you are seeing? Thin vertical bands in a hyperspectral image are normal, but if they are multiple pixels wide, there may be dust on the optics or an issue with the camera (likely the former).

    #3950

    anchutka
    • Sophomore Member
    • ★★

    Good afternoon! Attach photos.

    Attachments:
    #4368

    anchutka
    • Sophomore Member
    • ★★

    Good afternoon! So still this dust on the optics or an issue with the camera?

    #4369

    Hello! This is normal. This band is caused by a “hot” pixel. If you look at the Z profile spectrum of a pixel along that band, it should have a sharp spike. It does not appear that there is any defect in the camera.

    #4370

    anchutka
    • Sophomore Member
    • ★★

    Hello, Elyse!
    Thank you for your reply.
    Are there any ways to fix this error? It highly impedes our work. And we need good mapping pictures. Does it influence the results (mean values etc)? Should we reinstall the Envi program?

    Sincerely,
    Anna

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