scanimage -A

All options specific to device `genesys:libusb:002:002':
  Scan Mode:
    --mode Color|Gray|Lineart [Gray]
        Selects the scan mode (e.g., lineart, monochrome, or color).
    --source Flatbed|Transparency Adapter [Flatbed]
        Selects the scan source (such as a document-feeder).
    --preview[=(yes|no)] [no]
        Request a preview-quality scan.
    --depth 8|16 [8]
        Number of bits per sample, typical values are 1 for "line-art" and 8
        for multibit scans.
    --resolution 1200|600|300|150|100|75dpi [75]
        Sets the resolution of the scanned image.
  Geometry:
    -l 0..215.9mm [0]
        Top-left x position of scan area.
    -t 0..300mm [0]
        Top-left y position of scan area.
    -x 0..215.9mm [215.9]
        Width of scan-area.
    -y 0..300mm [300]
        Height of scan-area.
  Enhancement:
    --custom-gamma[=(yes|no)] [no]
        Determines whether a builtin or a custom gamma-table should be used.
    --gamma-table 0..16383,... [inactive]
        Gamma-correction table.  In color mode this option equally affects the
        red, green, and blue channels simultaneously (i.e., it is an intensity
        gamma table).
    --red-gamma-table 0..16383,... [inactive]
        Gamma-correction table for the red band.
    --green-gamma-table 0..16383,... [inactive]
        Gamma-correction table for the green band.
    --blue-gamma-table 0..16383,... [inactive]
        Gamma-correction table for the blue band.
    --swdeskew[=(yes|no)] [no]
        Request backend to rotate skewed pages digitally
    --swcrop[=(yes|no)] [no]
        Request backend to remove border from pages digitally
    --swdespeck[=(yes|no)] [no]
        Request backend to remove lone dots digitally
    --despeck 1..9 (in steps of 1) [1]
        Maximum diameter of lone dots to remove from scan
    --swskip 0..100% (in steps of 1) [0]
        Request driver to discard pages with low numbers of dark pixels
    --swderotate[=(yes|no)] [no]
        Request driver to detect and correct 90 degree image rotation
    --brightness -100..100 (in steps of 1) [0]
        Controls the brightness of the acquired image.
    --contrast -100..100 (in steps of 1) [0]
        Controls the contrast of the acquired image.
  Extras:
    --lamp-off-time 0..60 [15]
        The lamp will be turned off after the given time (in minutes). A value
        of 0 means, that the lamp won't be turned off.
    --lamp-off-scan[=(yes|no)] [no]
        The lamp will be turned off during scan. 
    --threshold 0..100% (in steps of 1) [50]
        Select minimum-brightness to get a white point
    --threshold-curve 0..127 (in steps of 1) [50]
        Dynamic threshold curve, from light to dark, normally 50-65
    --disable-interpolation[=(yes|no)] [no]
        When using high resolutions where the horizontal resolution is smaller
        than the vertical resolution this disables horizontal interpolation.
    --color-filter Red|Green|Blue [Green]
        When using gray or lineart this option selects the used color.
    --calibration-file <string> [/home/pietro/.sane/hewlett-packard-scanjet-3670c.cal]
        Specify the calibration file to use
    --expiration-time -1..30000 (in steps of 1) [-2137955552]
        Time (in minutes) before a cached calibration expires.A value of 0
        means cache is not used used. A negative value means cache never
        expires.
  Sensors:
    --scan[=(yes|no)] [no] [hardware]
        Scan button
    --email[=(yes|no)] [no] [hardware]
        Email button
    --copy[=(yes|no)] [no] [hardware]
        Copy button
  Buttons:
    --clear-calibration
        Clear calibration cache