ABBYY FineReader Engine 11 CLI for Linux

Documentation Home / Image Processing Keys

Below you can find the description of the image processing keys of the abbyyocr11 utility.
Note: full keys are marked by italic.

 

Key Parameters Default Description
-ics --correctSkewMode
BlackSquaresHorizontally,
BlackSquaresVertically,
HorizontalLines,
VerticalLines,
HorizontalText,
VerticalText
HorizontalText  VerticalText Specifies the mode of skew correction.
-idcs --dontCorrectSkew
no   By default skew is corrected. This option specifies not to correct skew.
-ibfc --backgroundFillingColor
int value of the color -1
(automatic detection)
Specifies the color used for filling the areas which are added to the image after skew correction.
The int value is calculated from the RGB triplet using the formula: (red value) + (256 x green value) + (65536 x blue value).
-icp --createPreview
no   Creates preview page for the prepared image.
-ic --imageCompression
NoCompression,
Compress,
Auto
Auto Specifies how an image should be compressed during conversion to the internal format.
-ii --invertImage
no   Inverts the colors of the prepared image.
-im --mirrorImage
no Mirrors the prepared image around its vertical axis.
-ibw --convertToBWImage
no Leaves only black-and-white planes in the prepared image.
-iufb --useFastBinarization
no Speeds up binarization however its quality may deteriorate.
-iph --previewHeight
height in pixels of the preview page 90 Specifies the height in pixels of the preview page.
-ipw --previewWidth
width in pixels of the preview page 64 Specifies the width in pixels of the preview page.
-ir --imageRotation
NoRotation
Clockwise
Counterclockwise
Upsidedown
Specifies the rotation angle to apply to the image during preparation.
-ior --overwriteResolution
no   Allows you to overwrite resolution of the prepared image.
-ixr --xResolutionToOverwrite
horizontal resolution in dpi 300 Specifies the value in dpi is used to overwrite horizontal resolution of the prepared image when resolution of the original image is not specified or incorrect and only if the -ior key is used.
-iyr --yResolutionToOverwrite
vertical resolution in dpi 300 Specifies the value in dpi is used to overwrite vertical resolution of the prepared image when resolution of the original image is not specified or incorrect and only if the -ior key is used.
-idaor --dontAutoOverwriteResolution
no   Disables automatic overwriting of resolution. This option can be useful in case images always have correct resolution.
-ippm --photoProcessingMode
TreatAsPhoto
TreatAsNonPhoto
Auto
Auto Specifies whether the processing image should be treated as a photo. If a photo is processed, special algorithms are used for such image on different stages of image processing.

When Auto is used, automatic detection is performed whether the image is a photo or not.

-igcm --geometryCorrectionMode
Correct
DontCorrect
Auto
Auto Specifies whether geometrical distortions (perspective on photos, curved lines from scanned books, etc.) should be removed during page preprocessing.

When Auto is used, automatic detection is performed whether geometry correction needs to be performed or not.

-ielc --enhanceLocalContrast
no   Specifies whether the local contrast of the image should be increased. Such preprocessing may increase the quality of recognition.

Note: Using this option is meaningful for color and gray images only.

-icsah --correctShadowsAndHighlights
Yes
No
Auto
Auto With Yes the image preprocessing will include correction of excessive shadows and highlighting to improve recognition quality.

Note: This property is designed for use with photographs only.

-ieqbr --equalizeBrightness
NonwhiteBackground
WhiteBackground
  Equalizes the image brightness. This option is suitable for the following types of images:
  • Scanned images of black-and-white documents. You can change the background color of a scanned image from gray to white and increase image contrast.

  • Photos of black-and-white document. You can change the background color of a photo to white, increase image contrast, and even brightness of a photo made under poor lighting conditions or with a flash turned on.

  • Photos of color documents. This option provides the same effect as for photos of black-and-white documents, but it may reduce color brightness and make gray elements too light. Use the option for photos of color documents carefully.
Note: This option is meaningful for gray and color images only.

With WhiteBackground brightness of the image is evened so that the background becomes really white.

 

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