OOF2: The Manual

OOF.Image.Modify.Reilluminate
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Name

OOF.Image.Modify.Reilluminate — Adjust brightness so that the whole image is evenly illuminated.

Synopsis

OOF.Image.Modify.Reilluminate(image, radius)

Details

  • Parent Menu: OOF.Image.Modify
  • Callback: function doImageMod in module ooflib.image.imagemodifier

  • Parameters:

    image
    Type: The path to an existing Image object.
    radius
    Radius of the averaging region in pixels. Type: Integer.

Description

Compensate for uneven lighting in an Image. The average brightness in a circular neighborhood of size radius around each pixel is compared to the average brightness of the whole Image, and the pixel value is scaled by the resulting ratio. The radius is specified in units of the pixel size, and should be large compared to the size of the features in the image, but small compared to the size of the image itself.

Figure 6.41. Reilluminating an Image

Reilluminating an Image

A micrograph of cementite and austenite phases in steel (courtesy of M. Kral) on top, and the result of reilluminating it with three different values of radius. The image is 290 × 230 pixels.


See Also

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OOF.Image.Modify.Normalize  Home  OOF.Image.Modify.Sharpen