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Retinex

    Name

    Retinex

    Software

    ImageJ

    Author

    Francisco Jiménez Hernández

    Maintainer

    Francisco Jiménez Hernández

    Source

    on GitHub

    Status
    Category

    :Category:Plugins

    Retinex

    Retinex filtering is based on Land’s theory of image perception, proposed to explain the perceived colour constancy of objects under varying illumination conditions. Several approaches exist to implement the retinex principles, among these the multiscale retinex with colour restoration algorithm (MSRCR) combines colour constancy with local contrast enhancement so images are rendered similarly to how human vision is believed to operate.

    Usage

    Level
    specifies distribution of the Gaussian blurring kernel sizes for Scale division values > 2:

    Uniform
    tends to treat all image intensities similarly,

    Low
    enhances dark regions of the image,

    High
    enhances the bright regions of the image.

    Scale
    specifies the depth of the retinex effect.

    Scale division
    specifies the number of iterations of the multiscale filter. Values larger than 2 exploit the “multiscale” nature of the algorithm.

    Dynamic
    adjusts the colour of the result. Large values produce less saturated images..

    Example

    Original:

    After Retinex (default parameters):

    Homepage

    Please find the original page for the Retinex plugin here.