Imagick::contrastStretchImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::contrastStretchImage — Enhances the contrast of a color image

    Descrição

    publicImagick::contrastStretchImage(float$black_point, float$white_point, int$channel = Imagick::CHANNEL_DEFAULT): bool

    Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available. Este método estará disponível se a extensão Imagick tiver sido compilada com a ImageMagick versão 6.2.9 ou superior.

    Parâmetros

    black_point

    The black point.

    white_point

    The white point.

    channel

    Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Imagick::CHANNEL_ALL. Refer to this list of channel constants.

    Valor Retornado

    Retorna true em caso de sucesso.

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