# Filter image¶ Applies simple filtering or scaling algorithms on an image. For more complex operations see the more specialized image manipulation nodes

Algorithms: abs Computes absolute value or complex magnitude of image angle Gives the phase angle of a complex image center image Shifts image so that center of mass lies in center of image clamp Restricts the output values to a given maximum/minimum minimum: The minimum output value that can be passed through maximum: The maximum output value that can be passed through gaussian Two-dimensional Gaussian filter sigma-x: Standard deviation of gaussian filter along X-axis sigma-y: Standard deviation of gaussian filter along Y-axis border mode: Determines how the array borders are handled k: Value outside image borders when method constant is used. hessian determinant Computes an approximation of the determinant of the hessian matrix for each pixel. sigma: Standard deviation of gaussian kernel (default 3.0) used for calculating Hessian. Approximation is not reliable for sigma < 3.0 imag Gives the imaginary part of a complex image integral image Creates the integral image of the input. An integral image contains at coordinate (m,n) the sum of all values above and to the left of it. S(m,n) = sum(im[0:m, 0:n]) normalize Adds a (positive) scale and offset so that smallest/highest value in image becomes 0 and 1 respectively. Operates on each channel separately minimum: Minimum value after normalization maximum: Maximum value after normalization real Gives the real valued part of a complex image scale/offset Adds a scale and/or an offset to each channel equally scale: Scale factor applied to image before offset offset: Offset applied to image after scale to integer Converts all channels into integer data
Inputs: source : image source image to filter result : image result after filtering

Ports:

Inputs:

source: image source image to filter

Outputs:

result: image result after filtering

Configuration:

algorithm
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scale
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k
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sigma-y
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sigma-x
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maximum
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border mode
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minimum
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offset
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sigma
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Some of the docstrings for this module have been extracted from the scikit-image library and are covered by their respective licenses.

class `node_general_filters.``GeneralImageFiltering`[source]