Filter image¶
Applies simple filtering or scaling algorithms on an image. For more complex operations see the more specialized image manipulation nodes
Documentation
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
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.
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
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
- Input ports:
source : image
source image to filter
- Output ports:
result : image
result after filtering
Definition
Input ports
- source
image
source image to filter
Output ports
- result
image
result after filtering
- Configuration:
- Algorithm (algorithm)
(no description)
- border mode (border mode)
(no description)
- k (k)
(no description)
- maximum (maximum)
(no description)
- minimum (minimum)
(no description)
- offset (offset)
(no description)
- scale (scale)
(no description)
- sigma (sigma)
(no description)
- sigma-x (sigma-x)
(no description)
- sigma-y (sigma-y)
(no description)
- class node_general_filters.GeneralImageFiltering[source]