Perspective Transform

Performs a perspective transform in an image by mapping four points (atleast 3 non-colinear) in the input image to specific corresponding points in the output image

Documentation

Performs a perspective transform in an image by mapping four points (atleast 3 non-colinear) in the input image to specific corresponding points in the output image.

The input table should have exactly four rows and four columns. Two of the columns give the XY coordinates of an input point and the other two columns the corresponding point in the output image.

The result is an image after applying the perspective transform implied by the given points.

Definition

Input ports

image image

image to transform

coords table

Table mapping four coordinates

Output ports

result image

Result

Configuration

X column after (xafter)

Column containing X coordinates after transform

X column before (xbefore)

Column containing X coordinates before transform

Y column after (yafter)

Column containing Y coordinates after transform

Y column before (ybefore)

Column containing Y coordinates before transform

Implementation

class node_perspective.PerspectiveTransform