User Guide

GNU Image Manipulation Program
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Figure 15.226: Gradient map example
From left to right: original image, displacement map, after applying Warp filter with a Gradient Scale map. Gradient is oblique,
from top left to right bottom. The part of the image corresponding to the gradient is moved obliquely, 90 rotated (Rotation
Angle 90 in Advanced options).
The Vector Map
Figure 15.227: Vector map example
From left to right: original image, displacement map, after applying Warp filter with a Vector map. Gradient is vertical, from
top to bottom. Vector angle is 45. The image is moved obliquely, 45 to the top left corner. The image is blurred because every
iteration works on the whole image, and not only on the red bar.
With this map, the displacement depends on the angle you set in the Angle text box. 0 is upwards. Angles go counter-
clockwise. The Vector Magnitude determines by how many pixels the image will move on every iteration.
15.12.12 Van Gogh (LIC)
15.12.12.1 Overview
Figure 15.228: From left to right: original image, map, resulting image
Map has three strips: a solid black area, a vertical gradient area, a solid white area. One can see, on the resulting image, that
image zones corresponding to solid areas of the map, are not blurred. Only the image zone corresponding to the gradient area of
the map is blurred.