This filter displaces pixels of active layer or selection according to the gray levels of a Displacement map. Pixels are displaced according to the gradient slope in the displacement map. Pixels corresponding to solid areas are not displaced; the higher the slope, the higher the displacement.
Este filtro ofrece la posibilidad de enmascarar una parte de la imagen para protegerla de la acción del filtro.
This filter is found in the main menu under
→ → . This filter has no Preview.Opciones básicas
“Paso” es la distancia de desplazamiento de cada iteración del filtro. Es necesario un valor 10 para obtener un píxel de desplazamiento. Este valor puede ser negativo para invertir la dirección del desplazamiento.
El número de repeticiones del efecto cuando se aplica el filtro.
Because of displacement, a part of pixels are driven over the borders of layer or selection, and, on the opposite side, pixels places are emptying. The four following options allow you to fix this issue:
Los que salen por un lado entran por el lado opuesto (esto es lo predeterminado).
Emptying places are filled with a spreading of the neighboring image line.
Los lugares vacíos se rellenan con color negro.
Los lugares vacíos se rellenan con el color de frente del área de color de la caja de herramientas.
To be listed in this file picker, the displacement map, which should be a grayscale image, must be present on your screen when you call this filter and must have the same size as the original image.
Opciones avanzadas
Once all pixels are displaced, this option scatters them randomly, giving grain to the image. The higher this value (0.00-100.00), the thinner the grain.
This option sets the displacement angle of pixels according to the slope direction of the gradient. Previous examples have been created with a vertical gradient and a 90° angle: so, pixels were displaced horizontally and nothing went out of the image borders. Here is an example with a 10° angle and 6 iterations:
Si especifica un valor > 1, el vector de desplazamiento se calcula en varios sub-pasos, dándole un control más fino al proceso de desplazamiento.
In addition to displacement map, you can add a Magnitude map. This map should also be a grayscale image, with the same size as the source image and which must be present on your screen when you call the filter. This map gives more or less strength to the filter on some parts of the image, according to the gray levels of this magnitude map. Image areas corresponding to white parts of this map will undergo all the strength of the filter. Image areas corresponding to black parts of the map will be spared by the filter. Intermediate gray levels will lessen the filter action on corresponding areas of the image. Use magnitude map must be checked for that.
Más opciones avanzadas
Estas opciones extra permiten añadir dos nuevos mapas, un mapa de degradado y/o un mapa de vector.
Nota | |
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Para probar estas opciones solas, se debe usar un mapa con un color sólido para todos los otros mapas. |
Using a gradient map, (this map should also be a grayscale image), the displacement of pixels depends on the direction of grayscale transitions. The Gradient scale option lets you set how much the grayscale variations will influence the displacement of pixels. On every iteration, the filter works on the whole image, not only on the red object: this explains blurredness.
In the example above, “Warp” filter is applied with a gradient map (Gradient scale = 10.0). The 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).
Con este mapa, el desplazamiento depende del ángulo que establece en la caja de texto Ángulo. 0° es hacia arriba. Los ángulos van en sentido antihorario. El Mapa de control del vector determina la cantidad de píxeles de la imagen que se moverán en cada iteración.
In the above example, “Warp” filter is applied with a Vector magnitude. 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.
Ángulo para el mapa del vector fijado (ver arriba).