Blur Layer

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Revision as of 23:14, 1 October 2007 by Dooglus (Talk | contribs) (Specific Parameters)

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About Blurs

Blur is a graphical effect that aims to imitate an unfocused image. In a photography context blur can occur when the focal point of the lens is not at the right position of the target of the photograph. Also blur can have other origins. Blurs can happen as the result of a poor exposure during its recording (too long exposure time for a large movement of the object or a high movement of the recorder). Also blurring occurs when you use a very wide aperture (f4). In that case the objects that are out of focus are very blurred compared to the situation where the aperture is fully closed (f22).

In a graphical context, blurs are effects that imitate those situations (with more or less success).

Specific Parameters

The specific parameters for the Blur Layer are:

BlurLayer-Params.png

Size

The Size parameter controls how big is the blur. Depending on that value the blur can have different effects. If you increase so much the blur value the render time increases a lot so be careful.

This parameter is a compound value of two real numbers (x and y). Everyone indicate how big is the blur in its direction (x or y).

See the samples to get an idea of the variation on the sizes.

Types

There are 5 types of blur in synfig:

Samples

Here there are some samples of Blurs.

Fast Gaussian

Fast Gaussian Blur
BlursFastGaussian.png Blurs2FastGaussian.png


Box

Box Blur
BlurBox.png Blurs2Box.png


Cross Hatch

Cross Hatch Blur
BlurCrossHatch.png Blurs2CrossHatch.png


Disc

Disc Blur
BlurDisc.png Blurs2Disc.png


Gaussian

Gaussian Blur
BlurGaussian.png Blurs2Gaussian.png


Fast Gaussian Blur over all the layers
Blur.png


See also

  • Radial Blur with a radial control of the size of the blur.
  • Motion Blur a type of blur that want to simulate a motion blur (the one that happen when the object's movement is faster than the exposition time). It is controlled by a single parameter called "Apertue".


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