[html5] a question about canvas element's shadow effect
ian at hixie.ch
Wed Jun 10 00:05:08 PDT 2009
On Wed, 20 May 2009, caoyipeng wrote:
> canvas element's shadow effect use Gaussian blur to fulfill.
> In Gaussian blur, when do convolution operation, Gaussian template's size(or
> Gaussian kernel width and height) affect the blur effect
> ,is there default value about Gaussian template's size(such as the size is
> (6ó+1)*(6ó+1),ó is the standard deviation).
The bigger the better. This is just a quality of implementation issue.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
More information about the Help