gaussian blur

Andy Green andy at openmoko.com
Wed Mar 19 12:14:57 CET 2008


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Somebody in the thread at some point said:
> Andy Green wrote:
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>> Somebody in the thread at some point said:
>>> Dodji (or anyone else)
>>>
>>> What kinds of filters can we quickly perform with the Glamo? For
>>> example, could I do a Gaussian blur of the entire screen?
>>
>> There is no explicit transform like that, but maybe the 3D unit's
>> filtering stuff could be abused, or the on-chip OpenRISC harnessed to do
>> it local to the Glamo (but that is not a small project to start using
>> that).
> 
> OK. I was just thinking that since we have an unused camera module in
> there, maybe we could use it in reverse, on the interface itself. Most
> cameras on phones have filters. I remember at some point reading that
> the Glamo had basic stuff like Sepia.

I didn't think of this.  The unit that does that is not in the camera
bit itself but a thing on its own called "ISP".  But when I read about
these effects, they are just a small selection of canned ones you can
turn on or off that don't make the blur action

 - Enable Emboss image effect function
 - Enable edge enhancement
 - Enable Solat image effect
 - Enable Negative image effect
 - Enable Inverse Multiply effect

I guess sepia is done with the colour correction stuff.

- -Andy
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