Sensing movement in head-foloowing webcam

Where is movement sensed in those webcams which have head-following ...

Is it all done in the webcam itself ?

-or-

Does the PC process the moving image and determine where the camera has
to point and then tell the webcam?

> Does the PC process the moving image and determine where the camera has
> to point and then tell the webcam?

On 06 Jun 2007, Noozer <dont.spam@me.here> wrote:

>
>> Does the PC process the moving image and determine where the
>> camera has to point and then tell the webcam?
>
>
>


What does this reply mean?

Jon D wrote:
> On 06 Jun 2007, Noozer <dont.spam@me.here> wrote:
>
>> Does the PC process the moving image and determine where the
>> camera has to point and then tell the webcam?
>
> What does this reply mean?

Obviously nothing, lacking suitable quotes, etc.

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