Re: Can CCD camera output more than just intensity information of image?

CCD matrix have some connections between photosites => in case of
saturation, part of
accumlated charge in the well of one photosite can overflow on neigborhood
photosite.

Unfortunatly it is a parasitic effect leading to 'smear effect'. Completely
uncontrolable

regards


"Jerry Avins" <[EMAIL PROTECTED]> a écrit dans le message news:
[EMAIL PROTECTED]
> walala wrote:
>
> > Dear all,
> >
> > I am curious about how CCD works to pick up images... more specifically,
I
> > wonder CCD camera can output more than just pixel intensity information
of
> > an image? For example, I want to know the "variation" property of a
block of
> > an image, for example, a 8x8 block... roughly classified into "smooth"
block
> > and "non-smooth" block, two classes...
> >
> > I want to know if CCD can judge this very roughly and output some
currents
> > to indicate this? Anagolous to human eyes, human eyes can tell which
part of
> > the image is "highly non-smooth" at one glance... can CCD do that?
> >
> > Thanks a lot,
> >
> > -Walalla
>
> "Retina" means "little net". A retina is more than a collection of
> sensors. It also has connections between sensors that compare outputs
> and derives information about differences and commonalties among them.
> Most of the information passed up the optic nerve is of this derivative
> type.
>
> CCDs have no such interconnections. They do no intermediate processing
> at all. Given the present state of our knowledge, we can't make very
> good use of the higher-level processing that the eye does. I expect that
> the depth of our knowledge and the complexity of imaging arrays will
> advance together, but there's a long way to go.
>
> Jerry
> --
> Engineering is the art of making what you want from things you can get.
> ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
>