Hello John,

>If that is the case, you must be
> doing some sort of propriety
>interpolations between pixels.

It is not a proprietary; we use tri-linear interpolation.

>That is actually a dangerous thing to do
>when the images are medical related --- as
> this implies the information in the original
> image will be distorted.

The tri-linear interpolation is totally legitimate to use in the
medical applications. It preserves the data range; means that
interpolated values remain within range of interpolating nodes. Matter
of fact, an oblique MPR of all professional medical workstation uses
tri-linear interpolation. The same is true for volume rendering - all
professional medical workstation uses tri-linear interpolation. The
high quality rendering of our solution is the result of supersampling
- density of sampling points along ray is 32/16 sampling points per
voxel/cell. Each sampling point is the output of tri-linear
interpolation. Each pixel on projection plane is source of ray so;
density of rays depends on zoom (for zoom 16 - the density is 16 rays
per voxel).

> Just curious.  What is the use of high def
> magnification/image rendering if the source
> (ie. hardware) that generates these images
> cannot produce high resolution images.

Curious statement. All images you can see
on our web site <www.fovia.com> are rendered
from CT/MRI data sets 1-5 years old. The size
of data sets are within range 512 x 512 x [300..1800].

Regards,
George


John Lai wrote:
> Hello George,
> Just curious.  What is the use of high def magnification/image rendering i
f
> the source (ie. hardware) that generates these images cannot produce high
> resolution images.  Or is that your produce can produce high resolution
> images from low resolution image sources?  If that is the case, you must b
e
> doing some sort of propriety interpolations between pixels.  That is
> actually a dangerous thing to do when the images are medical related --- a
s
> this implies the information in the original image will be distorted.  May
> be good for digital photography, definitely not good for medical diagnosti
c
> purposes.
> Can you shed some light on these issues.
> Also, are there any current hardware manufacturers making super high
> resolution scanning machines out there?
>
> Regards,
> John
>
> <buyanovsky@attbi.com> wrote in message
> news:1118173776.469362.107730@g43g2000cwa.googlegroups.com..
> Hello,
>
> This post concerns anyone who has interest in volume rendering image
> processing.
>
> Fovia Inc., headquartered in Palo Alto, California, has developed High
> Definition Volume RenderingT, a proprietary, software-only technique
> that delivers unparalleled quality and performance.
>
> Fovia's High Definition Volume RenderingT has established a new
> quality/performance level for volume rendering imaging.
>
> The company's website can be found at:
>
> http://www.fovia.com/
>
> Feel free to e-mail us your constructive comments and questions.
>
> Regards,
> George Buyanovsky

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