In certain existing CCTV surveillance
systems it is possible to increase its resolution from 2 times standard
resolution, to 16 times.
This is accompolished by the addition
of a system called Extended Resolution Imaging (ERI).
ERI takes advantage of the spacing
and finite size of CCD photosites. 
The Extended Resolution is accompolished
by the addition to an existing CCTV system of a two enexpensive components.
1) A modified Taking Lens (ISD Lens), and 2) a Lens Controller (ISD
In normal operation the the Modified
CCTV system records images on a standard VCR, as before.
The Extended Resolution Image is
derived --only when needed--by the use of a PC workstation running special
software that takes any sequential "n" fields/frames  and derives a
single High Resolution image
|The Hi-Res Camera System has the
It is based on taking advantage
of the space between active photo sites.
Early cameras physically moved the
CCD array--moving the sites to otherwise unsensed areas of the image.
This approach slowed the image capture
time; and was used mainly for archival imaging.
My approach moves the image instead
of the CCD array, and does it in real-time. That is, a new position every
field time (16.667msec).
There are two versions:
is used for real time Video capture, and along with the
(lens bound) Image Shifting Device (ISD), requires a
specialized frame buffer for real-time video output.
does not require a frame buffer. Its use is mainly for
surveillance camera recording systems where
real-time high resolution is not required.
The high resolution information is retrieved--after the
fact--using a workstation running specialized software. See
FEATURES, Version Two:
Multiplication is programmable: Horizontal X 2, X3, X4; Vertical
X 2, X3, X4 (Horizontal & Vertical resolution are independent of one
for image resolution multiplication resides in the camera's (taking) lens.
This has the advantage of upgrading or retrofitting existing camera systems.
||The output, for all intents and
purposes, is NTSC (RS-170A interlaced) compatible, i.e., it can be tape
(a).. At any given time,
each field or frame has video that is
to the portion of the sensed image.
(b).. However, when viewed
on a standard NTSC display,
appears no different than a standard NTSC camera.
essence, it trades TIME for RESOLUTION.
"high resolution" images requires a specialized software package (running
on a workstation) such that, in a X4 by X4 resolution scenario, any 16
sequential images (fields or frames) can reproduce a single Hi Res image
having a total resolution increase of X16. (this is the highest resolution
attempted, or was theoretically possible in the prototype at that time).
At the time of its development, the
system had a great potential as a ubiquitous Hi-Res solution in almost
every category, from Scientific, industrial, to consumer. However, with
the advent of multi megapixel CCDs and digital cameras, its competitiveness
In my estimation however, it is a
inexpensive method of upgrading existing surveillance camera systems.
Additionally, it may also be a viable solution for new surveillance camera
With the world climate change brought
on by the WTC attack, high quality surveillance camera systems are sorely
needed, and needed NOW!