Hello,
Over the past several months. Our communications group has been searching for a better compression scheme then JPEG2000 provides.
We are looking for the best possible image file compression with the least amount of image data loss.
This codec will be used with HF Radio mail and data transfer applications such as SCAMP, WINLINK 2000 and DRM™ - Digital Radio Mondiale to transmit missing person and other image data via HF radio.
To our disappointment we have not been able to find anything better then JPEG2000 other then three companies that appear no more then snake oil salesmen.
Even Technologies
Let it Wave
ABO Image compression
The reasons I make such a comment are:
This sounds like snake oil to me unless.
a) You are starting with a small picture in the first place. 64*64 pixels for example would give a picture to match the main features of the person in question, but I sure would not want to use it for access control.
b) What is store is a ‘fingerprint’ or hash-value of the features of the photo. In that case you could not really recreate the photo from the compressed data. Rather you compare the hash-value of the original master
photo to any later photos supplied to see how close a match you can get
> CodecID implements a truly unique technology =
> by improving by more than a factor three the compression obtained with =
> JPEG 2000, which is the state of the art technology for photo =
> compression. It is the result of a research program in mathematical =
> image processing led by internationally renowned scientists, major =
> contributors to the JPEG-2000 standard.=20
Second snake oil moment. ‘internationally renowned scientists’ but no names that you can call and check up on. Still sounds like snake oil to me.
First, before you pay a cent of your money to any of these people, have them show you it working on YOUR equipment first. And have YOUR techs check the equipment before, during, and after the demo for tampering.
It will also help if the pictures are supplied by you, and they never get a copy of the pictures until the very last minute before them start the demo.
If there are any delays and you lose track of your data disk/stick insist on restarting the demo with a new set of pictures.
If there are more delay, start smelling a rat. At the very least ask why are you paying good money for software that is so hard to use.
We are still interested in finding something better then JPEG2000. But at this time JPEG2000 appears to be he best.
Thankyou