It does not matter how noisy a signal is, if the information is there it can be retrieved. In Electron Microscopy the images are often terribly noisy. For ordered structures Fourier transforms, rotational symmetry, or a combination of methods is useful. I have programs to do things like that and if I can find a decent electron micrograph of a virus I'll try to prepare some images that illustrate the cleaning of an image. Image processing can be done in real time on an optical bench, but its more difficult.
Don Don Williams ___________ Dr E D F Williams http://personal.inet.fi/cool/don.williams Author's Web Site and Photo Gallery Updated: March 30, 2002 ----- Original Message ----- From: "Rob Studdert" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, January 08, 2003 4:35 PM Subject: Re: Pentax DSLR: e-mail from Pentax USA > On 8 Jan 2003 at 8:16, [EMAIL PROTECTED] wrote: > > > No, this is what DSPs are all about: extracting signal from noise. It's been > > done for years all over the place. > > DSPs are great for applying dark noise offset, colour correction, matrix > transforms, sharpening, contrast control and jpg compression to digital data > sets derived from images sensors however you can't make a silk purse out of a > sows ear. > > If it were all that simple we could use a 4x4 array of photodiodes coupled with > a DSP to rival 10x8" film? > > Rob Studdert > HURSTVILLE AUSTRALIA > Tel +61-2-9554-4110 > UTC(GMT) +10 Hours > [EMAIL PROTECTED] > http://members.ozemail.com.au/~distudio/publications.html >
