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User: Amousha

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  1. What your looking for is Extended Depth Imaging. on Correcting Lens Aberrations in Digital Photography? · · Score: 1

    Extended Depth Imaging is definately whats called for here. Basically, you stick a filter on the front of the lens that is comprised of mostly transparent grid lines. Then you right software that searches for the grid lines in the image, and maps the source image using the distorted grid lines *contained* within each picture. High-end systems generally have a piece of hardware stuck on the camera that
    does it for you prior to dumping to the storage unit. This technique is used extensively in robotics to "extend the plane of depth" e.g. if you are using a stereoscopic matching algorithm to reconstruct 3D structures from stereopictures, you can SIGNIFICANTLY improve the 3d reconstruction by sticking aforementioned filter on the front of a lense, and digitally preprocessing to remove distortions introduced by lens aberrations. It shouldn't be too difficult to code up a stupid simple algorithm to sample a picture according to detect said distorted grid in each picture, and then remap the distorted picture into a corrected image.

    BTW - if you are serious about digital photography, another technique thats been pioneered recently is using a range finder (associated with the CCD) to store the z depths of each pixel in the image; the benefit being that if you are attempting to do any collage work, you can mask out area of the image based on depth (ergo saying: "Please provide me with all pixels 6 feet or less away from the camera position")... I'm currently researching techniques (- film deposition) for correcting for chromatic lens aberrations, so if anyone knows a good way, let me know :P

  2. Re:Here's the rub on Prime Numbers Not So Random? · · Score: 1

    Not quite true.

    You're posits are true, just not the consequence.

    What you might end up doing, upon examining the statistical distribution of primes (and upon detecting a pattern), is come up with a new branch of mathematics (a number system) in which the formula for prime numbers might even be a constant (a property of the space).

    omard-out

  3. Re: Shortened Telomeres on The Lazarus Zoo: Resurrecting Extinct Species · · Score: 1

    they have.
    cells from the intestine are one of the prime area for harvesting. Also less nuclear damage...
    omard-out

  4. Re:Neat on It's Official: Black Holes Have Lots Of Mass · · Score: 1

    the background radiation (4 degress kelvin) is also not uniform... they recently discovered an area of space which was less than 4 degrees kelvin, which remains so because of a "solar" wind (actually cold gas) pushing against the influx of new material/heat.... very interesting.

  5. Re:Mathematics != Real World on Exactly One Kilogram Of Silicon · · Score: 1

    I wonder though if how they compensate for variations in gravitational force between both scales... Sorry, I can't respect the current method unless they do that... Maybe there's some novel way waiting to be discovered for mass comparisons that will be unaffected by gravity (effectively)..