Re: High speed camera vs. HD video

"AKA gray asphalt" <benvhoff@[EMAIL PROTECTED]
> wrote in message 
news:BD9Oj.88207$497.13331@[EMAIL PROTECTED]
>
> "Burgerman" <burgerman@[EMAIL PROTECTED]
> wrote in message 
> news:2W5Oj.92306$5i5.1809@[EMAIL PROTECTED]
>>
>>>
>>> You need to read up on that. The process does a complex
>>> interpolation of the pizels around the newly created pixel.
>>> It is really quite sophisticated.
>>
>> No. Interpolation increases the number of pixels. It increases the
image 
>> sixe. It CANNOT add in information that wasnt there to start with.
>>
>> Take a 4 pixel image. Make it into a 1 megapixel image... Err you can! 
>> But it looks like a fuzzy 4 pixel image...
>
> You just don't know what you are talking about.

Very wrong Im afraid...

> If you take a 4 pixel image and double it, it will
> look quite different than a Photoshop image which
> has been interpolated. Both are 8x8 pixels which
> quadruples the pixels but the images look quite
> different.

Yes but BOTH have data introduced that isnt really there...

There is a lot of difference between
> enlarging a 4 pixel image and a regular photo size,
> even 640 x 480 pixels. To get a 4x6 print at 300
> ppi you'd have to multiply a 4 pixel image by
> 8548590394589034 %.


It doesent matter what maths you use you cannot introduce real information

into a low number of pixels and make a "bigger" image. The data is simply 
not available.



> I know you're pulling my chain. There isn't anyone
> on the internet that doesn't know that Photohop does
> a better job of enlarging images than just doubling
> pixels. : -)


It just averages the data - smoothes it across the pixels - it makes a 
larger print possible without seeing pixelation. It does not and cannot 
guess what real information SHOULD be present. So no amount of enlarging 
improves the original HD low res image other than to allow bigger but
still 
crappy images lacking in detail and information..