Yeah its not hard to find nice subjects to shoot here, at least as far as landscapes are considered.
Yeah its not hard to find nice subjects to shoot here, at least as far as landscapes are considered.
The picture looks realy cool...
I did read it, not all of it but this part at the beginning didn't convince me otherwise:Originally Posted by blinddonkey
High dynamic range of luminance (shadows-to-highlights), or exposure.In image processing, computer graphics and photography, high dynamic range imaging (HDRI) is a set of techniques that allows a greater dynamic range of exposures (the range of values between light and dark areas) than normal digital imaging techniques. The intention of HDRI is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows.
You quoted that they require more bpc, ok, but the term high dynamic range doesn't refer to this. It refers to the range of luminosity of the existing channel.
I read it, thanks.
I did learn new things about HDR, and you were right with your statements.
Holy crap, someone on the internet had their mind changed! A sound debate and a historic day for the FM forums!
That said, those links were very interesting to read. Cheers. [thumbup]
Last edited by zortoflaven; 07-07-2008 at 02:07 PM.
Yeah, HDR imaging is The Shiz.
I spoke with the NASA team that analyzes the shuttle launches looking for debris that may have struck the orbiter. The director showed some clips they get from really high speed film. They scan it in at completely uncompressed 10bpc, or 16bpc. Which means they can stop it all the way down and see bolts or fragments of objects entering into the engines when they are fired, or they can lighten it up to see objects that may be in dark shadows in the same shots.
That's why they use these HDR formats for film, because you can get detail back that you lose with conventional digital formats. In HDR white isn't necessarily white, there is a whole range of information in overblown parts. Same as shadows.
He also had a clip of the shuttle hitting a bird on take off, and the bird started cooking once it fell past the engine.
You can also use these HDR images as sky-dome textures in 3D renderings to light the scene and match the lighting to existing conditions. Because they contain so much more information than a conventional RGB image.
But, that's a little off topic... or a lot.
OK, let me see if I can get this right then. The images we see on, say, wiki for example are just tone-mapped as they are "static", but in a true HDR image we can do "something" to explore parts of the image at a different range of light intensities? This allows us to see information that is in the picture, but hidden by the light (or lack of)?
I may have minced my words terribly there, but am I on the right track?
Yeah, and it also gives you an excuse to buy larger memory cards/hard drives... because damn, the files are huge.
I would imagine they have to bee to store all that "hidden" information!
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