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Archive for category High Dynamic Range
Gamers rejoice! Today there were some really great updates in the XBOX 360 queue. The most interesting one is the update for Project Gotham Racing 3 – one of the launch titles of the 360. You finally can export the pictures you took in “Photo Mode” to your computer. Just select the picture and send it to your “Your Photos”-Webpage and grab them from there.
I straight went onto the track with the Sagaris to take some test pictures:
I just can say: WOW! That’s what I was looking for when I used the “Photo Mode” over half a year ago for the first time…Oh…I forgot to mention that they are also doing a competition…if you want to take part…here’s the info you need.
Source 1: http://projectgothamracing3.com/photos/PhotoGallery
Source 2: http://www.bizarreonline.net/forum/viewtopic.php?p=216755
It seems that a company called Geomerics has developed an algorithm that allows real time radiosity lighting in fairly complex environments. They support nearly all the things you would expect, like soft shadowing, infinite light bounces, colour bleeding:
If you don’t know what radiosity is:
Since you of course know how radiosity works you can imagine that it’s dead slow. And getting it up to real time is the important thing about the new algorithm.
They demonstrate their technology in a short movie:
Our technique also supports real-time area light sources, smooth soft-edged indirect shadows, projected lighting, spot lights, colour bleeding and texture-based lighting effects such as normal and bump mapping.”
We had a great campfire and I played again with my Powershot… here is the High Dynamic Range campfire:
UPDATE: I added the full resolution versions of the HDR pictures.
During FIWAK I had the chance to play a bit with a Canon EOS 20D. It’s proper DSLR and you can do many great things with it. All the pictures below where done without a tripod. As you can see there are a few ghost pictures but less than I expected in that mode. Nevertheless my Canon PowerShot A400 is better for panoramic views – the EOS is way to big and heavy, you surely need a tripod to do proper panoramic views whereas you can do quite good panoramic views with the A400 without a tripod.
After last years FIWAK, FeM is back in the forest. This year with even more hardware, even more people and even more tents.
The first lecture starts in just a few minutes so stay tuned for more news on the FIWAK 06.
Source: FeM FIWAK Homepage
BrightSide is the name of the company that announced their High Dynamic Range display recently.
“BrightSide introduces the DR37-P, a pectacular breakthrough in display technology that uses an array of LED backlights to deliver 10 times the brightness and 100 times the contrast of existing televisions and computer monitors. BrightSide’s Extreme Dynamic Range displays deliver more vibrant images and allow you to see your data in
- Extreme Dynamic Range
- Over 3000 cd/m2 Brightness
- Contrast Ratio > 200,000:1
- High Definition 1920×1080
- 37” Screen
- 16 bits per color
- IMLED – Individually Modulated Array of LED backlights
There are some movies available where you can get an impression what HDR really means. It’s a bit heavy…”less than 72 kg” says the spec. But it looks cooool:
I am playing with my camera and that’s what resulted today…
For the next picture my apologies…I just don’t have a tripod…
I don’t own a 600 Euro digital camera. Mine was cheap and does the job well so far. And now I’ve found something more to play with. I like to do panoramic views, as you might have mentioned before. But the technique I am now discovering is far more interesting. It’s called High Dynamic Range imaging.
Here’s an excerpt of the wikipedia article on that subject:
Since it’s night here at the moment I could only experiment in the dark, where my camera creates, beside dark pictures, very much picture noise.
So, what to do, you may ask. Well grab a camera where you can control at least the exposure time. Than take at least 2 (the more the better) pictures with different exposure times. I started with 3 pictures per HDR image. As you can see above:
When you have those pictures you need a software to combine them to an HDR image. There are many sites that can provide such tools, I recommend hdrsoft.com. They provide a tool called “Photomatix” which is specialized on HDR imaging. If you have a Photoshop CS2 available, well, that will do the job as well. Just go to the “File->Automate->Create HDR” dialog.
If you downloaded the tools, throw the pictures inside and let the magic happen. You get a 16 or 32 Bit per pixel image. You can control the exposure and saturation, the white and the black levels and so on. To save the picture as a standard-JPG like I did, you have to do some Tone-Mapping. Photomatix can do that as well.
Expect more on that subject here tomorrow. Then with some pictures of the sunny nature…well if there is sun tomorrow…Till than: Enjoy the HDR images I’ve got so far:
First the 3 source pictures:
And then the HDRI:
First the 3 source pictures:
And then the HDRI:
Source 1: http://en.wikipedia.org/wiki/High_dynamic_range_imaging
Source 2: http://www.hdrsoft.com