Ranking of 6000+ Indian blogs from IndiBlogger.in

BinaryDay, one of the most active bloggers on the IndiBlogger Forum, has compiled some interesting stats using the blogs from IndiBlogger.in.

Here are the rankings based on Google PageRank:

Total Blogs studied : 6020
Maximum Pagerank : 6
Minimum Pagerank : 0

Pagerank # of blogs % of total blogs
PR 0 2749 46%
PR 1 731 12%
PR 2 1069 18%
PR 3 941 16%
PR 4 428 7%
PR 5 94 2%
PR 6 8 0%

428 blogs with PR4 – now that’s a pleasant surprise! Although blogger still seems to be the preferred choice over wordpress, with 3976 on blogger and only 741 on wordpress.

Read the complete report here, where you can see the list of PR 8 blogs and other interesting information.

Binardyday has compiled rankings based on Alexa here. Frankly, I’m not a big fan of either PR or Alexa, so I can’t wait for him to complete his analysis which is going to include backlinks, technorati rank, number of social bookmarks and feedburner subscribers.

Cross posted on the IndiBlogger blog.

Get online videos onto your iPod

Check out Flvix, a new online service that lets you convert any video from Google Video or YouTube into the .MP4 format – so you can watch it on your iPod.

[ Update: Jan 2nd, 2009 ] – Google video and YouTube are the same now, and flvix has become a porno site. Things change.

To convert videos as described above, try out Vixy.net. If it’s turned adult by the time you click on this link, good luck!

Still looking for that perfect HDR

I’ve been trying my hand at High Dynamic Range (HDR) images ever since I saw this slightly over the top one at Flickr. After many, many messed up attempts I’ve finally managed to get a few decent ones at Vellore last weekend:



If you aren’t familiar with HDR photography, you probably think these images were run through a hundred photoshop filters. Actually, HDRs are a result of combining three separate photographs of the same scene, but with different exposures. When the three images are combined, you get all the highlights and shadows in great detail. Click here to see the three original exposures of the Vellore fort, followed by the final HDR.

The trick with getting decent results is knowing how far to push the final output HDR. If you go too far, it would end up looking like this. I liked this shot on Flickr, think he/she got it just right. This night shot is nice as well. For some tutorials on taking HDRs, go here, here, here and here.

576 Megapixels?

No, it’s not a camera you use to make blowups that can be seen by passing aliens. According to this article on clarkvision.com, it’s the resolution of the human eye when compared to a digital camera.

The eye is not a single frame snapshot camera. It is more like a video stream. The eye moves rapidly in small angular amounts and continually updates the image in one’s brain to “paint” the detail. We also have two eyes, and our brains combine the signals to increase the resolution further. We also typically move our eyes around the scene to gather more information. Because of these factors, the eye plus brain assembles a higher resolution image than possible with the number of photoreceptors in the retina. So the megapixel equivalent numbers below refer to the spatial detail in an image that would be required to show what the human eye could see when you view a scene.

Based on the above data for the resolution of the human eye, let’s try a “small” example first. Consider a view in front of you that is 90 degrees by 90 degrees, like looking through an open window at a scene. The number of pixels would be
90 degrees * 60 arc-minutes/degree * 1/0.3 * 90 * 60 * 1/0.3 = 324,000,000 pixels (324 megapixels).
At any one moment, you actually do not perceive that many pixels, but your eye moves around the scene to see all the detail you want. But the human eye really sees a larger field of view, close to 180 degrees. Let’s be conservative and use 120 degrees for the field of view. Then we would see
120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels.
The full angle of human vision would require even more megapixels. This kind of image detail requires A large format camera to record.