Monday, December 19, 2005

Structured Blogging Initiative

http://redherring.com/Article.aspx?a=14902&hed=Semantic+Web%2c+Here+We+Come

The "Structured Blogging Initiative" is an attempt to jump-start the "semantic web," the idea of giving deeper meaning to the Internet advocated by World Wide Web creator Tim Berners-Lee. By incorporating descriptive information into the code of web pages, laypeople will be able to designate their content as a movie review, an event posting, or an item available for sale.

The idea is to spark massive amounts of web pages using these formats so that companies and applications can be formed to make use of the information; for instance, an alternative to eBay that collects listings from blogs rather than requiring sellers to sell within the confines of its marketplace.

"If you've got something to sell, you put that on your own blog," said Bob Wyman, CTO of PubSub, which has spearheaded the initiative. "What we're looking for is a world in which you own your own data."
...
PubSub's main project is a kind of search engine that focuses on the newest information on the Internet, letting users subscribe to keywords they're interested in so they can stay on top of the information.

PubSub hired Marc Canter of Broadband Mechanics, who founded MacroMind, to develop plug-ins for the widely used blogging platforms WordPress, Movable Type, and Drupal.


It seems this is another variation in the age-old question of pre-determined vs freely assigned indexing:
Figuring Out Categories

Though Mr. Wyman blasted the “walled garden” approach of today’s web—where local restaurant reviews, for instance, are replicated on multiple sites but can’t be viewed together—he said he supported Google’s new database project, Google Base.

Google Base has been criticized for trying to collect information in a closed system. However, the free database could provide a way for users and companies to get by without paying for or building a database of their own, said Mr. Wyman.

But how will Google’s categories be reconciled with Structured Blogging’s, or anyone else’s for that matter? What if one user’s movie reviews are on a scale of four stars, and another user’s on a scale of 10?

Mr. Wyman insists that some core categories and templates will emerge. He is working with Google to make sure the “schemas” are aligned.

But while top-down categories undoubtedly make things easier to combine, they are at odds with the emerging bottom-up categorization systems like tagging (user-generated labels created in free association with an object like a web page or a photo).

The interplay between categorization systems is likely to be increasingly important as online content proliferates.

Wednesday, December 14, 2005

Webcams part 2 - for family chats on the net

The most common scenario for using a webcam is with IM. What do Yahoo and Hotmail say about supported webcams?

Yahoo links from their Messenger Webcam page to a promo for Creative webcams ranging from $30 - $150. The features that distinguish them are:
* microphone at $50
* USB 2.0 at $80
* Smart face tracking at $80
* 30 frames/sec at $80
* whether its mounts on a notebook
* auto-pan and tilt
* CCD better than CMOS imaging element

The Super Webcam page at Yahoo says that with basic Webcam, frames refresh only about once a second, and the maximum resolution is 160 x 120. With Super Webcam, frames refresh up to 20 frames a second, and the maximum resolution is 320 x 240.

The Yahoo Messenger "Learn More" page promotes PC-to-PC calling. With a link to a Plantronics .Audio 70 headset - 1 for 26.95, 2 for 41.93.

MySimon has this webcam price/feature listing . Logitech and Creative dominate. They describe the cameras based on megapixels ( 1.3 is common.)

The ConsumerSearch site has this review.

This is a really cool site because it reviews the reviews. They really like the reviews at Consumer Guide, including this listing of webcam reviews..

Consumer Guide is a gold mine. Although we wish models were compared to each other, there are at least savvy write-ups here for current Webcams. The Veo Velocity Connect USB 2.0 and ADS USB Turbo 2.0 are the best Webcams if you have a USB 2.0 port and a broadband connection. The latter includes a nice software bundle. The Creative Labs WebCam Pro EX has a better CCD sensor and good color, as well as an included [headset] microphone; however it's USB 1.1. The review also gives good ratings to the Logitech QuickCam Pro 4000, which comes with a microphone, generous software and both Mac and PC compatibility. The Logitech QuickCam Orbit, which tracks your face when you move, is another well rated Webcam, but the review says it's expensive. The Logitech WebCam is the best cheap model, but isn't great in low light.

"Reviews say the [Logitech] QuickCam Pro 4000 is the best mainstream Webcam. The QuickCam has a 640 x 480-pixel CCD sensor, a digital zoom, an integrated microphone and can shoot 1.3-megapixel still photos. Owners on user-review sites rave about the Logitech Webcam's picture and sound quality. Low light is a big problem for most Webcams, but the Logitech has better light-gathering capability than others. The only major feature it's missing is face-tracking software." But to me, that's one less thing to muck with. The Consumer Guide review says that the interface is the older USB 1.1 standard, which means that the camera will be just barely able to transfer full-motion 30fps video to the PC. It seems that 30fps across the internet just doesn't happen yet, although netmeeting may do it.

An ad here tells me that Walmart sells the Creative Webcam Live! Pro. Image Sensor Type: CMOS, Interface: USB 2.0, 30 frames per second, Video Capture Resolution 640 x 480

" Amazon is becoming an increasingly reliable source for owner-written reviews and ratings. Interestingly, no camera gets unequivocal raves; all seem to have image issues, driver problems or incompatibilities. The Creative WebCam NX Ultra gets better ratings than others; the Creative WebCam NX and WebCam Live do fairly well. The Logitech QuickCam Chat and QuickCam Orbit get more complaints than others."

We could also consider what software comes with a webcam that would be fun to use if we all had the same kind?

More expensive: Logitech QuickCam Pro 4000
Creative WebCam Live Ultra
ADS Technologies Turbo (USB 2.0)
Veo Velocity (USB 2.0)

Less expensive: creative labs webcam live
Logitech QuickCam Chat Webcam with USB 2.0 Output, Microphone & Headset and Software - Win
Logitech Quickcam Communicate Web Cam

Logitech QuickCam Chat $20 at Amazon http://www.amazon.com/gp/product/B00077IGZ2/sr=1-1/qid=1134353523
- one user preferred creative webcam live

Creative WebCam Live - Amazon comments - this camera had a delay of almost a 1/2 second between the audio and the video... In my opinion it would be better just to have audio than to have every single syllable out of synch with the video, which I find to be very distracting.

ADS Technologies Turbo < $50 delivered at http://www.bhphotovideo.com/bnh/controller/home?A=details&amp;Q=&is=REG&O=productlist&kw=ADWCU&cpncode=10-14271597-2&sku=263758&srccode=cii_5784816
That's a good looking supply site for video - B&H Photo

Amazon review comments:

- Can only capture 160x120, 320x240, or 640x480 sizes. You really need 352x288 for videoconferencing.
- The price is good, but the image quality is poor. The images are very dark under indoor light, and if the low-light option is clicked in the driver, then the images are bright but the camera suffers from extreme motion blur that makes it unusable.
+ As far as brightness goes, the video off this webcam is not very bright. But this sacrifice is acceptable since gamma correction usually reduces image quality so just turn on the lights when you use it. Its that simple.
+ the button on the camera neatly triggers a capture routine that pops-up a window with a still ready to be saved to file

The bottom line
It seems maybe that USB 2.0 cameras suck up more CPU (1GHz minimum) and don't do as well in low light conditions. Hmm. Maybe the older ones are better. But even they are subject to flakiness on upload speeds and configuration.

I'm changing my approach to "family sharing" on the internet, to miminize shared headaches: a good headset like the Plantronics, a copy of Netmeeting or Yahoo IM with Voice to share screens, photos and conversation, and a tripod to hook up the digital cameras we already own. You can drag/drop still pictures into the chat. Also, it might be that our current cameras are useable as webcams. NetMeeting seems to be a free download / builtin to Windows..

Shared video can wait til bandwidth and processor power are one more generation along.

Wednesday, December 07, 2005

Webcams and other gadgets

The main medium for using webcams is video IM or video for VoIP. You might also want to use your webcam to record and publish a short video.

CNet 2005-08-15 -
"Logitech's new QuickCam Fusion is designed for that casual conversation between friends or as a Web conference business tool, the company said. Priced at $99.99 in the U.S and available this month in both the U.S. and Europe, the webcam features a wider lens with 78 degrees of visibility and requires Windows 2000 or XP to operate.... Video Effects software maps facial expressions by tracking up to 22 points on the face, around the eyes, eyebrows, and mouth... The software then allows you to pick your own avatar... which then mimics the facial movements and expressions determined by those points. Microsoft said it worked with Logitech to endorse both the webcam and the video effects software for Windows 2000 and XP. The webcam and software are also supported by AOL and Yahoo Instant messenger." That's from the Gadgets Blog at CNet.

Broadband Reports 2005-12-01 -
"Skype has launched the beta version of Skype 2.0, which integrates video-chat functionality. The program searches for a webcam and if present, provides a 4x4 inch video image for chatting (full screen if you've got the hardware). Though the official release will be a while, the Skype Web Store will be selling Logitech "Skype certified" webcams for the software, reports Techworld."

"S
kype will be multiplatform and multi-user and multi firewall (others still can't beat it there)"

"Everybody has these great 6mb download services but they forget that they usually only have 386k up."

Gizmodo 2005-12-01
"The Creative WebCam Instant Skype edition is certified by Skype for use with its video and comes with a personal headset with microphone, software and a standalone mic for conference calling. Also, Skype's Version 2.0 was announced (by eBay), adding the video calling feature as well as a toolbar for Microsoft's Outlook to make things easier. The cost for the camera is $47 and it also includes CMOS sensor that captures video at 352x288 pixels at 30 frames per second."

Chandler: open-source calendar

OSA Foundation President Mitchell Kapor says Chandler, a free calendar software, could follow in the footsteps of Firefox. Kapor tells CNET News.com's Charles Cooper at the When 2.0 conference that the software could be helpful for small work groups, families and informal groups. As of December 2005 it's at version 0.6, so "try it if you're willing to help us fix bugs." [http://news.com.com/1606-2_3-5985814.html]

Google blogs for product communication

Products like Google Talk have their own weblogs. These let the product team tell "us" users what "they're" thinking about and working on. Also a good place to comment on add-ons and exploits. Builds a sense of team and community - great idea!
Google Talkabout
Official Google Blog
Inside Google Desktop
etc.