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SNEAK PEEK: Position Search Within Videos
http://www.chessvideos.tv/forum/viewtopic.php?f=7&t=5545
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Author:  admin [ Tue Jun 30, 2009 2:54 am ]
Post subject:  SNEAK PEEK: Position Search Within Videos

So there always has been the ever present problem of searching for the videos you are looking for, especially now that we have over 2,000 videos posted on this site. While brainstorming, Josh and I came up with the most ambitious idea we have ever had... What if we created an system that indexed the positions in each video so you could search them? Well after months of work, we are proud to announce the alpha launch of Position Search within our video library.

Our system goes through a video frame by frame and automatically figures out the position on the screen. We then add this to our video position database. For our alpha launch, we have focused on the premium videos and master hangout sections, though we plan to continue to index videos and eventually get every video posted on this site indexed. As of right now, we have indexed over 800 videos and have found a total of 118,000 distinct positions. For this alpha launch, we have focused mainly on openings, but we will roll out features for the middlegame and endgame in due time.

How do I use it?

First, here is the url: Chess Video Search w/Position Search

You will notice the familiar chess video search interface, but with a new Positions section. In this section you can type the moves of any ECO opening (case sensitive), and your search results will automatically be filtered to only include videos with that opening. Take a look at this example search:

Image

Features:
1) The results are sorted by the total time the position(s) are in the video
2) You can see the timestamps when the positions are on screen. The timestamps are approximate and may not always be right, and are for each position in the opening... so in the above you are seeing timestamps for the position after: d4, d5, c4, and dxc4, which are of course 4 different positions and 4 different timestamps.
3) Any other searches or filters will work alongside your positions search, so if you want to look for videos starting with d4 by a certain user (username:<user> in the search box) or restrict to videos with a certain length, that will work with your position search.
4) You can also search by FEN Position if you would like. Just put up to 5 FEN positions in the search box (just the first part, for example the initial position "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1", you would just enter "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR"), and only positions containing all those FENs will be returned.

Final words:
This system is new and ambitious. It isn't going to be perfect, it will occasionally return bad results (positions that weren't actually in the video, miss videos with a certain position, etc). However we will constantly strive to increase the accuracy of the system, and as it evolves it will be better and better. We also have some really ingenious ways to search for middlegame and endgame positions, and we will roll that out as soon as we can fully develop and test them.

Please post questions or comments in this thread.

Disclaimer: This feature is going to become premium only after the "sneak peek" period ends, which will be in 1-2 weeks. I apologize if you have philosophical problems with this, if you have complaints with this feel free to email me at admin@chessvideos.tv, but I will delete them if you post in this thread.

Author:  bartcaissa [ Tue Jun 30, 2009 3:21 am ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

Wow, that is a great idea. I love what you do to the site. It keeps getting better and better.
I think this is really useful. Keep on the good work!

Author:  kamus [ Tue Jun 30, 2009 6:27 am ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

That's pretty awesome- and here, I thought you guys were just resting on your laurels!

Author:  Wildman [ Tue Jun 30, 2009 11:09 am ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

Wow... Now *THAT* is an ambitious feature! I don't think anyone else in the universe has that one... :D How did you do it? Was it an OCR-type routine, only it was looking for chess boards and pieces instead of characters? I'm *VERY* impressed!

Oh... And don't let anyone get on your case for making it a premium feature: (1) You don't charge very much for a premium membership. Even starving students and teenagers will pay twice (or more) your monthly membership fee to go see an occasional movie in a theater. (2) Having some of the cool features be premium is an incentive for people to buy memberships to help support the site. (3) The non-premium part of CVTV by itself is the coolest non-play chess site on the internet.

Keep up the good work!

L8erz...
=wild=

Author:  Wildman [ Tue Jun 30, 2009 11:11 am ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

Oh, yeah... One possible improvement would be to modify the diagram generator (or access something like it on the search page) to kick out a FEN, so people can generate one easily for searching without a lot of typing.

L8erz...
=wild=

Author:  wetpaste [ Tue Jun 30, 2009 12:33 pm ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

Wow, thats pretty damn innovative. This site is really starting to mature. I've never heard of anything like that before. I'm impressed!

EDIT: I also want to say this is going to be very useful, there were some curtains videos I remember seeing that I wanted to find again but I have no idea which one it was but I remember it was a berserk attack type of opening.

Author:  admin [ Tue Jun 30, 2009 10:30 pm ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

Quote:
Wow... Now *THAT* is an ambitious feature! I don't think anyone else in the universe has that one... How did you do it? Was it an OCR-type routine, only it was looking for chess boards and pieces instead of characters? I'm *VERY* impressed!


It is very similar to OCR, in that it looks through an image to find shapes it recognizes, and then tries to put them together to form a chess board.

Quote:
Oh, yeah... One possible improvement would be to modify the diagram generator (or access something like it on the search page) to kick out a FEN, so people can generate one easily for searching without a lot of typing.


Once it gets through some basic testing, it will be integrated with both the opening database and diagram generator to help make searching easier.

Author:  JoshSpecht [ Wed Jul 01, 2009 8:03 am ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

admin has been working REALLY hard on this. So big thanks to him!

Author:  JWhis [ Wed Jul 01, 2009 3:26 pm ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

This is Nobel Prize winning stuff, imo. :D Except I hardly ever search for videos cause I watch EVERYTHING the day it comes out

Author:  Initiative [ Wed Jul 01, 2009 9:05 pm ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

That's an amazing idea!

Author:  whiskeytown [ Fri Jul 03, 2009 10:20 pm ]
Post subject:  Re: SNEAK PEEK: Position Search Within Videos

you know, it seems every time I make a video, esp. of a live game, I end up posting the .pgn and a live replay of it anyways - might not hurt to make this a feature that can be uploaded when we submit the initial video - just a FYI - would certainly improve the accuracy of the results -

RB

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