Archeology: AberMUD, BCPL, ec.

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Re: [TUHS] Archeology: AberMUD,...

qed-archive - please reclone

Richard Salz

30 Jan 2019 30 Jan '19

7:51 p.m.

Some folks are trying to figure out how to get AberMud source online and working; see https://twitter.com/larsbrinkhoff/status/1056823314272960512 Sample code at https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/tex…

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Alec Muffett

31 Jan 31 Jan

7:15 a.m.

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Lars Brinkhoff

7:28 a.m.

Alec Muffett wrote:

...

Has anyone ever attempted to OCR a video, perhaps by breaking into frames and then aggregating the results, using multiple frames to correct each other?

I had in mind to just manually pick a good frame for each page and type it in by hand. I have tried to OCR program listings before, with rather poor results.

Clem Cole

2:42 p.m.

I'm not sure if the old DEC CRL tech reports are still around. At one time before the Compaq-tion, some folks at CRL and the folks at Boston Public Library and WGBH were working with video and trying to extract all sorts of text from it. I do not remember how successful they were, but there might be some hints in their tech reports. I'll ask around and see if I can turn anything up. Part of the problem I have is I that don't remember who was doing that work, but some of my friends might. Clem ᐧ On Thu, Jan 31, 2019 at 2:16 AM Alec Muffett <alec.muffett(a)gmail.com> wrote:

...

Has anyone ever attempted to OCR a video, perhaps by breaking into frames and then aggregating the results, using multiple frames to correct each other? On Wed, 30 Jan 2019, 19:51 Richard Salz <rich.salz(a)gmail.com wrote: > Some folks are trying to figure out how to get AberMud source online and > working; see https://twitter.com/larsbrinkhoff/status/1056823314272960512 > > Sample code at > https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/tex… > > > >

Lawrence Stewart

7:34 p.m.

I was at CRL from 1989 to 1994. I sent an inquiry to our informal mailing list. We had written an audio server along the lines of the X server (http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-8.pdf) and Tom Levergood wrote an application called Store24 to keep a rolling 24 history of WBUR (local NPR station). We thought about using speech recognition to build a searchable index for it. The next idea was to do the same thing for Video, perhaps using the closed captioning feed to develop the index. Dave Wecker (now at Microsoft Research) reports working on extracting data from NPR news streams and it would find the appropriate audio or video clip. He’s not sure he published that. Jim Gettys cites http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-99-2.pdf (Indexing Multimedia for the Internet) and notes that all the DEC techreports are hidden away at http://www.hpl.hp.com/techreports/ <http://www.hpl.hp.com/techreports/>. Choose “Browse by year” and select Compaq/DEC -Larry

...

On 2019, Jan 31, at 9:42 AM, Clem Cole <clemc(a)ccc.com> wrote: I'm not sure if the old DEC CRL tech reports are still around. At one time before the Compaq-tion, some folks at CRL and the folks at Boston Public Library and WGBH were working with video and trying to extract all sorts of text from it. I do not remember how successful they were, but there might be some hints in their tech reports. I'll ask around and see if I can turn anything up. Part of the problem I have is I that don't remember who was doing that work, but some of my friends might. Clem ᐧ On Thu, Jan 31, 2019 at 2:16 AM Alec Muffett <alec.muffett(a)gmail.com <mailto:alec.muffett@gmail.com>> wrote: Has anyone ever attempted to OCR a video, perhaps by breaking into frames and then aggregating the results, using multiple frames to correct each other? On Wed, 30 Jan 2019, 19:51 Richard Salz <rich.salz(a)gmail.com <mailto:rich.salz@gmail.com> wrote: Some folks are trying to figure out how to get AberMud source online and working; see https://twitter.com/larsbrinkhoff/status/1056823314272960512 <https://twitter.com/larsbrinkhoff/status/1056823314272960512> Sample code at https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/tex… <https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/text/timelock.b>

Lawrence Stewart

7:45 p.m.

A followup from TV Raman, now at Google:

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We also did an intern project -- Tom's intern who became my intern after Tom left (Arjen De Vries) where we did: 1. Converted the caption stream into an sgml document indexed by time -- so the caption stream came down in dribs and drabs of the form "turn background yellow, foreground white, place this text"... that turned into the SGML document, with each element tagged with time. 2. We then indexed that collection of SGML documents -- the content stream was Tom's ring-buffer of the CNN live feed (6 hours was what we stored from memory) 3. We then built a simple-minded search engine over the SGML documents, used the CRL reco engine for getting user queries -- you could also just type the query at a search box; did the search over the caption-doc-index, found the time-stamp and played the video. Arjen may have published some of this as his final year Masters project out of the University Of Twente -- likely summer 1995. -- Id: kg:/m/0285kf1

I searched for Arjen De Vries and found https://pdfs.semanticscholar.org/fb10/b792fb209e0d347cd14430fbb446c1b178f3.… “Radio and Television Information Filtering through Speech Recognition” which in turn cites his Master’s thesis from 1995.

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On 2019, Jan 31, at 2:34 PM, Lawrence Stewart <stewart(a)serissa.com> wrote: I was at CRL from 1989 to 1994. I sent an inquiry to our informal mailing list. We had written an audio server along the lines of the X server (http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-8.pdf <http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-93-8.pdf>) and Tom Levergood wrote an application called Store24 to keep a rolling 24 history of WBUR (local NPR station). We thought about using speech recognition to build a searchable index for it. The next idea was to do the same thing for Video, perhaps using the closed captioning feed to develop the index. Dave Wecker (now at Microsoft Research) reports working on extracting data from NPR news streams and it would find the appropriate audio or video clip. He’s not sure he published that. Jim Gettys cites http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-99-2.pdf <http://www.hpl.hp.com/techreports/Compaq-DEC/CRL-99-2.pdf> (Indexing Multimedia for the Internet) and notes that all the DEC techreports are hidden away at http://www.hpl.hp.com/techreports/ <http://www.hpl.hp.com/techreports/>. Choose “Browse by year” and select Compaq/DEC -Larry

On 2019, Jan 31, at 9:42 AM, Clem Cole <clemc(a)ccc.com <mailto:clemc@ccc.com>> wrote: I'm not sure if the old DEC CRL tech reports are still around. At one time before the Compaq-tion, some folks at CRL and the folks at Boston Public Library and WGBH were working with video and trying to extract all sorts of text from it. I do not remember how successful they were, but there might be some hints in their tech reports. I'll ask around and see if I can turn anything up. Part of the problem I have is I that don't remember who was doing that work, but some of my friends might. Clem ᐧ On Thu, Jan 31, 2019 at 2:16 AM Alec Muffett <alec.muffett(a)gmail.com <mailto:alec.muffett@gmail.com>> wrote: Has anyone ever attempted to OCR a video, perhaps by breaking into frames and then aggregating the results, using multiple frames to correct each other? On Wed, 30 Jan 2019, 19:51 Richard Salz <rich.salz(a)gmail.com <mailto:rich.salz@gmail.com> wrote: Some folks are trying to figure out how to get AberMud source online and working; see https://twitter.com/larsbrinkhoff/status/1056823314272960512 <https://twitter.com/larsbrinkhoff/status/1056823314272960512> Sample code at https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/tex… <https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/text/timelock.b>

Jason Stevens

1 Feb 1 Feb

5:08 a.m.

Ffmpeg can extract images from a video file. I used imagemagik to do a CGA palettized version of a video and ffmpeg to stitch it all back together. I can get the flags.. Get Outlook for Android On Thu, Jan 31, 2019 at 3:16 PM +0800, "Alec Muffett" <alec.muffett(a)gmail.com> wrote: Has anyone ever attempted to OCR a video, perhaps by breaking into frames and then aggregating the results, using multiple frames to correct each other? On Wed, 30 Jan 2019, 19:51 Richard Salz <rich.salz(a)gmail.com wrote: Some folks are trying to figure out how to get AberMud source online and working; see https://twitter.com/larsbrinkhoff/status/1056823314272960512 Sample code at https://raw.githubusercontent.com/larsbrinkhoff/abermud/master/abermud1/tex…

Steve Nickolas

8:09 a.m.

On Fri, 1 Feb 2019, Jason Stevens wrote:

...

Ffmpeg can extract images from a video file. I used imagemagik to do a CGA palettized version of a video and ffmpeg to stitch it all back together. I can get the flags..

I can't remember it all, but I want to say you start with "ffmpeg -i filename.mp4 flnm%04d.png" I usually use Avisynth on Windows together with ffmpeg to do the opposite, because it has ImageSource(), but I suppose ffmpeg can do it by itself too. -uso.

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Alec Muffett
Clem Cole
Jason Stevens
Lars Brinkhoff
Lawrence Stewart
Richard Salz
Steve Nickolas