http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=11834&item=3863465483&rd=1&ssPageName=WDVW
microfilm scanner. anyone in georgia?
microfilm scanner. anyone in georgia?
McCulloch IPL's for download and free
- Thread starter ozflea
- Start date
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jpgs for greyscale/color -- gifs/pngs for BW linework
size does make a difference ...
pngs and gifs are lossless formats and compress "1-bit" e.g. either on/off, black/white etc. very efficiently. png format has several compression methods, but all are lossless, and most good png compressors will try 3 or 4 methods and choose the best one..
jpgs are probably necessary for anything with a greyscale photo ("8-bit"), or a color (24-bit) where detail in the mid-ranges of the greyscale or color photographs contains important information. If a page includes a photograph (greyscale or color) and text, you will have to choose between a jpg with "muddy" but *readable text, and a clean photograph, or a gif/png producing clean text and linework, but the photograph will loose all its midtones. (tones 0-50% are all white, tones 51% to 100% are solid black, depending on threshold.)
Most linework and text in expanded parts pages will be 1-bit, so gif or png should be at peak efficiency for them. For owner/service manuals, or other which include pictures where midtones are important, a jpg scan at 72 to 150 dpi , with hard compression (80% compression produces file = 20% of raw data size, 80% quality produces file = 80% raw data size - you'll have to hack your scanner/photo editor to see which way they designed their software) should work fine for internet sharing. For local printing you might go to 300 dpi or more.
The initial tendency in any archive operation will be to try to preserve too much "information." Work hard at cutting down on file size. Trim your margins down tight as you can. As long as your readers can *barely make out what they need, they will be just as immensely thankful and you will save your harddisk costs and bandwidth.
size does make a difference ...
pngs and gifs are lossless formats and compress "1-bit" e.g. either on/off, black/white etc. very efficiently. png format has several compression methods, but all are lossless, and most good png compressors will try 3 or 4 methods and choose the best one..
jpgs are probably necessary for anything with a greyscale photo ("8-bit"), or a color (24-bit) where detail in the mid-ranges of the greyscale or color photographs contains important information. If a page includes a photograph (greyscale or color) and text, you will have to choose between a jpg with "muddy" but *readable text, and a clean photograph, or a gif/png producing clean text and linework, but the photograph will loose all its midtones. (tones 0-50% are all white, tones 51% to 100% are solid black, depending on threshold.)
Most linework and text in expanded parts pages will be 1-bit, so gif or png should be at peak efficiency for them. For owner/service manuals, or other which include pictures where midtones are important, a jpg scan at 72 to 150 dpi , with hard compression (80% compression produces file = 20% of raw data size, 80% quality produces file = 80% raw data size - you'll have to hack your scanner/photo editor to see which way they designed their software) should work fine for internet sharing. For local printing you might go to 300 dpi or more.
The initial tendency in any archive operation will be to try to preserve too much "information." Work hard at cutting down on file size. Trim your margins down tight as you can. As long as your readers can *barely make out what they need, they will be just as immensely thankful and you will save your harddisk costs and bandwidth.
ozflea
Good ol' BP Zoom 25-1
Well fellas heres a tip at saving images in high definition but with a reasonable file size.
I use Paint shop pro to do my image processing.
1. Scan your image and save as a bitmap to your doc's
2. Reopen the image compress 50% and resave you may have to repeat this step again to get the file size down to below 20-30kb's, which is better for sending via emails or web page presentation.
Another way of putting together spare part books is in html and prent it as a web page, this i have done quite a few times when i translated books from French to English, making a replia of the books page, the last book i did contained 690 pages and i still cannot read the language of the french.
http://www.users.bigpond.net.au/ozflea/The_Book_index1.html
Have a look at the result it turned out pretty good i feel.
Bob Cornwell............Australia.
I use Paint shop pro to do my image processing.
1. Scan your image and save as a bitmap to your doc's
2. Reopen the image compress 50% and resave you may have to repeat this step again to get the file size down to below 20-30kb's, which is better for sending via emails or web page presentation.
Another way of putting together spare part books is in html and prent it as a web page, this i have done quite a few times when i translated books from French to English, making a replia of the books page, the last book i did contained 690 pages and i still cannot read the language of the french.
http://www.users.bigpond.net.au/ozflea/The_Book_index1.html
Have a look at the result it turned out pretty good i feel.
Bob Cornwell............Australia.
Mike Acres
ArboristSite Operative
Look at the Parts List for a Homelite model 17 in my web site.
This was scanned as a bitmap then cleaned up a bit and saves as png then assembled using Powerpoint and then converted to adobe.
I am trying to achieve a version that can be printed out by anyone as an 8-1/2 X 11 page nice and clear.
It is quite time consuming and is going to eat up a hell of a lot of storage on the file server.
This was scanned as a bitmap then cleaned up a bit and saves as png then assembled using Powerpoint and then converted to adobe.
I am trying to achieve a version that can be printed out by anyone as an 8-1/2 X 11 page nice and clear.
It is quite time consuming and is going to eat up a hell of a lot of storage on the file server.
Lewis Brander
Addicted to ArboristSite
Storing files and server space:
Hi to everyone. I'm sure glad you understand this stuff. It's all GREEK to me. You might as well be talking about Quantum Physics. Converting all these files to different formats would be an education unto itself. I have patience but not that much. Take care and to all a very Happy New Year. Lewis.
Hi to everyone. I'm sure glad you understand this stuff. It's all GREEK to me. You might as well be talking about Quantum Physics. Converting all these files to different formats would be an education unto itself. I have patience but not that much. Take care and to all a very Happy New Year. Lewis.
Al Smith
Addicted to ArboristSite
Nice file
Nice job Mike.I can scan 1 page at a time,on say for instance Stihl,and save them to a file,on the computer.I have only done the 028,and 042/048 .It takes about 1 hr,per model but then I can send them out,in e-mail form,4 to 6 pages at a time.
Nice job Mike.I can scan 1 page at a time,on say for instance Stihl,and save them to a file,on the computer.I have only done the 028,and 042/048 .It takes about 1 hr,per model but then I can send them out,in e-mail form,4 to 6 pages at a time.
Mike Acres
ArboristSite Operative
Thanks Al
If you send them in png format I can assemble them from there. I have ADSL high speed internet so don't care about the time for imcoming mail if the file is large but I think the mailbox explodes at 1 meg
If you send them in png format I can assemble them from there. I have ADSL high speed internet so don't care about the time for imcoming mail if the file is large but I think the mailbox explodes at 1 meg
Mike: I have a spare sparc that can pull manual service duty, I need to config a database to returm model and description for part numbers, so people can look up ebay parts...if there's rackspace and a ip for it, i'll send it wherever when it's ready.
Mike Acres
ArboristSite Operative
We are in this together Al. I have to rely on the tutoring of our son Graham to get me through. I started out scanning in gif and then spending time cleaning up the garbage that ended up in with the detail. I would rather be on the workbench tinkering with a saw when I have a hour or two. I have mountains of detail that can be used in the web site so I work away at it a little bit here and a little bit there.
Happy newyear to all.
Mike
Happy newyear to all.
Mike
ozflea
Good ol' BP Zoom 25-1
Microfiche cards are like slides that you take with your camera but without the border which is in plastic or cardboard and to scan then using your scanner would mean that you would need a scanner that has a light in the top hood as slides are illuminated from both sides during the scanning process, the next thing is most microfiche cards may be in too large a physical size to be held by the holder that normally holds your slides or negatives, but it would be worth trying, the omly thing i have found from experiance is the slide or negative may not scan real crisp.
A few years ago i scanned all my Vietnam memories off slides into my photo program and although it did a great job some where a bit out of focus due to the slides warping or deforming into a convex shape.
Anyway have a try if you have a slide copier your results may turn out better.
Bob Cornwell........Ozflea
A few years ago i scanned all my Vietnam memories off slides into my photo program and although it did a great job some where a bit out of focus due to the slides warping or deforming into a convex shape.
Anyway have a try if you have a slide copier your results may turn out better.
Bob Cornwell........Ozflea
i'll say this again incase people haven't been listening: there is a microfilm/fiche scanner right here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=3863465483&ssPageName=STRK:MEWA:IT
this will scan microfiche, and properly for what i gather. the next one up has a printer attatched, and is a thousand dollars.
this will scan microfiche, and properly for what i gather. the next one up has a printer attatched, and is a thousand dollars.
ozflea
Good ol' BP Zoom 25-1
A second look at the scanner in a positive light
It's not that we ignoring the link that you have placed in the message, but once you have used this scanner how do you transfer the info to your computer and in what format would you save it. then would the file size verses image quality be OK ?
Could the info be scanned into PDF Format for future downloading from a host server or site ?
Maybe the easiest way is to scan the pages with your normal scanner save them as tiff files and burn them to CD that way we could obtain high quality images of the pages for future processing.
Gee this is turning out bigger than the movie Ben Hur.
But i hope this helps.
Bob Cornwell..........ozflea
It's not that we ignoring the link that you have placed in the message, but once you have used this scanner how do you transfer the info to your computer and in what format would you save it. then would the file size verses image quality be OK ?
Could the info be scanned into PDF Format for future downloading from a host server or site ?
Maybe the easiest way is to scan the pages with your normal scanner save them as tiff files and burn them to CD that way we could obtain high quality images of the pages for future processing.
Gee this is turning out bigger than the movie Ben Hur.
But i hope this helps.
Bob Cornwell..........ozflea
Al,
That's never going to work. You need a scanner with resolution of phenomenal resolution to do a contact scan like that. A tool like "molecule" is linking to on ebay is what's going to be needed, I'm afraid.
Look in the attached image where the magnification window (4×<tt></tt>) is immediately to the right of the area it's magnifying. The information is buried in the pixels.
Glen
That's never going to work. You need a scanner with resolution of phenomenal resolution to do a contact scan like that. A tool like "molecule" is linking to on ebay is what's going to be needed, I'm afraid.
Look in the attached image where the magnification window (4×<tt></tt>) is immediately to the right of the area it's magnifying. The information is buried in the pixels.
Glen
Al, even if you could get a scanner with 1,000,000 DPI resolution (or whatever astronomical value it would require) you'd end up with a file that would fill a CDROM if you scanned the whole card at once.
An alternative might be to go to the public library and print out the pages one at a time using their microfiche reader. Last time I did something like that it was 10¢ a page or so. You could then scan the individual pages.
Something like this is going to require optical magnification, I'm afraid. Digital will likely still be too expensive at this stage of the consumer game.
Glen
An alternative might be to go to the public library and print out the pages one at a time using their microfiche reader. Last time I did something like that it was 10¢ a page or so. You could then scan the individual pages.
Something like this is going to require optical magnification, I'm afraid. Digital will likely still be too expensive at this stage of the consumer game.
Glen
You lost me there.Molecule said:
PNG and GIF do just fine on grayscale, with the same 256 possibilities between white and black as 24-bit JPEG. The reason JPEG excels over the others for photographs is because of the method of averaging pixels for superior compression at a cost of data integrity. In photographs, certain loss of information is acceptable for most purposes because the viewer's brain fills in the gaps. It's much the same as MP3 or OGG encoding of audio, where certain losses are glossed over in a casual listening.
Using JPEG for a scanned page of both text and photographic images will result in a smaller file at the expense of fine detail everywhere. Using PNG, as should be done, will require much more data being recorded to the end result due to the photographic portions being largely non-compressible in a loss-less way.
Glen
