EOS 450D Large books digitizing

[leextranjee]

hola amigo citroen2cv, gracias por tu respuesta, pero la verdad es que necesito algunos consejos mas amplios, ya que en realidad quiero digitalizar algunos libros, y de hecho ya tengo en mente algunas camaras, pero me gustaria me asistieras en esta decision, y sobre todo para saber que hacer despues, es decir que clase de programa utilizar?, puedes contactarme a mi correo o existe un correo a donde te pueda contactar??, gracias

[leextranjee]

very impressive!, but i do not have that kind of camera, what would be your advice, if i want to digitize a book, i mean what kind the camera do i need??, what would be the minimal requirements about the camera???

thanks for your answer

[citroen2cv]

@leextranjee Una SLR Canon 1000D (Rebel XS) o superior con lente de 50 mm y un PC, es la mejor opción para digitalizar libros. Pero puedes utilizar una cámara puente o incluso una compacta de bajo precio. Mira en mis videos, también hay sobre estas alternativas.

[superanima]

Hi, what kind of column support did you have there?

And where can I find one? :-)

[citroen2cv]

In the video I am using part of a vertical stand Zeiss for the Contax camera that my father bought in the 60s. This device is not manufactured at the present, but you can find something equivalent in the catalogs of Kaiser or Manfrotto. A cheap alternative is to get an old enlarger and screw the camera in it. In some models of MeOpta (an probably other brands) you can easyly dismount the projection head and replace with a camera.

[JohnM3D]

Sorry for the stupid question but... What is that clunk-clunk noise? Can't be the camera!

[videouzleg]

Impressive solution!!!

[PigsCanFly99]

shouldn't sweep down the center of the book like that .. puts finger grease in the binding and is not great for the physical contiguity of the binding (either) - plastically deforming the paper fibers and binding matrix .. book bindings are a compromise on so many levels .. ancient ones are only so much more sensitive to mishandling. Modern OCR can easily handle centreline distortion. No need for perfectly flat image .. get a lens with better depth of field. Trust this as reasonable.

[amiyanaik]

will you have spherical aberation for figures say for example maps of more than a4 size

[citroen2cv]

It depends on the lens quality. Doesn't mean an expensive extra luminous zoom. I got the best results using a cheap 50 mm lens and aperture 5.6 to 8. Zoom and wide angle lenses are not advisable.

[oscarsun72]

but the point is how large solution can be shoot? can it get 300dpi or more?

[citroen2cv]

The sensor size of the eos 450D is 4272x2848 pixel.

4272/300=14'

2848/300=9'

If your document is 9x14 inches you can get a 300dpi scannig, more if the original is smaller.

But, really do you need 300 dpi? Now you are reading a screen with less than 100dpi resolution.

[oscarsun72]

Thank you for your detailed answers!

9*14 inch about A4 size paper .that's ok.

I care about 300dpi because I need to OCR pictrues of books ;not only reading those on the screen.

[lucirz]

@citroen2cv what software do u use to crop and edit the pics?

[citroen2cv]

@lucirz To crop and enhance the images I'm using Scan Tailor. This russian freeware works specially fine with only text books. And fully automatic.

[VanMedia]

@citroen2cv also can you answer me this? where did you get the stand to put the camera on? what's that stand called? it's not a tripod right?

[citroen2cv]

@VanMedia Read in this page my answer to superanima or watch my video " Digitizing bound volumes II ", the audio is in Spanish, but includes titles in English.

[lucirz]

@lucirz oh scan tailor, i'm already using that :D. i thought you used something else. it's not perfect, but its very good, especially for a free software. i wish that it would get more attention and donations, so that it can improve even more.

[norwegian75]

diybookscanner -dot- org

[nowzuzdiez]

OK, not bad , but put a exciton cable on your keyboard, and put it on the floor, and use your foot to to press the space bar, that will speed thing up a lot !!

[citroen2cv]

I think you are speaking about any kind of pedal switch, aren't you?. A good idea. But I'm not sure, what means "exciton cable"?, can't find in google.

[nowzuzdiez]

sorry, my bad its Extension,

[shiyali3]

(English for the sake of everyone) I'd do it otherwise: heavy books (if not every book) need a a book support, could be a DIY acid-free cardboard one; I'd set the camera in 45° angle, and rotate it 180° taking 1 snap 1 page. Half the pages would be upside down, but that'd be fixed with batch processed rotation (IrfanView would do), and overall quality per page would be higher. I assume the pivoting camera in 45° contraption can be achieved with some professional tripod or device of the like.

[shiyali3]

My interest in bookscanning revolves around the idea of scanning parts of the book for further OCR and feeding into a database. Thus quality should be optimised to achieve lower error rates at OCR process, rather than "photorrealistic" accuracy

[Fretkillr]

The human page turner saves at least $10,000.

[pedraopy]

Muy interesante el método de escaneo.

Tambien tengo la 450D, así que le tengo unas consultas:

- Que soporte utiliza para sujetar la cámara? Marca, modelo, etc...

- Que valores f (diafragma) recomienda?

Agradecido ya por su respuesta.

[citroen2cv]

He usado una columna de reproducción para Contax (Zeiss) de los años 50. Pero en tiendas de foto profesional pueden ahora encontrarse soportes similares y mejores. Una alternativa es comprar una ampliadora usada -ahora están baratas- y adaptarla.

Los mejores resultados los he conseguido con una lente fija de 50 mm. La mayor nitidez diafragmando entre 5.6 y 8.

[alcindoalmeida]

What is the configuration that you use in Canon 450D to make this photos?

Thanks

[citroen2cv]

En jpeg: 100 ASA, Nitidez alta, Contraste alto, Saturación baja.

Mejor 100 ASA y disparar en RAW. Una lente FIJA de 50mm y enfoque manual en la pantalla del PC.

[synik1979]

Wow, that's actually a pretty cool idea mate! Well done...you must have alot of spare time on your hands. Lol. What are you going to do with the books once you've photographed them though?

[x7y7]

Un scaner de 750€ no esta mal!

[Aeneas1985]

What is the maximum size of the preview image? Is it possible to change the size of the preview image? I want to view a whole page of A4 in full and be able to read the text on the preview video stream....

[BosnjakPartizan]

thanks for the demonstration. which software are you using to take the pictures? I apologize for writing in English. I do not speak Spanish.

[citroen2cv]

The software for remote shooting is Canon and it's INCLUDED with the camera. You can adjust aperture, speed, WB, manual focus etc. in the screen of your computer with no additional sofware, to shot press space bar.

[liontreetop]

are you aware of good OCR software so that the file becomes searcable?

[charlessmyth]

abbyy fine reader.

[basneum]

Tremenda esa 450D: ¡grandísima cámara, sí señor! Da mucho juego, ya no sólo por tener la calidad que se espera de una cámara semiprofesional, sino por el enfoque en Live View (como se ve en el vídeo).

¡A disfrutarla!

[peterlozano2007]

¿que software es ese?

[citroen2cv]

Lo siento, no suelo ver esto mas que los fines de semana.

Pues el soft que viene de serie con la cámara Canon. Otras marcas con Live View traen software para realizar varios ajustes y disparar desde el PC, via conexión USB, pero no para ver la imagen y enfocar manualmente en pantalla.