(05-02-2022, 06:39 PM)Chemist116 Wrote:PixLab Wrote:Now about the scanner, just my 2 cents, although I don't use those.
Thank you for inserting that nice image showing those models. I do feel that you understand my needs here.
I kept doing more research on my own and I found this list of recommendations on PC Magazine for which I suggest you to take a look to those models that also feature the one mentioned earlier. Yes I mean the wand type.
The thing with those is that the majority is fed with a single document which rolls into the device and isn't something that you can use in a book which is binded.
There is also this list which if you take a look all models there are of the arm kind you shown in the right.
I guess more or less the quality will vary I don't know by how much between manufacters but due my needs I don't think it will matter much.
Um... I feel that you do need a wake up call, those pseudo review's website want to sell product only, they never tried the product they are supposedly to review, look at the product's picture on their website, they are all from the manufacturer website or stock photo/video, plus ALL their links to buy a product are with an affiliated ID, that's how they made a living, PC magazine, techradar and so on have content writers to write article were they need to put a certain amount of key word for SEO purpose, etc... I won't get in as it's not the purpose of this thread.
Look the screenshot below, 4 different websites, same point of view of the same product, EVEN the highlight on the top edge and the shadows underneath are the very-same!, So lazy people in those website ➤ just manufacturing pseudo articles by thousands....
If you want a more reliable reviews, check the 1 to 3 star reviews of buyers on amazon for example and check why they don't like it
For example the model using your hand, they mostly said that you cannot scan in the middle of the book as the edge of the scanner is too large (and there are many more complains about how to use it)
Money wise...
The different ones with a stand are basically just camera (I won't be surprised if they are webcam camera/sensor)! Yes you read well they are 18 to 20 Mega pixels camera on average, thus my smartphone which is an oppo A92 (it's a "free" smartphone, as every 2 years my provider give me a new phone with my plan, just to tell how cheap my smartphone is) can do a 48MP picture ➤ way way better than those "webcam" camera on those scanner with a stand for $500.
(05-02-2022, 06:39 PM)Chemist116 Wrote: The thing is, and this is where Gimp comes in, how do I get rid off the rounded effect or groove you see when you take a picture of a book pages?
Near the edge where the page meets the spine of the book there is a curve. Some of those models come with a propietary software which will modify the image to flatten that surface so in the end there is a nice straight page.
Can I do the same with Gimp?.
Theoretically, yes ➤ the curve bend tool or lens distortion tool comes to my mind, but I never tried them for that specific purpose, it also depend of the angle of view you will scan your book, I would NOT recommend to put the book on a flat surface but on something like the image below.
(05-02-2022, 06:39 PM)Chemist116 Wrote: Yes, I am disregarding the earlier comment about using a camera or an android device on a tripod as I do not have those available and I don't think it will produce the image which I am aiming at.
My second doubt is, does it exist some filter to make a color image to be black and white?. No I don't mean to make it grayscale I mean a black and white image like the one you get with a xerox copy so that the letters and formulas and sketches like found in geometry can be seen more clearly or have more contrast and can be later reprinted.
pure black and white Yes! Go to Colors ➤ Threshold play with the 2 cursors to fine tune which should be more black or more white (yes in the B&W example below I just tried a very quick flatten on a book with the curve bend this can be a good tool with a lot more care and a way bigger image
)(05-02-2022, 06:39 PM)Chemist116 Wrote: There is also the option of using a flatbed scanner, however I don't like this idea because it will cause strain in the spine when pressing in the reader surface and it could also damage the unit due the weight of the book. Although my collection isn't that heavy.
Since you mentioned if it does worth about trying the one which is a wand. It seems that there isn't much distortion but the only way to say is by actually trying it. At this point the reason which makes me to prefer these kind over the others is that with the wand you avoid that curve or round distortion near the spine of the book. This is because you can sweep over the surface.
Avoiding distortion near the spine
(05-02-2022, 06:39 PM)Chemist116 Wrote:PixLab Wrote:Do you feel ok to manually slowly scan with your hand each page of those volume handling the hand scanner perfectly straight while moving down?
Regarding the 10 volume set and the thing of doing it one by one. Yes I know it can sound tedious and time consuming but I don't intend to do it in one batch.
I haven't took a picture of my collection, but it just happens that a guy who owns another copy has. So you can see how it looks below.
As you can see it isn't really that beefy like the Encyclopedia Britannica. Its really brief and succinct and that why I want to digitalize it.
All and all, what do you think?. Should I give it a try?. Can you please attend my questions as well?.
That's a lot to scan...
About what I think, you might not like it
as I would go with my phone or DSLR on a tripod A question remain, did you search for a PDF version on the internet? https://www.google.com/search?q=Matemati...ntu&hs=98n
In the end I can be wrong, all above are just my thoughts
(05-02-2022, 05:14 PM)Ofnuts Wrote: Yes,but the image quality of modern smartphones is better than what you get with a hand-held scanner. And the other option on a stand is not going to be so cheap if the camera is as good as in a recent smartphone.
I couldn't agree more