#35 Fail to decode after printing: "Page label is not readable"

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7 місяці тому відкрито monperrus · 4 коментарів
monperrus прокоментував(ла) 7 місяці тому

I’m printing a file that fits on one single A4 page. The original BMP can be decoded. The printed version looks good.

However, when decoding after scanning, I hit Page label is not readable

Any idea to fix that?

Thanks!

Decoding 02-msg-rotated.bmp into foo.gpg
Reading 02-msg-rotated.bmp...
Searching for raster...
Searching for grid lines...
Decoding
Page label is not readable
I'm printing a file that fits on one single A4 page. The original BMP can be decoded. The printed version looks good. However, when decoding after scanning, I hit `Page label is not readable` Any idea to fix that? Thanks! ``` Decoding 02-msg-rotated.bmp into foo.gpg Reading 02-msg-rotated.bmp... Searching for raster... Searching for grid lines... Decoding Page label is not readable ```
scuti прокоментував(ла) 7 місяці тому
Власник

When I and @suhrke were first testing scanning and decoding, we did so on an inkjet printer, which has “limits” such as splashing the ink and distorting any fine quality scanning/decoding may have required.

If the original BMP can be decoded, then you could try to adjust the print and scan settings.

When I and @suhrke were first testing scanning and decoding, we did so on an inkjet printer, which has "limits" such as splashing the ink and distorting any fine quality scanning/decoding may have required. If the original BMP can be decoded, then you could try to adjust the print and scan settings.
monperrus прокоментував(ла) 6 місяці тому
Автор

Thanks for your answer. After trial-and-error sessions with the printer and scanner settings, it still does not work.

Any idea on how to reduce the point density (fewer rows, fewer columns)?

Thanks!

Thanks for your answer. After trial-and-error sessions with the printer and scanner settings, it still does not work. Any idea on how to reduce the point density (fewer rows, fewer columns)? Thanks!
scuti прокоментував(ла) 6 місяці тому
Власник

You could try to reduce the dots per inch. It does mean the paper will fit less data on it.

You could try to reduce the dots per inch. It does mean the paper will fit less data on it.
monperrus прокоментував(ла) 5 місяці тому
Автор

By changing the DPI with paperback-cli --encode -d XXX, I make good progress.

ngood: 625
nbad: 6
nsuper: 13
nrestored: 7968
Unrecoverable errors on page, please scan it again

Once I have access to a better printer, I’ll try again.

Thanks a lot!

By changing the DPI with `paperback-cli --encode -d XXX`, I make good progress. ``` ngood: 625 nbad: 6 nsuper: 13 nrestored: 7968 Unrecoverable errors on page, please scan it again ``` Once I have access to a better printer, I'll try again. Thanks a lot!
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