Legacy ImageMagick Discussions Archive

Hi,

We get also slow process with Windows (XP, Seven, ...). It's more 2x slower than on a Linux.
What can I do to improve speed on Windows ?

Hello,

I have done other tests with other samples, sometime the barcode (same size) are not recognize. Increasing the density give not best results.

For exemple :
Sample_A, OK with density 184 but not with 185
Sample_B, not ok with density 185 but ok with 184.

What is your advise to find the good ...

All is ok...

I split PDF's (1 new PDF for each page) and all is ok.

Hello,

I am using this command. It works fine but I have some problems with large PDF...
convert -density 150 -threshold 55% SOURCE.pdf +adjoin DEST.gif

I have tested to scan a big PDF (130 mb, 780 pages) and it need more than 20gb...

How can I decrease the quantity of memory used to do that ...

Thank you.

Hello,

Thank you el_supremo.

I test the export in .jpg and in .gif. My test file has 69 barcodes (qrcodes from 1.8x1.8 cm and scan with a Scan Station 500 in 200 DPI in OCR). To read all barcodes, the command with JPG need a density of 160 and with GIF a density of 150.
IM version 6.2.8 03/31/08 ...

Thank you el_supremo :-)

>>It decoded it with no problem at all
Zbar is able to read from PDF but the quality of detection is not very good. Try (if you want) this one : http://www.megaupload.com/?d=ZYECDWZ7 (PDF scan in OCR 200 DPI)
This is 20 qrcode and zbar is able to recognize 5.
zbarimg Test1 ...

Hello,

I have the same problem...

Are there an option to disable it ? doesn't work for this.

Thanks

Hello,

My goal is to read some barcode (qrcode with http://zbar.sourceforge.net/) printed on sheets. I am using a scanner (creating PDF) and the powerful ImageMagick to convert PDF to JPG.

Process :

[On a sheet one barcode] -> [Scan 200 DPI] -> [PDF] -> [JPG] -> [Read barcode with Zbar]

The ...