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Annotation of wikisrc/scanner.mdwn, revision 1.3

1.1       wiz         1: Using Scanners on NetBSD
                      2: ========================
                      3: 
                      4: Setup
                      5: -----
                      6: 
                      7: To connect a USB scanner do:
                      8: 
                      9: 1. Check if it is supported by SANE:
                     10: 
                     11:   [SANE:Supported Devices](http://www.sane-project.org/sane-mfgs.html)
                     12: 
                     13: 2. Make /dev/ugen0 usable through removal of uscanner from the kernel config by commenting it:
                     14: 
1.2       wiz        15:         # cd /usr/src/sys/arch/i386/conf
                     16:         # cp GENERIC GENERIC_UGEN
1.1       wiz        17: 
                     18:     Comment out the uscanner device:
                     19: 
1.2       wiz        20:         # vi GENERIC_UGEN
1.1       wiz        21: 
                     22:     by using '#' so it looks like:
                     23: 
                     24:         # USB scanners
1.2       wiz        25:         # uscanner* at uhub? port ?
1.1       wiz        26: 
                     27:     Then, continue to config, make and install the new kernel:
                     28: 
1.2       wiz        29:         # config GENERIC_UGEN
                     30:         # cd ../compile/GENERIC_UGEN
                     31:         # make depend
                     32:         # make
                     33:         # cp netbsd /netbsd.ugen
                     34:         # cp /netbsd /netbsd.old
                     35:         # cp netbsd /netbsd
                     36:         # shutdown -r now
1.1       wiz        37: 
                     38: 3. Add the [SANE](http://www.sane-project.org/) packages to the system:
                     39: 
1.2       wiz        40:         # cd /usr/pkgsrc/graphics/sane-backend
                     41:         # make install
                     42:         # cd ../sane-frontend
                     43:         # make install
                     44:         # cd ../xsane
                     45:         # make install
1.1       wiz        46: 
                     47: 4. Connect the USB scanner and check if it's recognized:
                     48: 
1.2       wiz        49:         # sane-find-scanner
1.1       wiz        50: 
                     51:     When the scanner is found, check if it is correctly supported and usable:
                     52: 
1.2       wiz        53:         # scanimage -L
1.1       wiz        54: 
                     55:     Some scanners (e.g. the [Epson Perfection 2480](http://wiki.ubuntuusers.de/Epson_Perfection_2480)) need firmware loaded; put the firmware image in some place and add the scanner backend configuration file to point to it.
                     56: 
                     57:     Scan an image by using the name of appropriate backend found on the SANE supported devices page (usually printed out by sane-find-scanner), for an example:
                     58: 
1.2       wiz        59:         # scanimage -v -B -d name_of_backend:libusb:/dev/usb0:/dev/ugen0 --format pnm > /tmp/image.pnm
1.1       wiz        60: 
                     61:     or
                     62: 
1.2       wiz        63:         # scanimage -v -B -d hp:libusb:/dev/usb0:/dev/ugen0 --format pnm > /tmp/image.pnm
1.1       wiz        64: 
                     65:     or
                     66: 
1.2       wiz        67:         # scanimage -v -B -d gt68xx:libusb:/dev/usb0:/dev/ugen0 --format pnm > /tmp/image.pnm
1.1       wiz        68: 
1.3     ! wiz        69:     or use an alternative X frontend:
1.1       wiz        70: 
1.2       wiz        71:         # xsane
1.1       wiz        72: 
                     73:     To find what options are available, do:
                     74: 
1.2       wiz        75:         # scanimage --help -d gt68xx:libusb:/dev/usb0:/dev/ugen0
1.1       wiz        76: 
                     77: User access
                     78: -----------
                     79: 
                     80: To grant another user access to use the scanner, create a 'scanner' group.
                     81: 
                     82:     # groupadd scanner
                     83: 
                     84: Add user to the group scanner:
                     85: 
                     86:     # usermod -G scanner user_name
                     87: 
                     88: Change group for a device:
                     89: 
                     90:     # chgrp scanner /dev/ugen*
                     91: 
                     92: For some drivers, you also need access to the usb bus devices:
                     93: 
                     94:     # chgrp scanner /dev/usb*
                     95: 
                     96: Also check if the permissions are sufficient, otherwise also do:
                     97: 
                     98:     # chmod g+rw /dev/usb* /dev/ugen*
                     99: 
                    100: Additional features
                    101: -------------------
                    102: 
                    103: To postprocess the images, the [ImageMagick](http://www.imagemagick.org/) package is very useful. For example, to batch-convert some images to black/white, use:
                    104: 
                    105:     # mkdir ./bw ; for f in *.jpg ; do convert -colorspace gray "$f" "./bw/$f.jpg" ; done