ich will ein Script erstellen, das meinen Scanner starten und das bild abspeichern kann. Dazu habe ich mir das Module pyinsane https://github.com/jflesch/pyinsane installiert. Anbei habe ich mal ein Example Script von der Webseite angefügt, jedoch erhalte ich einen Fehler beim Starten. Um mein eigenes Script zu schreiben, sollte ich diesen Code verstehen oder den Fehler beseitigen dann kann ich selber rumprobieren.
Der Beispiel Code läuft fast bis zum ende dann kommt aber immer die Gleiche Fehlermeldung (steht unter dem beispiel Code).
Code: Alles auswählen
import sys
``from PIL import Image
try:
import src.abstract as pyinsane
except ImportError:
import pyinsane.abstract as pyinsane
def set_scanner_opt(scanner, opt, value):
print("Setting %s to %s" % (opt, str(value)))
try:
scanner.options[opt].value = value
except (KeyError, pyinsane.SaneException) as exc:
print("Failed to set %s to %s: %s" % (opt, str(value), str(exc)))
if __name__ == "__main__":
steps = False
args = sys.argv[1:]
if len(args) <= 0 or args[0] == "-h" or args[0] == "--help":
print("Syntax:")
print(" %s [-s] <output file (JPG)>" % sys.argv[0])
print("")
print("Options:")
print(" -s : Generate intermediate images (may generate a lot of"
" images !)")
sys.exit(1)
for arg in args[:]:
if arg == "-s":
steps = True
args.remove(arg)
output_file = args[0]
print("Output file: %s" % output_file)
print("Looking for scanners ...")
devices = pyinsane.get_devices()
if (len(devices) <= 0):
print("No scanner detected !")
sys.exit(1)
print("Devices detected:")
print("- " + "\n- ".join([str(d) for d in devices]))
print("")
device = devices[0]
print("Will use: %s" % str(device))
print("")
source = 'Auto'
if (device.options['source'].constraint_type
== pyinsane.SaneConstraintType.STRING_LIST):
if 'Auto' in device.options['source'].constraint:
source = 'Auto'
elif 'FlatBed' in device.options['source'].constraint:
source = 'FlatBed'
else:
print("Warning: Unknown constraint type on the source: %d"
% device.options['source'].constraint_type)
set_scanner_opt(device, 'resolution', 300)
set_scanner_opt(device, 'source', source)
set_scanner_opt(device, 'mode', 'Color')
print("")
print("Scanning ... ")
scan_session = device.scan(multiple=False)
if steps and scan_session.scan.expected_size[1] < 0:
print("Warning: requested step by step scan images, but"
" scanner didn't report the expected number of lines"
" in the final image --> can't do")
print("Step by step scan images won't be recorded")
steps = False
if steps:
last_line = 0
expected_size = scan_session.scan.expected_size
img = Image.new("RGB", expected_size, "#ff00ff")
sp = output_file.split(".")
steps_filename = (".".join(sp[:-1]), sp[-1])
try:
PROGRESSION_INDICATOR = ['|', '/', '-', '\\']
i = -1
while True:
i += 1
i %= len(PROGRESSION_INDICATOR)
sys.stdout.write("\b%s" % PROGRESSION_INDICATOR[i])
sys.stdout.flush()
scan_session.scan.read()
if steps:
next_line = scan_session.scan.available_lines[1]
if (next_line > last_line):
subimg = scan_session.scan.get_image(last_line, next_line)
img.paste(subimg, (0, last_line))
img.save("%s-%05d.%s" % (steps_filename[0], last_line,
steps_filename[1]), "JPEG")
last_line = next_line
except EOFError:
pass
print("\b ")
print("Writing output file ...")
img = scan_session.images[0]
img.save(output_file, "JPEG")
print("Done")Code: Alles auswählen
sudo python /home/pi/Desktop/scantest.py -s 1
Output file: 1
Looking for scanners ...
Devices detected:
- Scanner 'genesys:libusb:001:006' (Canon, LiDE 110, flatbed scanner)
Will use: Scanner 'genesys:libusb:001:006' (Canon, LiDE 110, flatbed scanner)
Setting resolution to 300
Setting source to Auto
Failed to set source to Auto: <class 'pyinsane.rawapi.SaneStatus'> : Data is invalid (4)
Setting mode to Color
Scanning ...
|Traceback (most recent call last):
File "/home/pi/Desktop/scantest.py", line 107, in <module>
steps_filename[1]), "JPEG")
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 1439, in save
save_handler(self, fp, filename)
File "/usr/local/lib/python2.7/dist-packages/PIL/PngImagePlugin.py", line 572, in _save
ImageFile._save(im, _idat(fp, chunk), [("zip", (0,0)+im.size, 0, rawmode)])
File "/usr/local/lib/python2.7/dist-packages/PIL/ImageFile.py", line 481, in _save
e = Image._getencoder(im.mode, e, a, im.encoderconfig)
File "/usr/local/lib/python2.7/dist-packages/PIL/Image.py", line 399, in _getencoder
return apply(encoder, (mode,) + args + extra)
TypeError: an integer is requiredDanke in voraus,
Laurin