Hallo,
ich brauche umbedingt hilfe. Es geht um ein script, dass ich zum scannen benutzen will. dabei benutze ich das Module Pyinsane https://github.com/jflesch/pyinsane
auf der seite wird versucht zu zeigen, wie man einen scann ausführt, jedoch funktionirt das bei mir nicht.
ich will alles so einfach wie möglich halten ca. so:
try:
import src.abstract as pyinsane
except ImportError:
import pyinsane.abstract as pyinsane
device = pyinsane.Scanner(name=0x19ed130)
scan_session = device.scan(multiple=False)
scan_session.scan.read()
scan_session.images[0]
ich bekomme aber folgende fehler meldung:
root@raspberrypi:/home/pi# python3 /home/pi/Desktop/scannertest.py
Segmentation fault
könnte mit bitte jemand erklären wie ich einen scan starte und das bild irgentwo abgespeichert wird.
Schonmal danke 
hier noch ein Beispiel Script der Webseite, bei dem wenigstens der scanner angesprochen wird.
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")
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Hat noch irgendwer eine Idee oder ein Tipp??? 