def process_file(filename):
ans = []
try:
f = file(filename).read()
for line in range(32):
offset = line*2048
vbiraw = np.array(np.fromstring(f[offset:offset+2048], dtype=np.uint8), dtype=np.float32)
for tl in np.arange(1.05,1.2,0.05):
for th in np.arange(2.1,2.4,0.05):
for g in np.arange(1.1,5.2,1.0):
for go in np.arange(1.1,5.2,1.0):
#thresh_low=1.15 thresh_high=2.10 gauss_sd=1.10 gauss_sd_offset=1.10
v = Vbi(vbiraw, thresh_low=tl, thresh_high=th, gauss_sd=g, gauss_sd_offset=go)
tmp = v.find_offset_and_scale()
if tmp:
packet = v.deconvolve()
guessview.draw(vbiraw, v.g.convolved*256)
print printer.do_print(packet), "thresh_low=%1.2f thresh_high=%1.2f gauss_sd=%1.2f gauss_sd_offset=%1.2f" % (tl, th, g, go), line
else:
packet = None
print "no teletext in line", line
except IOError:
pass
return (filename, ans)
def process_file(filename):
ans = []
vbiraw = np.zeros((2048,), dtype=np.uint8)
interp_x = (np.arange(0,1440,1.0) * 5.112 / 4.05) + 50
interp_y = np.zeros(1440, dtype=np.float32)
scaler = interp1d(interp_x, interp_y,
kind='linear', copy=False,
bounds_error=False, fill_value=50)
try:
f = file(filename).read()
for line in range(0,1000000):
if (line % 17) in [9]:
offset = line*1600
interp_y[:] = np.fromstring(f[offset:offset+1440], dtype=np.uint8)
for bw in np.arange(3.891,3.897,0.01):
interp_x[:] = (np.arange(0,1440,1.0) * 5.112 / bw) + 90
vbiraw = scaler(np.arange(0, 2048, 1)) + 20
for tl in np.arange(1.21,1.22,0.02):
for th in np.arange(3.01,3.02,0.02):
for g in np.arange(1.751,2.1,0.5):
for go in np.arange(1.751,2.1,0.5):
#thresh_low=1.15 thresh_high=2.10 gauss_sd=1.10 gauss_sd_offset=1.10
v = Vbi(vbiraw, thresh_low=tl, thresh_high=th, gauss_sd=g, gauss_sd_offset=go, offset_low=55.0, offset_high=150.0,
find=[Kalejdoskop, Medicina, Komentarii, Finans, Ekonomika, Teleinf, Automagazin])
tmp = v.find_offset_and_scale()
if tmp:
packet = v.deconvolve()
guessview.draw(vbiraw, v.g.convolved*256)
print printer.do_print(packet), "thresh_low=%1.2f thresh_high=%1.2f gauss_sd=%1.2f gauss_sd_offset=%1.2f bw=%1.3f" % (tl, th, g, go, bw), line, line%17
sys.stdout.flush()
else:
packet = None
#print "no teletext in line", line
except IOError:
pass
return (filename, ans)
