In [43]: b = add_bordo(trecime, 20, (256, 256, 256))
In [44]: im.visd(b)
Traceback (most recent call last):
File "/opt/anaconda3/lib/python3.6/site-packages/IPython/core/formatters.py", line 345, in __call__
return method()
File "/home/andrea/Documents/Uni/Didattica/Prog1/2018-19/Lezioni/image.py", line 31, in _repr_png_
img.save(b)
File "/home/andrea/Documents/Uni/Didattica/Prog1/2018-19/Lezioni/png.py", line 1279, in save
w.write(file, self.rows)
File "/home/andrea/Documents/Uni/Didattica/Prog1/2018-19/Lezioni/png.py", line 620, in write
nrows = self.write_passes(outfile, rows)
File "/home/andrea/Documents/Uni/Didattica/Prog1/2018-19/Lezioni/png.py", line 769, in write_passes
extend(row)
File "/home/andrea/Documents/Uni/Didattica/Prog1/2018-19/Lezioni/png.py", line 766, in <lambda>
return lambda sl: f([int(x) for x in sl])
OverflowError: unsigned byte integer is greater than maximum
<image.Immagine at 0x7f6ed09aeeb8>
In [45]:
In [45]: b = add_bordo(trecime, 20, (255, 255, 255))
In [46]: im.visd(b)
In [47]: b = add_bordo(trecime, 20, (255, 0, 255))
In [48]: im.visd(b)
In [49]: def grey(img):
    ...: h, w = len(img), len(img[0])
In [50]: def grey(img):
    ...: h, w = len(img), len(img[0])
    ...: grigia = create(w, h)
In [51]: def grey(img):
    ...: h, w = len(img), len(img[0])
    ...: grigia = create(w, h)
    ...: for x in range(w):
    ...: for y in range(h):
    ...: media = sum(img[y][x])//3
    ...: grigia[y][x] = media, media, media
In [52]: def grey(img):
    ...: h, w = len(img), len(img[0])
    ...: grigia = create(w, h)
    ...: for x in range(w):
    ...: for y in range(h):
    ...: media = sum(img[y][x])//3
    ...: grigia[y][x] = media, media, media
    ...: return grigia
In [53]: g = grey(trecime)
In [54]: im.visd(g)
In [55]: def grey2(img):
    ...: return [ [
    ...: (sum(c)//3, sum(c)//3, sum(c)//3) for c in riga
    ...: ] for riga in img
    ...: ]
In [56]: g = grey2(trecime)
In [57]: im.visd(g)
In [58]: def inversa(img):
    ...: return [ [
    ...: (255-r, 255-g, 255-b) for r,g,b in riga
    ...: ] for riga in img
    ...: ]
In [59]: i = inversa(trecime)
In [60]: im.visd(i)
In [61]: def filtro(img, funz_filtro):
    ...: return [ [
    ...: funz_filtro(r,g,b) for r,g,b in riga
    ...: ] for riga in img
    ...: ]
In [62]: i = filtro( trecime, lambda r,g,b: (255-r, 255-g, 255-b))
In [63]: im.visd(i)
In [64]: g2 = filtro( trecime, lambda r,g,b: ((r+g+b)//3, (r+g+b)//3, (r+g+b)//3))
In [65]: im.visd(g2)
In [66]: def riflessa(img):
    ...: h = len(img)
In [67]: def riflessa(img):
    ...: h = len(img)
    ...: w = len(img[0])
In [68]: def riflessa(img):
    ...: h = len(img)
    ...: w = len(img[0])
    ...: res = create(h, w)
In [69]: def riflessa(img):
    ...: h = len(img)
    ...: w = len(img[0])
    ...: res = create(h, w)
    ...: for x in range(w):
    ...: for y in range(h):
    ...: res[x][y] = img[y][x]
    ...: return res
In [70]: r = riflessa(trecime)
In [71]: im.visd(r)
In [72]: