def autocontrast(img, prob, mag=0):
# maximize the image contrst to black and white
if random.random() < prob:
enhancer = Contrast(img)
return enhancer.enhance(4)
else:
return img
def contrast(img, prob=0.2, mag=1.3):
# mag : 0: balck 1: original 3.0 almost max [0.1, 1.9]
if random.random() < prob:
enhancer = Contrast(img)
return enhancer.enhance(mag)
else:
return img
def _do_enh_contrast(c):
img = editWindow.controlImg()
if img and c and c!=1:
enh = Contrast(img)
img = enh.enhance(c)
editWindow.updateImage(img) #win.update_img(img, True, label='enh_contrast %f'%c, operation=do_enh_contrast, params=(c,))
editWindow.unsetCtrl()
def _onContrastChange(value):
img = editWindow.controlImg(False)
try:
val = float(value)
contr = Contrast(img)
img = contr.enhance(val)
editWindow.updateImage(img)
except:
pass
def _do_set_brightness(vals): #b, c):
img = editWindow.controlImg()
if not vals: # rollback
editWindow.updateImage(editWindow.savedImg)
if img and vals and vals != (1,1):
if vals[0] != 1:
bright = Brightness(img)
img = bright.enhance(vals[0])
if vals[1] != 1:
contr = Contrast(img)
img = contr.enhance(vals[0])
editWindow.updateImage(img) #win.update_img(img, True, label='set_brightness %f, %f'%(b, c), operation=do_set_brightness, params=(b,c))
editWindow.unsetCtrl()
