def search_with_value(page: page_dat, chars: [char_dat], mult: float, max_x: int, max_y: int) -> wobble:
histodiff_sum = 0
best_diff_sum = 9999999999999999999999999999999999999999999999999999999999999
max_wobble = mult * 1.1
wobinc = (max_wobble - mult) / 10
curx = mult
cury = mult
bestx = None
besty = None
while(curx < max_wobble and int(max_x * (curx + wobinc)) < page.x):
curx += wobinc
while(cury < max_wobble and int(max_y * (cury + wobinc)) < page.y):
cury += wobinc
histodiff_sum = 0
for char in chars:
x1 = int(curx * char.x1)
y1 = int(cury * char.y1)
x2 = int(curx * char.x2)
y2 = int(cury * char.y2)
page_char = page.img.crop([y1, x1, y2, x2])
page_charr = autocontrast(page_char.resize([char.img.width, char.img.height], Image.BOX))
page_diff = difference(page_charr, char.img).histogram()
histo_sum = 0
inc = 0
for diff in page_diff:
inc += 1
histo_sum += diff * inc
histodiff_sum += histo_sum
if histodiff_sum < best_diff_sum:
best_diff_sum = histodiff_sum
bestx = curx
besty = cury
return wobble(bestx, besty, best_diff_sum)
def apply_annotations(self, images):
"""
Apply annotations to images returning a numpy.ndarray
Args:
images (3D NumPy array): Images that will be annotated
Returns:
RGB numpy array or None: Annotated images, if successfully applied
"""
# Create output array with shape of input, plus 3 channels for RGB
output_images = np.zeros((*images.shape, 3), dtype="uint8")
try:
if not self._saved_annotations:
raise AttributeError(
"Annotations cannot be as no annotations were successfully extracted"
)
images = np.flip(images, 1)
for idx, image in enumerate(images, 0):
# Make 'L' type PIL image from 2D array, autocontrast, then convert to RGBA
image = autocontrast(
Image.fromarray(image).convert("L")).convert("RGBA")
# Combine annotations and image by alpha
image.alpha_composite(self._annotations)
# Throw away alpha and fill into output array
output_images[idx] = image.convert("RGB")
return output_images
except Exception:
logging.error("Failed to apply annotations", exc_info=True)
def _auto_contrast(img, cutoff=0):
from PIL.ImageOps import autocontrast
from PIL import Image
# Image.fromarray defaultly supports RGB, not BGR.
# convert from BGR to RGB
img = Image.fromarray(img[..., ::-1], mode='RGB')
contrasted_img = autocontrast(img, cutoff)
# convert from RGB to BGR
return np.asarray(contrasted_img)[..., ::-1]
def correct_coords(apps, page: Page, chars: Character) -> None:
PageMultiplier = apps.get_model('calligraphy', 'PageMultiplier')
print(str(page.image))
p_img = grayscale(Image.open(str(page.image)))
mypage = page_dat(page.image_width, page.image_length, p_img, page)
mychars = []
for char in chars:
coords = str(char.image).split('(')[1].split(')')[0].split(',')
charimg = autocontrast(grayscale(Image.open(str(char.image))))
mychars.append(char_dat(coords, charimg, char))
find_search_space(PageMultiplier, mypage, mychars)
def cleaned_contour(image, contrast_cutoff_percent=5, contrast_threshold=200):
contour = image.filter(ImageFilter.CONTOUR)
grey_image = contour.convert("L")
grey_image = ImageOps.invert(grey_image)
grey_image = autocontrast(grey_image, contrast_cutoff_percent)
grey_contours = array(grey_image)
low_indices = grey_contours < contrast_threshold
grey_contours[low_indices] = 0
# Remove edges
grey_contours[:, 0] = 0
grey_contours[:, grey_contours.shape[1] - 1] = 0
grey_contours[0, :] = 0
grey_contours[grey_contours.shape[0] - 1, :] = 0
return grey_contours
def transform(image):
# Grayscale
image = image.convert('L')
# Autocontrast
image = autocontrast(image)
# Resize
size = 127
w, h = image.size
oh = size
ow = int(size * w / h)
image = image.resize((ow, oh), Image.BILINEAR)
# ToTensor
pic = np.array(image)
pic = pic[:, :, None]
pic = pic.transpose((2, 0, 1))
pic = pic.astype(np.float32, copy=False) / 255.0
# unsqueeze
pic = np.expand_dims(pic, axis=0)
return pic
def diff(a, b):
diff = difference(a.image, b.image)
diffNormalized = autocontrast(diff)
return (VideoFrame(diff), VideoFrame(diffNormalized))
def _prepare(self):
bwimg = self.orig.convert("L")
return Contrast(autocontrast(bwimg, 10)).enhance(contrast).point(
self._digitize)
import sys
import subprocess
from ConfigParser import ConfigParser
import numpy as np
# PIL
import Image
from PIL.ImageOps import autocontrast
# Location of files
cfg_file = pjoin(dirname(__file__), 'vinyl.ini')
cfg = ConfigParser()
cfg.read(cfg_file)
img_dir = cfg.get('storage', 'art')
Y = (315, 1515)
X = (58, 1260)
PCT_DROP = 5
for froot in os.listdir(img_dir):
in_fname = pjoin(img_dir, froot)
out_fname = pjoin(img_dir, 'c_' + froot)
img = Image.open(in_fname)
c_img = autocontrast(img, PCT_DROP)
arr = np.array(c_img)
arr = arr[X[0]:X[1], Y[0]:Y[1]]
out_img = Image.fromarray(arr)
out_img.save(out_fname)
def diff(a, b):
diff = difference(a.image, b.image)
diff_normalized = autocontrast(diff)
return (VideoFrame(diff), VideoFrame(diff_normalized))