def generate(
cls,
index,
text,
font,
out_dir,
size,
extension,
skewing_angle,
random_skew,
blur,
random_blur,
background_type,
distorsion_type,
distorsion_orientation,
is_handwritten,
name_format,
width,
alignment,
text_color,
orientation,
space_width,
character_spacing,
margins,
fit,
output_mask,
):
image = None
margin_top, margin_left, margin_bottom, margin_right = margins
horizontal_margin = margin_left + margin_right
vertical_margin = margin_top + margin_bottom
##########################
# Create picture of text #
##########################
if is_handwritten:
if orientation == 1:
raise ValueError("Vertical handwritten text is unavailable")
image, mask = handwritten_text_generator.generate(text, text_color)
else:
image, mask = computer_text_generator.generate(
text,
font,
text_color,
size,
orientation,
space_width,
character_spacing,
fit,
)
random_angle = rnd.randint(0 - skewing_angle, skewing_angle)
rotated_img = image.rotate(
skewing_angle if not random_skew else random_angle, expand=1
)
rotated_mask = mask.rotate(
skewing_angle if not random_skew else random_angle, expand=1
)
#############################
# Apply distorsion to image #
#############################
if distorsion_type == 0:
distorted_img = rotated_img # Mind = blown
distorted_mask = rotated_mask
elif distorsion_type == 1:
distorted_img, distorted_mask = distorsion_generator.sin(
rotated_img,
rotated_mask,
vertical=(distorsion_orientation == 0 or distorsion_orientation == 2),
horizontal=(distorsion_orientation == 1 or distorsion_orientation == 2),
)
elif distorsion_type == 2:
distorted_img, distorted_mask = distorsion_generator.cos(
rotated_img,
rotated_mask,
vertical=(distorsion_orientation == 0 or distorsion_orientation == 2),
horizontal=(distorsion_orientation == 1 or distorsion_orientation == 2),
)
else:
distorted_img, distorted_mask = distorsion_generator.random(
rotated_img,
rotated_mask,
vertical=(distorsion_orientation == 0 or distorsion_orientation == 2),
horizontal=(distorsion_orientation == 1 or distorsion_orientation == 2),
)
##################################
# Resize image to desired format #
##################################
# Horizontal text
if orientation == 0:
new_width = int(
distorted_img.size[0]
* (float(size - vertical_margin) / float(distorted_img.size[1]))
)
resized_img = distorted_img.resize(
(new_width, size - vertical_margin), Image.ANTIALIAS
)
resized_mask = distorted_mask.resize((new_width, size - vertical_margin))
background_width = width if width > 0 else new_width + horizontal_margin
background_height = size
# Vertical text
elif orientation == 1:
new_height = int(
float(distorted_img.size[1])
* (float(size - horizontal_margin) / float(distorted_img.size[0]))
)
resized_img = distorted_img.resize(
(size - horizontal_margin, new_height), Image.ANTIALIAS
)
resized_mask = distorted_mask.resize(
(size - horizontal_margin, new_height), Image.ANTIALIAS
)
background_width = size
background_height = new_height + vertical_margin
else:
raise ValueError("Invalid orientation")
#############################
# Generate background image #
#############################
if background_type == 0:
background_img = background_generator.gaussian_noise(
background_height, background_width
)
elif background_type == 1:
background_img = background_generator.plain_white(
background_height, background_width
)
elif background_type == 2:
background_img = background_generator.quasicrystal(
background_height, background_width
)
else:
background_img = background_generator.picture(
background_height, background_width
)
background_mask = Image.new("RGB", (background_width, background_height), (0, 0, 0))
#############################
# Place text with alignment #
#############################
new_text_width, _ = resized_img.size
if alignment == 0 or width == -1:
background_img.paste(resized_img, (margin_left, margin_top), resized_img)
background_mask.paste(resized_mask, (margin_left, margin_top))
elif alignment == 1:
background_img.paste(
resized_img,
(int(background_width / 2 - new_text_width / 2), margin_top),
resized_img,
)
background_mask.paste(
resized_mask,
(int(background_width / 2 - new_text_width / 2), margin_top),
)
else:
background_img.paste(
resized_img,
(background_width - new_text_width - margin_right, margin_top),
resized_img,
)
background_mask.paste(
resized_mask,
(background_width - new_text_width - margin_right, margin_top),
)
##################################
# Apply gaussian blur #
##################################
gaussian_filter = ImageFilter.GaussianBlur(
radius=blur if not random_blur else rnd.randint(0, blur)
)
final_image = background_img.filter(gaussian_filter)
final_mask = background_mask.filter(gaussian_filter)
#####################################
# Generate name for resulting image #
#####################################
if name_format == 0:
image_name = "{}_{}.{}".format(text, str(index), extension)
mask_name = "{}_{}_mask.png".format(text, str(index))
elif name_format == 1:
image_name = "{}_{}.{}".format(str(index), text, extension)
mask_name = "{}_{}_mask.png".format(str(index), text)
elif name_format == 2:
image_name = "{}.{}".format(str(index), extension)
mask_name = "{}_mask.png".format(str(index))
else:
print("{} is not a valid name format. Using default.".format(name_format))
image_name = "{}_{}.{}".format(text, str(index), extension)
mask_name = "{}_{}_mask.png".format(text, str(index))
# Save the image
if out_dir is not None:
final_image.convert("RGB").save(os.path.join(out_dir, image_name))
if output_mask == 1:
final_mask.convert("RGB").save(os.path.join(out_dir, mask_name))
else:
if output_mask == 1:
return final_image.convert("RGB"), final_mask.convert("RGB")
return final_image.convert("RGB")
def generate(
cls,
index,
text,
font,
out_dir,
size,
extension,
skewing_angle,
random_skew,
blur,
random_blur,
background_type,
distorsion_type,
distorsion_orientation,
is_handwritten,
name_format,
width,
alignment,
text_color,
orientation,
space_width,
character_spacing=0,
margins=(5, 5, 5, 5),
fit=False,
output_mask=False,
word_split=False,
image_dir=None,
stroke_width=0,
stroke_fill="#282828",
image_mode="RGB",
):
image = None
margin_top, margin_left, margin_bottom, margin_right = margins
horizontal_margin = margin_left + margin_right
vertical_margin = margin_top + margin_bottom
##########################
# Create picture of text #
##########################
image, _, bboxes = generate(
text,
font,
text_color,
size,
orientation,
space_width,
character_spacing,
fit,
word_split,
stroke_width,
stroke_fill,
)
##################################
# Resize image to desired format #
##################################
# Horizontal text
if orientation == 0:
ratio = float(size - vertical_margin) / float(image.size[1])
bboxes = bbox_resize(bboxes, (ratio, ratio))
# ratio_y = size - vertical_margin / size
new_width = int(image.size[0] * ratio)
resized_img = image.resize((new_width, size - vertical_margin),
Image.ANTIALIAS)
background_width = width if width > 0 else new_width + horizontal_margin
background_height = size
# Vertical text
elif orientation == 1:
ratio = (float(size - horizontal_margin) / float(image.size[0]))
bboxes = bbox_resize(bboxes, (ratio, ratio))
new_height = int(float(image.size[1]) * ratio)
resized_img = image.resize((size - horizontal_margin, new_height),
Image.ANTIALIAS)
background_width = size
background_height = new_height + vertical_margin
else:
raise ValueError("Invalid orientation")
#############################
# Generate background image #
#############################
if background_type == 0:
background = background_generator.gaussian_noise(
background_height, background_width)
elif background_type == 1:
background = background_generator.plain_white(
background_height, background_width)
elif background_type == 2:
background = background_generator.quasicrystal(
background_height, background_width)
else:
background = background_generator.picture(background_height,
background_width)
#############################
# Place text with alignment #
#############################
new_text_width, _ = resized_img.size
if alignment == 0 or width == -1:
background.paste(resized_img, (margin_left, margin_top),
resized_img)
bboxes = bbox_margin(bboxes, (margin_left, margin_top))
elif alignment == 1:
background.paste(
resized_img,
(int(background_width / 2 - new_text_width / 2), margin_top),
resized_img,
)
else:
background.paste(
resized_img,
(background_width - new_text_width - margin_right, margin_top),
resized_img,
)
##################################
# Apply gaussian blur #
##################################
final_image = background.filter(
ImageFilter.GaussianBlur(
radius=(blur if not random_blur else rnd.randint(0, blur))))
#####################################
# Generate name for resulting image #
#####################################
if name_format == 0:
image_name = "{}_{}.{}".format(text, str(index), extension)
elif name_format == 1:
image_name = "{}_{}.{}".format(str(index), text, extension)
elif name_format == 2:
image_name = "{}.{}".format(str(index), extension)
else:
print("{} is not a valid name format. Using default.".format(
name_format))
image_name = "{}_{}.{}".format(text, str(index), extension)
# Save the image
if out_dir is not None:
final_image.convert("RGB").save(os.path.join(out_dir, image_name))
else:
return final_image.convert("RGB"), bboxes
