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Running
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Zero
File size: 4,378 Bytes
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import cv2
import numpy as np
from PIL import Image
from scripts.anime import generate_sketch
def pad64(x):
return int(np.ceil(float(x) / 64.0) * 64 - x)
def HWC3(x):
assert x.dtype == np.uint8
if x.ndim == 2:
x = x[:, :, None]
assert x.ndim == 3
H, W, C = x.shape
assert C == 1 or C == 3 or C == 4
if C == 3:
return x
if C == 1:
return np.concatenate([x, x, x], axis=2)
if C == 4:
color = x[:, :, 0:3].astype(np.float32)
alpha = x[:, :, 3:4].astype(np.float32) / 255.0
y = color * alpha + 255.0 * (1.0 - alpha)
y = y.clip(0, 255).astype(np.uint8)
return y
def safer_memory(x):
# Fix many MAC/AMD problems
return np.ascontiguousarray(x.copy()).copy()
def resize_image_with_pad(input_image, resolution, skip_hwc3=False):
if skip_hwc3:
img = input_image
else:
img = HWC3(input_image)
H_raw, W_raw, _ = img.shape
k = float(resolution) / float(min(H_raw, W_raw))
interpolation = cv2.INTER_CUBIC if k > 1 else cv2.INTER_AREA
H_target = int(np.round(float(H_raw) * k))
W_target = int(np.round(float(W_raw) * k))
img = cv2.resize(img, (W_target, H_target), interpolation=interpolation)
H_pad, W_pad = pad64(H_target), pad64(W_target)
img_padded = np.pad(img, [[0, H_pad], [0, W_pad], [0, 0]], mode='edge')
def remove_pad(x):
return safer_memory(x[:H_target, :W_target])
return safer_memory(img_padded), remove_pad
def scribble_xdog(img, res=512, thr_a=32, **kwargs):
"""
XDoGを使ってスケッチ画像を生成する
:param img: np.ndarray, 入力画像
:param res: int, 出力画像の解像度
:param thr_a: int, 閾値
Returns
-------
Image : PIL.Image
"""
img, remove_pad = resize_image_with_pad(img, res)
g1 = cv2.GaussianBlur(img.astype(np.float32), (0, 0), 0.5)
g2 = cv2.GaussianBlur(img.astype(np.float32), (0, 0), 5.0)
dog = (255 - np.min(g2 - g1, axis=2)).clip(0, 255).astype(np.uint8)
result = np.zeros_like(img, dtype=np.uint8)
result[2 * (255 - dog) > thr_a] = 255
result = Image.fromarray(remove_pad(result))
return result, True
def canny(img, res=512, thr_a=100, thr_b=200, **kwargs):
img, remove_pad = resize_image_with_pad(img, res)
result = cv2.Canny(img, thr_a, thr_b)
result = Image.fromarray(remove_pad(result))
return result, True
def get_sketch(image, method='scribble_xdog', res=2048, thr=20, **kwargs):
# image: np.ndarray
input_height = image.shape[0]
input_width = image.shape[1]
if method == 'scribble_xdog':
processed_image, _ = scribble_xdog(image, res, thr) # PIL.Image
processed_image = processed_image.resize((input_width, input_height))
# make PIL.Image to cv2 and INVERSE
processed_image = cv2.cvtColor(np.array(processed_image), cv2.COLOR_RGB2BGR)
processed_image = 255 - processed_image
processed_image = Image.fromarray(processed_image)
elif method == 'anime2sketch':
clahe = 1.0
processed_image = generate_sketch(image, clahe_clip=clahe, load_size=1024) # output: numpy.ndarray
processed_image = Image.fromarray(processed_image)
# processed_image.save(output_path.split('.')[0] + f'_{clahe}.png')
elif method == 'both':
alpha = 0.5
# 2枚をalphaの重みで合成
scribble_xdog_processed_image, _ = scribble_xdog(image, res, thr)
scribble_xdog_processed_image = scribble_xdog_processed_image.resize((input_width, input_height))
scribble_xdog_processed_image = cv2.cvtColor(np.array(scribble_xdog_processed_image), cv2.COLOR_RGB2BGR)
scribble_xdog_processed_image = 255 - scribble_xdog_processed_image
anime2sketch_processed_image = generate_sketch(image, clahe_clip=1.0, load_size=1024)
anime2sketch_processed_image = Image.fromarray(anime2sketch_processed_image)
anime2sketch_processed_image = anime2sketch_processed_image.resize((input_width, input_height))
anime2sketch_processed_image = cv2.cvtColor(np.array(anime2sketch_processed_image), cv2.COLOR_RGB2BGR)
processed_image = cv2.addWeighted(scribble_xdog_processed_image, alpha, anime2sketch_processed_image, 1-alpha, 0)
processed_image = Image.fromarray(processed_image)
return processed_image
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