|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| import argparse
|
| import math
|
| import cv2
|
| import glob
|
| import os
|
| from anime_face_detector import create_detector
|
| from tqdm import tqdm
|
| import numpy as np
|
|
|
| KP_REYE = 11
|
| KP_LEYE = 19
|
|
|
| SCORE_THRES = 0.90
|
|
|
|
|
| def detect_faces(detector, image, min_size):
|
| preds = detector(image)
|
|
|
|
|
| faces = []
|
| for pred in preds:
|
| bb = pred['bbox']
|
| score = bb[-1]
|
| if score < SCORE_THRES:
|
| continue
|
|
|
| left, top, right, bottom = bb[:4]
|
| cx = int((left + right) / 2)
|
| cy = int((top + bottom) / 2)
|
| fw = int(right - left)
|
| fh = int(bottom - top)
|
|
|
| lex, ley = pred['keypoints'][KP_LEYE, 0:2]
|
| rex, rey = pred['keypoints'][KP_REYE, 0:2]
|
| angle = math.atan2(ley - rey, lex - rex)
|
| angle = angle / math.pi * 180
|
|
|
| faces.append((cx, cy, fw, fh, angle))
|
|
|
| faces.sort(key=lambda x: max(x[2], x[3]), reverse=True)
|
| return faces
|
|
|
|
|
| def rotate_image(image, angle, cx, cy):
|
| h, w = image.shape[0:2]
|
| rot_mat = cv2.getRotationMatrix2D((cx, cy), angle, 1.0)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| result = cv2.warpAffine(image, rot_mat, (w, h), flags=cv2.INTER_LINEAR, borderMode=cv2.BORDER_REFLECT)
|
| return result, cx, cy
|
|
|
|
|
| def process(args):
|
| assert (not args.resize_fit) or args.resize_face_size is None, f"resize_fit and resize_face_size can't be specified both / resize_fitとresize_face_sizeはどちらか片方しか指定できません"
|
| assert args.crop_ratio is None or args.resize_face_size is None, f"crop_ratio指定時はresize_face_sizeは指定できません"
|
|
|
|
|
| print("loading face detector.")
|
| detector = create_detector('yolov3')
|
|
|
|
|
| if args.crop_size is None:
|
| crop_width = crop_height = None
|
| else:
|
| tokens = args.crop_size.split(',')
|
| assert len(tokens) == 2, f"crop_size must be 'width,height' / crop_sizeは'幅,高さ'で指定してください"
|
| crop_width, crop_height = [int(t) for t in tokens]
|
|
|
| if args.crop_ratio is None:
|
| crop_h_ratio = crop_v_ratio = None
|
| else:
|
| tokens = args.crop_ratio.split(',')
|
| assert len(tokens) == 2, f"crop_ratio must be 'horizontal,vertical' / crop_ratioは'幅,高さ'の倍率で指定してください"
|
| crop_h_ratio, crop_v_ratio = [float(t) for t in tokens]
|
|
|
|
|
| print("processing.")
|
| output_extension = ".png"
|
|
|
| os.makedirs(args.dst_dir, exist_ok=True)
|
| paths = glob.glob(os.path.join(args.src_dir, "*.png")) + glob.glob(os.path.join(args.src_dir, "*.jpg")) + \
|
| glob.glob(os.path.join(args.src_dir, "*.webp"))
|
| for path in tqdm(paths):
|
| basename = os.path.splitext(os.path.basename(path))[0]
|
|
|
|
|
| image = cv2.imdecode(np.fromfile(path, np.uint8), cv2.IMREAD_UNCHANGED)
|
| if len(image.shape) == 2:
|
| image = cv2.cvtColor(image, cv2.COLOR_GRAY2BGR)
|
| if image.shape[2] == 4:
|
| print(f"image has alpha. ignore / 画像の透明度が設定されているため無視します: {path}")
|
| image = image[:, :, :3].copy()
|
|
|
| h, w = image.shape[:2]
|
|
|
| faces = detect_faces(detector, image, args.multiple_faces)
|
| for i, face in enumerate(faces):
|
| cx, cy, fw, fh, angle = face
|
| face_size = max(fw, fh)
|
| if args.min_size is not None and face_size < args.min_size:
|
| continue
|
| if args.max_size is not None and face_size >= args.max_size:
|
| continue
|
| face_suffix = f"_{i+1:02d}" if args.multiple_faces else ""
|
|
|
|
|
| face_img = image
|
| if args.rotate:
|
| face_img, cx, cy = rotate_image(face_img, angle, cx, cy)
|
|
|
|
|
| if crop_width is not None or crop_h_ratio is not None:
|
| cur_crop_width, cur_crop_height = crop_width, crop_height
|
| if crop_h_ratio is not None:
|
| cur_crop_width = int(face_size * crop_h_ratio + .5)
|
| cur_crop_height = int(face_size * crop_v_ratio + .5)
|
|
|
|
|
| scale = 1.0
|
| if args.resize_face_size is not None:
|
|
|
| scale = args.resize_face_size / face_size
|
| if scale < cur_crop_width / w:
|
| print(
|
| f"image width too small in face size based resizing / 顔を基準にリサイズすると画像の幅がcrop sizeより小さい(顔が相対的に大きすぎる)ので顔サイズが変わります: {path}")
|
| scale = cur_crop_width / w
|
| if scale < cur_crop_height / h:
|
| print(
|
| f"image height too small in face size based resizing / 顔を基準にリサイズすると画像の高さがcrop sizeより小さい(顔が相対的に大きすぎる)ので顔サイズが変わります: {path}")
|
| scale = cur_crop_height / h
|
| elif crop_h_ratio is not None:
|
|
|
| pass
|
| else:
|
|
|
| if w < cur_crop_width:
|
| print(f"image width too small/ 画像の幅がcrop sizeより小さいので画質が劣化します: {path}")
|
| scale = cur_crop_width / w
|
| if h < cur_crop_height:
|
| print(f"image height too small/ 画像の高さがcrop sizeより小さいので画質が劣化します: {path}")
|
| scale = cur_crop_height / h
|
| if args.resize_fit:
|
| scale = max(cur_crop_width / w, cur_crop_height / h)
|
|
|
| if scale != 1.0:
|
| w = int(w * scale + .5)
|
| h = int(h * scale + .5)
|
| face_img = cv2.resize(face_img, (w, h), interpolation=cv2.INTER_AREA if scale < 1.0 else cv2.INTER_LANCZOS4)
|
| cx = int(cx * scale + .5)
|
| cy = int(cy * scale + .5)
|
| fw = int(fw * scale + .5)
|
| fh = int(fh * scale + .5)
|
|
|
| cur_crop_width = min(cur_crop_width, face_img.shape[1])
|
| cur_crop_height = min(cur_crop_height, face_img.shape[0])
|
|
|
| x = cx - cur_crop_width // 2
|
| cx = cur_crop_width // 2
|
| if x < 0:
|
| cx = cx + x
|
| x = 0
|
| elif x + cur_crop_width > w:
|
| cx = cx + (x + cur_crop_width - w)
|
| x = w - cur_crop_width
|
| face_img = face_img[:, x:x+cur_crop_width]
|
|
|
| y = cy - cur_crop_height // 2
|
| cy = cur_crop_height // 2
|
| if y < 0:
|
| cy = cy + y
|
| y = 0
|
| elif y + cur_crop_height > h:
|
| cy = cy + (y + cur_crop_height - h)
|
| y = h - cur_crop_height
|
| face_img = face_img[y:y + cur_crop_height]
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| if args.debug:
|
| cv2.rectangle(face_img, (cx-fw//2, cy-fh//2), (cx+fw//2, cy+fh//2), (255, 0, 255), fw//20)
|
|
|
| _, buf = cv2.imencode(output_extension, face_img)
|
| with open(os.path.join(args.dst_dir, f"{basename}{face_suffix}_{cx:04d}_{cy:04d}_{fw:04d}_{fh:04d}{output_extension}"), "wb") as f:
|
| buf.tofile(f)
|
|
|
|
|
| def setup_parser() -> argparse.ArgumentParser:
|
| parser = argparse.ArgumentParser()
|
| parser.add_argument("--src_dir", type=str, help="directory to load images / 画像を読み込むディレクトリ")
|
| parser.add_argument("--dst_dir", type=str, help="directory to save images / 画像を保存するディレクトリ")
|
| parser.add_argument("--rotate", action="store_true", help="rotate images to align faces / 顔が正立するように画像を回転する")
|
| parser.add_argument("--resize_fit", action="store_true",
|
| help="resize to fit smaller side after cropping / 切り出し後の画像の短辺がcrop_sizeにあうようにリサイズする")
|
| parser.add_argument("--resize_face_size", type=int, default=None,
|
| help="resize image before cropping by face size / 切り出し前に顔がこのサイズになるようにリサイズする")
|
| parser.add_argument("--crop_size", type=str, default=None,
|
| help="crop images with 'width,height' pixels, face centered / 顔を中心として'幅,高さ'のサイズで切り出す")
|
| parser.add_argument("--crop_ratio", type=str, default=None,
|
| help="crop images with 'horizontal,vertical' ratio to face, face centered / 顔を中心として顔サイズの'幅倍率,高さ倍率'のサイズで切り出す")
|
| parser.add_argument("--min_size", type=int, default=None,
|
| help="minimum face size to output (included) / 処理対象とする顔の最小サイズ(この値以上)")
|
| parser.add_argument("--max_size", type=int, default=None,
|
| help="maximum face size to output (excluded) / 処理対象とする顔の最大サイズ(この値未満)")
|
| parser.add_argument("--multiple_faces", action="store_true",
|
| help="output each faces / 複数の顔が見つかった場合、それぞれを切り出す")
|
| parser.add_argument("--debug", action="store_true", help="render rect for face / 処理後画像の顔位置に矩形を描画します")
|
|
|
| return parser
|
|
|
|
|
| if __name__ == '__main__':
|
| parser = setup_parser()
|
|
|
| args = parser.parse_args()
|
|
|
| process(args)
|
|
|