aleju--imgaug
wehub-resource-sync
93 行
3.6 KiB
Python
93 行
3.6 KiB
Python
from __future__ import print_function, division
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import imgaug as ia
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from imgaug import augmenters as iaa
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import imageio
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import numpy as np
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from skimage import data
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import cv2
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NB_ROWS = 10
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NB_COLS = 10
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HEIGHT = 200
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WIDTH = 256
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BB_X1 = 64
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BB_X2 = WIDTH - 64
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BB_Y1 = 64
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BB_Y2 = HEIGHT - 64
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def main():
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image = data.astronaut()
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image = ia.imresize_single_image(image, (HEIGHT, WIDTH))
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kps = []
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for y in range(NB_ROWS):
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ycoord = BB_Y1 + int(y * (BB_Y2 - BB_Y1) / (NB_COLS - 1))
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for x in range(NB_COLS):
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xcoord = BB_X1 + int(x * (BB_X2 - BB_X1) / (NB_ROWS - 1))
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kp = (xcoord, ycoord)
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kps.append(kp)
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kps = set(kps)
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kps = [ia.Keypoint(x=xcoord, y=ycoord) for (xcoord, ycoord) in kps]
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kps = ia.KeypointsOnImage(kps, shape=image.shape)
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bb = ia.BoundingBox(x1=BB_X1, x2=BB_X2, y1=BB_Y1, y2=BB_Y2)
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bbs = ia.BoundingBoxesOnImage([bb], shape=image.shape)
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pairs = []
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seqs = [
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iaa.AffineCv2(rotate=45),
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iaa.AffineCv2(translate_px=20),
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iaa.AffineCv2(translate_percent=0.1),
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iaa.AffineCv2(scale=1.2),
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iaa.AffineCv2(scale=0.8),
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iaa.AffineCv2(shear=45),
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iaa.AffineCv2(rotate=45, cval=256),
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iaa.AffineCv2(translate_px=20, mode=cv2.BORDER_CONSTANT),
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iaa.AffineCv2(translate_px=20, mode=cv2.BORDER_REPLICATE),
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iaa.AffineCv2(translate_px=20, mode=cv2.BORDER_REFLECT),
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iaa.AffineCv2(translate_px=20, mode=cv2.BORDER_REFLECT_101),
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iaa.AffineCv2(translate_px=20, mode=cv2.BORDER_WRAP),
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iaa.AffineCv2(translate_px=20, mode="constant"),
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iaa.AffineCv2(translate_px=20, mode="replicate"),
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iaa.AffineCv2(translate_px=20, mode="reflect"),
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iaa.AffineCv2(translate_px=20, mode="reflect_101"),
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iaa.AffineCv2(translate_px=20, mode="wrap"),
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iaa.AffineCv2(scale=0.5, order=cv2.INTER_NEAREST),
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iaa.AffineCv2(scale=0.5, order=cv2.INTER_LINEAR),
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iaa.AffineCv2(scale=0.5, order=cv2.INTER_CUBIC),
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iaa.AffineCv2(scale=0.5, order=cv2.INTER_LANCZOS4),
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iaa.AffineCv2(scale=0.5, order="nearest"),
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iaa.AffineCv2(scale=0.5, order="linear"),
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iaa.AffineCv2(scale=0.5, order="cubic"),
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iaa.AffineCv2(scale=0.5, order="lanczos4"),
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iaa.AffineCv2(rotate=45, translate_px=20, scale=1.2),
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iaa.AffineCv2(rotate=45, translate_px=20, scale=0.8),
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iaa.AffineCv2(rotate=(-45, 45), translate_px=(-20, 20), scale=(0.8, 1.2), order=ia.ALL, mode=ia.ALL, cval=ia.ALL),
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iaa.AffineCv2(rotate=(-45, 45), translate_px=(-20, 20), scale=(0.8, 1.2), order=ia.ALL, mode=ia.ALL, cval=ia.ALL),
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iaa.AffineCv2(rotate=(-45, 45), translate_px=(-20, 20), scale=(0.8, 1.2), order=ia.ALL, mode=ia.ALL, cval=ia.ALL),
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iaa.AffineCv2(rotate=(-45, 45), translate_px=(-20, 20), scale=(0.8, 1.2), order=ia.ALL, mode=ia.ALL, cval=ia.ALL)
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]
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for seq in seqs:
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seq_det = seq.to_deterministic()
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image_aug = seq_det.augment_image(image)
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#print(image_aug.dtype, np.min(image_aug), np.max(image_aug))
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kps_aug = seq_det.augment_keypoints([kps])[0]
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bbs_aug = seq_det.augment_bounding_boxes([bbs])[0]
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image_before = np.copy(image)
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image_before = kps.draw_on_image(image_before)
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image_before = bbs.draw_on_image(image_before)
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image_after = np.copy(image_aug)
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image_after = kps_aug.draw_on_image(image_after)
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image_after = bbs_aug.draw_on_image(image_after)
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pairs.append(np.hstack((image_before, image_after)))
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ia.imshow(np.vstack(pairs))
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imageio.imwrite("affinecv2.jpg", np.vstack(pairs))
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if __name__ == "__main__":
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main()
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