48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
# -*- coding:utf-8 -*-
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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from __future__ import unicode_literals
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import numpy as np
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import random
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import cv2
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import math
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import imgaug
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import imgaug.augmenters as iaa
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def AugmentData(data):
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img = data['image']
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shape = img.shape
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aug = iaa.Sequential(
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[iaa.Fliplr(0.5), iaa.Affine(rotate=(-10, 10)), iaa.Resize(
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(0.5, 3))]).to_deterministic()
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def may_augment_annotation(aug, data, shape):
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if aug is None:
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return data
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line_polys = []
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for poly in data['polys']:
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new_poly = may_augment_poly(aug, shape, poly)
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line_polys.append(new_poly)
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data['polys'] = np.array(line_polys)
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return data
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def may_augment_poly(aug, img_shape, poly):
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keypoints = [imgaug.Keypoint(p[0], p[1]) for p in poly]
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keypoints = aug.augment_keypoints(
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[imgaug.KeypointsOnImage(
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keypoints, shape=img_shape)])[0].keypoints
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poly = [(p.x, p.y) for p in keypoints]
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return poly
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img_aug = aug.augment_image(img)
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data['image'] = img_aug
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data = may_augment_annotation(aug, data, shape)
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return data
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