回答編集履歴
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d
test
CHANGED
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@@ -83,3 +83,53 @@
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83
83
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84
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出力
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86
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87
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88
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89
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## 追記
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90
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91
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92
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93
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ちなみに画像を左右反転、上下反転させる行列は以下です。
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94
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95
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```python
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98
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import cv2
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import numpy as np
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102
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103
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104
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105
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img = cv2.imread("sample.jpg")
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106
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107
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h, w, c = img.shape
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108
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109
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110
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111
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# 左右反転
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112
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113
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invert_x = np.array([[-1.0, 0.0, w],
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114
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[0.0, 1.0, 0]])
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116
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# 上下反転
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118
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119
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invert_y = np.array([[1.0, 0.0, 0.0],
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120
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[0.0, -1.0, h]])
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122
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123
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124
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dst = cv2.warpAffine(img, invert_x, dsize=(w, h))
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cv2.imwrite("invert_x.png", dst)
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dst = cv2.warpAffine(img, invert_y, dsize=(w, h))
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cv2.imwrite("invert_y.png", dst)
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```
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