[英]How to find coordinate of a rotated bounding box in Python?
I have a rotated rectangular as 我有一个旋转的矩形
It contains the values 255
for rectangular and 0
for background. 它包含矩形值255
和背景值0
。 I want to find a bounding box coordinate (x_min,x_max, y_min,y_max)
(such as red box as bellow). 我想找到一个边界框坐标(x_min,x_max, y_min,y_max)
(例如下面的红色框)。 Could you suggest to me the way to find it in python? 您能建议我在python中找到它的方法吗? Thanks 谢谢
This is the way how can I obtained the rotated bounding box 这是我如何获得旋转的边界框的方法
import numpy as np
import skimage.transform
import Image
img = np.zeros([2088,1773], dtype=np.uint8)
img[386:575, 816:1000] = 255
img =skimage.transform.rotate(img, -20, mode='edge')
img=img*255
img = Image.fromarray(img)
if img.mode != 'RGB':
img = img.convert('RGB')
img.save("rotated_bb.jpg")
This should work: 这应该工作:
import numpy as np
import skimage.transform
img = np.zeros([2088,1773], dtype=np.uint8)
img[386:575, 816:1000] = 255
img = skimage.transform.rotate(img, -20, mode='edge')
rect = np.where(img==1)
xmin, xmax = rect[1].min(), rect[1].max()
ymin, ymax = rect[0].min(), rect[0].max()
just need to adapt it to RGB format if you really need to... 如果确实需要,只需将其调整为RGB格式即可。
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