我想将每个像素的高光谱数据加载到一个数组中,并使用 Python 3.5 再次写出这个像素。我想用这个像素的光谱信息计算一些东西。
我尝试了两种不同的方法,但都没有按照我想要的方式工作。
首先,我已经更新了光谱包,因为最后一个版本被声明不能迭代地使用 envi.save_image,但我的方法仍然不起作用。其次,我的方法对于我的双重 for 循环都不是很好 - 我知道 - 如果有人可以帮助我解决我的问题。
第一个:
myfile=open_image('input.hdr')
for i in range(0,myfile.shape[0]):
for j in range(0,myfile.shape[1]):
mypixel = (myfile.read_pixel(i,j))
envi.save_image('output.hdr', mypixel, dtype=np.int16)
第一个示例不保存图像,而是给了我错误代码
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.5/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 699, in runfile
execfile(filename, namespace)
File "/usr/local/lib/python3.5/site-packages/spyderlib/widgets/externalshell/sitecustomize.py", line 88, in execfile
exec(compile(open(filename, 'rb').read(), filename, 'exec'), namespace)
File "/dtc/Python/Masking.py", line 132, in <module>
envi.save_image('test.hdr', mypixel, dtype=np.int16)#, metadata=myfile.metadata)
File "/usr/local/lib/python3.5/site-packages/spectral/io/envi.py", line 415, in save_image
data, metadata = _prepared_data_and_metadata(hdr_file, image, **kwargs)
File "/usr/local/lib/python3.5/site-packages/spectral/io/envi.py", line 568, in _prepared_data_and_metadata
add_image_info_to_metadata(image, metadata)
File "/usr/local/lib/python3.5/site-packages/spectral/io/envi.py", line 613, in add_image_info_to_metadata
metadata['samples'] = image.shape[1]
IndexError: tuple index out of range
第二:
myfile=open_image('input.hdr')
envi.create_image('test.hdr',ext='.bip', interleave='bip',dtype='h',force=True,metadata=myfile.metadata)
open('test.bip', 'w').close() # empties the created file
file = open('test.bip', 'ab')#ab #opens the created file for appending the new bands
for i in range(0,myfile.shape[0]):
for j in range(0,myfile.shape[1]):
mypixel = (myfile.read_pixel(i,j))
file.write(mypixel)
file.close()
myfile.close()
第二个示例保存图像,但以不同的顺序存储像素并弄乱我的图像。