def check_input_image_and_label(image_path, label_path):
"""
check the input image and label, they should have same width, height, and projection
:param image_path: the path of image
:param label_path: the path of label
:return: (width, height) of image if successful, Otherwise (None, None).
"""
img_obj = RSImageclass()
if img_obj.open(image_path) is False:
assert False
label_obj = RSImageclass()
if label_obj.open(label_path) is False:
assert False
# check width and height
width = img_obj.GetWidth()
height = img_obj.GetHeight()
if width != label_obj.GetWidth() or height != label_obj.GetHeight():
basic.outputlogMessage("Error, not the same width and height of image (%s) and label (%s)"%(image_path,label_path))
assert False
# check resolution
if img_obj.GetXresolution() != label_obj.GetXresolution() or img_obj.GetYresolution() != label_obj.GetYresolution():
basic.outputlogMessage(
"Error, not the same resolution of image (%s) and label (%s)" % (image_path, label_path))
assert False
# check projection
if img_obj.GetProjection() != label_obj.GetProjection():
basic.outputlogMessage(
"warning, not the same projection of image (%s) and label (%s)" % (image_path, label_path))
# assert False
return (width, height)
def get_area(img_path):
valid_pixel_count = RSImage.get_valid_pixel_count(img_path)
# get resolution
img_obj = RSImageclass()
if img_obj.open(img_path) is False:
return False
res_x = img_obj.GetXresolution()
res_y = img_obj.GetYresolution()
area = abs(res_x*res_y*valid_pixel_count)/pow(10,6)
return area
