如何将.TIF转换为GeoTiFF

Question

我正在使用一个函数下载谷歌地图图像，给定该地区的经纬度。我可以设法将下载图像的格式更改为jpeg、png或tiff，但我想将图像保存为Geotiff，以保留空间信息。有办法做到这一点吗？就像输入现有的图像，然后输入我想要转换的格式。这是代码

def __init__(self, lat, lng, zoom=12, layer='s'):
self._lat = lat
self._lng = lng
self._zoom = zoom
self._layer = layer
def getXY(self):

tile_size = 256
numTiles = 2 << self._zoom
# Find the x_point given the longitude
point_x = (tile_size / 2 + self._lng * tile_size / 360.0) * numTiles // tile_size
# Convert the latitude to radians and take the sine
sin_y = math.sin(self._lat * (math.pi / 180.0))
# Calulate the y coorindate
point_y = ((tile_size / 2) + 0.5 * math.log((1 + sin_y) / (1 - sin_y)) * -(
tile_size / (2 * math.pi))) * numTiles // tile_size
return int(point_x), int(point_y)
def generateTiles(self, **kwargs):

start_x = kwargs.get('start_x', None)
start_y = kwargs.get('start_y', None)
tile_width = kwargs.get('tile_width', 5)
tile_height = kwargs.get('tile_height', 5)
# Check that we have x and y tile coordinates
if start_x == None or start_y == None:
start_x, start_y = self.getXY()
# Determine the size of the image
width, height = 256 * tile_width, 256 * tile_height
# Create a new image of the size require
map_img = Image.new('RGB', (width, height))
for x in range(0, tile_width):
for y in range(0, tile_height):
url = f'https://mt0.google.com/vt?lyrs={self._layer}&x=' + str(start_x + x) + '&y=' + str(start_y + y) + '&z=' + str(self._zoom)
current_tile = str(x) + '-' + str(y)
urllib.request.urlretrieve(url, current_tile)
im = Image.open(current_tile)
map_img.paste(im, (x * 256, y * 256))
os.remove(current_tile) 

current_tile = str(x) + '-' + str(y)
urllib.request.urlretrieve(url, current_tile)
im = Image.open(current_tile)
map_img.paste(im, (x * 256, y * 256))
os.remove(current_tile)
return map_img
def main():
gmd = ImagesDownloader(lat, lon, 15, layer ='s')
print("The tile coorindates are {}".format(gmd.getXY()))
try:
# Get the high resolution image
img = gmd.generateTiles()
except IOError:
print("Could not generate the image - try adjusting the zoom level and checking your coordinates")
else:
# Save the image to disk
img.save("high_resolution_image.tif")
print("The map has successfully been created")

if __name__ == '__main__':  main()

Answer 1

我建议使用GDAL创建GeoTiff。如果您正在使用Python绑定，那么它是可用的。https://gdal.org/api/python.html您可能需要检查地图服务的使用条款，通常不允许导出和保存图像。