Python遥感图像处理应用篇(二十)：Python+GDAL 批量提取多波段图像为单波段图像

批量将多波段图像提取为各个单波段图像

运行环境：windows10  pycharm  python3.7.7  GDAL-3.2.3-cp37-cp37m-win_amd64.whl包等。

"""
此段代码将遥感图像背景值去除处理
"""
import numpy as np
from osgeo import gdal, gdalconst
import os

#将遥感影像归一化处理 写成函数
def GetEnvolopePoint(inputpath,output_filepath):
    gdal.UseExceptions()
    ds = gdal.Open(inputpath)
    band01 = ds.GetRasterBand(1)
    im_width, im_height = band01.XSize, band01.YSize
    print(inputpath,"影像大小为：",im_width, im_height)
    dim_z = ds.RasterCount  #图像通道数
    if dim_z>5:
        dim_z=5 #只提取前5个波段
    for i in range(1, dim_z + 1):
        band = ds.GetRasterBand(i)
        band_array = band.ReadAsArray()
        print("Image Shape:", band_array.shape)