import geo_rpc
import os
import numpy as np

from osgeo import gdal
rpc = geo_rpc.read_rpc_file(r'D:\MicroSAR\C-SAR\Ortho\Temporary\unpack\GF3B_MYC_FSI_002233_E120.8_N30.2_20220426_L1A_VHVV_L10000030053\GF3B_MYC_FSI_002233_E120.8_N30.2_20220426_L1A_VV_L10000030053.rpb')
rows ,cols = rpc.localization(19820,14284,0)      
print(rows,cols)