197 lines
6.2 KiB
Python
197 lines
6.2 KiB
Python
# -*- coding: UTF-8 -*-
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"""
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@Project:__init__.py
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@File:DualPolarToPolsarproC2.py
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@Function:双极化影像转成polsarpro格式C2数据
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@Contact:
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@Author:SHJ
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@Date:2021/11/5
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@Version:1.0.0
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"""
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import os
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import numpy as np
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import glob
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import struct
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import gc
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from tool.algorithm.image.ImageHandle import ImageHandler
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class DualPolarToPolsarproC2:
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"""
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双极化影像转换为bin格式C2矩阵，支持polsarpro处理
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"""
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def __init__(self):
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pass
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@staticmethod
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def __dual_polar_to_c2(dual_polar_dir):
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"""
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双影像转S2矩阵
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:param dual_polar_dir: 双极化影像文件夹路径
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:return: C2矩阵
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"""
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in_tif_paths = list(glob.glob(os.path.join(dual_polar_dir, '*.tif')))
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if in_tif_paths == []:
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in_tif_paths = list(glob.glob(os.path.join(dual_polar_dir, '*.tiff')))
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s11, s22 = None, None
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flag_list = [0, 0, 0, 0]
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for in_tif_path in in_tif_paths:
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# 读取原始SAR影像
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proj, geotrans, data = ImageHandler.read_img(in_tif_path)
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# 获取极化类型
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if 'HH' in os.path.basename(in_tif_path):
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s11 = data[0, :, :] + 1j * data[1, :, :]
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flag_list[0] = 1
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elif 'HV' in os.path.basename(in_tif_path):
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s22 = data[0, :, :] + 1j * data[1, :, :]
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flag_list[1] = 1
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elif 'VH' in os.path.basename(in_tif_path):
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s22 = data[0, :, :] + 1j * data[1, :, :]
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flag_list[2] = 1
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elif 'VV' in os.path.basename(in_tif_path):
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s11 = data[0, :, :] + 1j * data[1, :, :]
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flag_list[3] = 1
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else:
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continue
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del data
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gc.collect()
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if flag_list != [1, 1, 0, 0] and flag_list != [0, 0, 1, 1] :
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raise Exception('Dual-Polarization SAR is not in path :%s',in_tif_path)
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c11,c12,c22 = None, None, None
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c11 = np.abs(s11)** 2
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c12 = s11 * np.conj(s22)
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del s11
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gc.collect()
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c22 = np.abs(s22)**2
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return c11, c12, c22
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def __c2_to_polsarpro_c2(self, out_dir, c11, c12, c22):
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"""
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C2矩阵转bin格式，支持 polsarpro处理
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:param out_dir: 输出的文件夹路径
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:param c11:
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:param c12:
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:param c21:
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:param c22:
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:return: bin格式矩阵C3和头文件
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"""
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if not os.path.exists(out_dir):
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os.makedirs(out_dir)
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rows = c11.shape[0]
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cols = c11.shape[1]
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bins_dict = {
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'C11.bin': c11,
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'C12_real.bin': c12.real,
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'C12_imag.bin': c12.imag,
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'C22.bin': c22}
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for name, data in bins_dict.items():
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bin_path = os.path.join(out_dir, name)
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self.__write_img_bin(data, bin_path)
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out_hdr_path = bin_path + '.hdr'
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self.__write_bin_hdr(out_hdr_path, bin_path, rows, cols)
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self.__write_config_file(out_dir, rows, cols)
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def rows(self):
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"""获取影像行数"""
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return self._rows
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def cols(self):
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"""获取影像列数"""
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return self._cols
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def __write_img_bin(self, im, file_path):
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"""
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写入影像到bin文件中，保存为float32类型
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:param im : 影像矩阵数据，暂支持单通道影像数据
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:param file_path: bin文件的完整路径
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"""
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with open(file_path, 'wb') as f:
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self._rows = im.shape[0]
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self._cols = im.shape[1]
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for row in range(self._rows):
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im_bin = struct.pack("f" * self._cols, *np.reshape(im[row, :], (self._cols, 1), order='F'))
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f.write(im_bin)
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f.close()
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@staticmethod
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def __write_bin_hdr(out_hdr_path, bin_path, rows, cols):
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"""
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写入影像的头文件
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:param out_hdr_path : 头文件的路径
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:param bin_path: bin文件的路径
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:param rows: 影像的行数
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:param cols: 影像的列数
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"""
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name = os.path.split(bin_path)[1]
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h1 = 'ENVI'
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h2 = 'description = {'
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h3 = 'File Imported into ENVI. }'
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h4 = 'samples = ' + str(cols) # 列
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h5 = 'lines = ' + str(rows) # 行
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h6 = 'bands = 1 ' # 波段数
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h7 = 'header offset = 0'
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h8 = 'file type = ENVI Standard'
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h9 = 'data type = 4' # 数据格式 浮点型
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h10 = 'interleave = bsq' # 存储格式
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h11 = 'sensor type = Unknown'
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h12 = 'byte order = 0'
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h13 = 'band names = {'
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h14 = name + '}'
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h = [h1, h2, h3, h4, h5, h6, h7, h8, h9, h10, h11, h12, h13, h14]
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doc = open(out_hdr_path, 'w')
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for i in range(0, 14):
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print(h[i], end='', file=doc)
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print('\n', end='', file=doc)
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doc.close()
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@staticmethod
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def __write_config_file(out_config_dir, rows, cols):
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"""
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写入polsarpro配置文件
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:param out_config_dir : 配置文件路径
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:param rows: 影像的行数
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:param cols: 影像的列数
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"""
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h1 = 'Nrow'
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h2 = str(rows)
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h3 = '---------'
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h4 = 'Ncol'
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h5 = str(cols)
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h6 = '---------'
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h7 = 'PolarCase'
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h8 = 'monostatic'
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h9 = '---------'
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h10 = 'PolarType'
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h11 = 'pp1'
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h = [h1, h2, h3, h4, h5, h6, h7, h8, h9, h10, h11]
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out_config_path = os.path.join(out_config_dir, 'config.txt')
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doc = open(out_config_path, 'w')
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for i in range(0, 11):
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print(h[i], end='', file=doc)
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print('\n', end='', file=doc)
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doc.close()
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def api_dual_polar__to_polsarpro_c2(self, out_file_dir, dual_polar_dir):
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c11, c12, c22 = self.__dual_polar_to_c2(dual_polar_dir)
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self.__c2_to_polsarpro_c2(out_file_dir,c11, c12, c22)
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# if __name__ == '__main__':
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# tp = DualPolarToPolsarproC2()
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# out_dic = 'E:\\3-GF3_KAS_FSI_020253_E110.8_N25.5_20200614_L1A_HHHV_L10004871459\\SLC_SHJ1'
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# in_dic = 'E:\\3-GF3_KAS_FSI_020253_E110.8_N25.5_20200614_L1A_HHHV_L10004871459\\'
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# # out_file_path = 'D:\\bintest0923\\'
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# tp.api_dual_polar__to_polsarpro_c2(out_dic,in_dic)
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# # atp.ahv_to_polsarpro_t3(out_file_path, ahv_path)
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#
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# print("done")
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