Files
BRDF/Flexbrdf/scripts/trait_estimate_nc.py
2026-04-10 16:46:45 +08:00

269 lines
11 KiB
Python

import json
import os
import warnings
import sys
import ray
import numpy as np
import hytools as ht
from hytools.io.envi import *
from hytools.io.netcdf import *
from hytools.masks import mask_dict
warnings.filterwarnings("ignore")
def main():
config_file = sys.argv[1]
with open(config_file, 'r') as outfile:
config_dict = json.load(outfile)
if len(sys.argv)>2:
meta_file = sys.argv[2]
with open(meta_file, 'r') as outfile:
meta_dict = json.load(outfile)
config_dict["outside_metadata"] = meta_dict
else:
if "outside_metadata" in config_dict:
if not isinstance(config_dict["outside_metadata"],dict):
with open(config_dict["outside_metadata"], 'r') as outfile:
# load json and replace it by a dict
meta_dict = json.load(outfile)
config_dict["outside_metadata"] = meta_dict
else:
config_dict["outside_metadata"] = None
images= config_dict["input_files"]
if ray.is_initialized():
ray.shutdown()
print("Using %s CPUs." % config_dict['num_cpus'])
ray.init(num_cpus = config_dict['num_cpus'])
HyTools = ray.remote(ht.HyTools)
actors = [HyTools.remote() for image in images]
# Load data
if config_dict['file_type'] == 'envi':
anc_files = config_dict["anc_files"]
_ = ray.get([a.read_file.remote(image,config_dict['file_type'],
anc_files[image]) for a,image in zip(actors,images)])
elif config_dict['file_type'] == 'neon':
_ = ray.get([a.read_file.remote(image,config_dict['file_type']) for a,image in zip(actors,images)])
elif config_dict['file_type'] == 'emit' or config_dict['file_type'] == 'ncav':
anc_files = config_dict["anc_files"]
if bool(config_dict["glt_files"]):
glt_files = config_dict["glt_files"]
_ = ray.get([a.read_file.remote(image,config_dict['file_type'],
anc_path=anc_files[image],glt_path=glt_files[image]) for a,image in zip(actors,images)])
else:
_ = ray.get([a.read_file.remote(image,config_dict['file_type'],
anc_path=anc_files[image]) for a,image in zip(actors,images)])
else:
print("Image file type is not recognized.")
return
default_export_type = "envi"
if "export_type" in config_dict:
if not config_dict["export_type"] in ["envi","netcdf"]:
print("Image export file type is not recognized.")
return
else:
config_dict["export_type"]=default_export_type
if not "use_glt" in config_dict:
config_dict["use_glt"]=False
print("Estimating %s traits:" % len( config_dict['trait_models']))
for trait in config_dict['trait_models']:
with open(trait, 'r') as json_file:
trait_model = json.load(json_file)
print("\t %s" % trait_model["name"])
_ = ray.get([a.do.remote(apply_trait_models,config_dict) for a in actors])
ray.shutdown()
def apply_trait_models(hy_obj,config_dict):
'''Apply trait model(s) to image and export to file.
'''
hy_obj.create_bad_bands(config_dict['bad_bands'])
hy_obj.corrections = config_dict['corrections']
# Load correction coefficients
if 'topo' in hy_obj.corrections:
hy_obj.load_coeffs(config_dict['topo'][hy_obj.file_name],'topo')
if 'brdf' in hy_obj.corrections:
hy_obj.load_coeffs(config_dict['brdf'][hy_obj.file_name],'brdf')
hy_obj.resampler['type'] = config_dict["resampling"]['type']
for trait in config_dict['trait_models']:
with open(trait, 'r') as json_file:
trait_model = json.load(json_file)
coeffs = np.array(trait_model['model']['coefficients'])
intercept = np.array(trait_model['model']['intercepts'])
model_waves = np.array(trait_model['wavelengths'])
#Check if wavelengths match
resample = not all(x in hy_obj.wavelengths for x in model_waves)
if resample:
hy_obj.resampler['out_waves'] = model_waves
hy_obj.resampler['out_fwhm'] = trait_model['fwhm']
else:
wave_mask = [np.argwhere(x==hy_obj.wavelengths)[0][0] for x in model_waves]
use_glt_output_bool=False
if 'use_glt' in config_dict:
use_glt_output_bool = config_dict['use_glt']
if use_glt_output_bool==True:
header_dict = hy_obj.get_header(warp_glt=True)
else:
header_dict = hy_obj.get_header()
else:
header_dict = hy_obj.get_header()
# Build trait image file
header_dict['wavelength'] = []
header_dict['data ignore value'] = -9999
header_dict['data type'] = 4
header_dict['trait unit'] = trait_model['units']
header_dict['band names'] = ["%s_mean" % trait_model["name"],
"%s_std" % trait_model["name"],
'range_mask'] + [mask[0] for mask in config_dict['masks']]
header_dict['bands'] = len(header_dict['band names'] )
header_dict['file_type'] = config_dict['file_type']
header_dict['transform'] = hy_obj.transform
header_dict['projection'] = hy_obj.projection
#Generate masks
for mask,args in config_dict['masks']:
mask_function = mask_dict[mask]
hy_obj.gen_mask(mask_function,mask,args)
output_name = config_dict['output_dir']
if config_dict["export_type"]=="envi":
output_name += os.path.splitext(os.path.basename(hy_obj.file_name))[0] + "_%s" % trait_model["name"]
writer = WriteENVI(output_name,header_dict)
else:
output_name += os.path.splitext(os.path.basename(hy_obj.file_name))[0] + "_%s.nc" % trait_model["name"]
header_dict['lines_glt'] = hy_obj.lines_glt
header_dict['samples_glt'] = hy_obj.columns_glt
writer = WriteNetCDF(output_name,header_dict,
attr_dict=None,
glt_bool=use_glt_output_bool,
type_tag="trait",
band_name=trait_model["name"])
if (not use_glt_output_bool) and config_dict['file_type'] == 'emit':
writer.write_glt_dataset(hy_obj.glt_x,hy_obj.glt_y,dim_x_name="ortho_x",dim_y_name="ortho_y")
if config_dict['file_type'] == 'envi' or config_dict['file_type'] == 'emit':
iterator = hy_obj.iterate(by = 'chunk',
chunk_size = (2,hy_obj.columns),
corrections = hy_obj.corrections,
resample=resample)
elif config_dict['file_type'] == 'neon':
iterator = hy_obj.iterate(by = 'chunk',
chunk_size = (int(np.ceil(hy_obj.lines/32)),int(np.ceil(hy_obj.columns/32))),
corrections = hy_obj.corrections,
resample=resample)
elif config_dict['file_type'] == 'ncav':
iterator = hy_obj.iterate(by = 'chunk',
chunk_size = (256,hy_obj.columns),
corrections = hy_obj.corrections,
resample=resample)
out_stack = np.zeros((header_dict['bands'],header_dict['lines'],header_dict['samples'])).astype(np.float32)
while not iterator.complete:
chunk = iterator.read_next()
if not resample:
chunk = chunk[:,:,wave_mask]
trait_est = np.zeros((chunk.shape[0],
chunk.shape[1],
header_dict['bands']))
# Apply spectrum transforms
for transform in trait_model['model']["transform"]:
if transform== "vector":
norm = np.linalg.norm(chunk,axis=2)
chunk = chunk/norm[:,:,np.newaxis]
if transform == "absorb":
chunk = np.log(1/chunk)
if transform == "mean":
mean = chunk.mean(axis=2)
chunk = chunk/mean[:,:,np.newaxis]
trait_pred = np.einsum('jkl,ml->jkm',chunk,coeffs, optimize='optimal')
trait_pred = trait_pred + intercept
trait_est[:,:,0] = trait_pred.mean(axis=2)
trait_est[:,:,1] = trait_pred.std(ddof=1,axis=2)
range_mask = (trait_est[:,:,0] > trait_model["model_diagnostics"]['min']) & \
(trait_est[:,:,0] < trait_model["model_diagnostics"]['max'])
trait_est[:,:,2] = range_mask.astype(int)
# Subset and assign custom masks
for i,(mask,args) in enumerate(config_dict['masks']):
mask = hy_obj.mask[mask][iterator.current_line:iterator.current_line+chunk.shape[0],
iterator.current_column:iterator.current_column+chunk.shape[1]]
trait_est[:,:,3+i] = mask.astype(int)
nd_mask = hy_obj.mask['no_data'][iterator.current_line:iterator.current_line+chunk.shape[0],
iterator.current_column:iterator.current_column+chunk.shape[1]]
trait_est[~nd_mask,:2] = -9999
trait_est[~nd_mask,2:] = 255
x_start = iterator.current_column
x_end = iterator.current_column + trait_est.shape[1]
y_start = iterator.current_line
y_end = iterator.current_line + trait_est.shape[0]
out_stack[:,y_start:y_end,x_start:x_end] = np.moveaxis(trait_est,-1,0)
if use_glt_output_bool:
for iband in range(2):
writer.write_netcdf_band_glt(out_stack[iband,:,:],iband, (hy_obj.glt_y[hy_obj.fill_mask]-1,hy_obj.glt_x[hy_obj.fill_mask]-1),hy_obj.fill_mask)
writer.close()
for iband in range(len(header_dict['band names'][2:])):
writer = WriteNetCDF(output_name,header_dict,
attr_dict=config_dict["outside_metadata"],
glt_bool=use_glt_output_bool,
type_tag="mask",
band_name=header_dict['band names'][2:][iband])
writer.write_mask_band_glt(out_stack[2+iband,:,:], (hy_obj.glt_y[hy_obj.fill_mask]-1,hy_obj.glt_x[hy_obj.fill_mask]-1),hy_obj.fill_mask)
writer.close()
else:
for iband in range(2):
writer.write_band(out_stack[iband,:,:],iband)
writer.close()
for iband in range(len(header_dict['band names'][2:])):
writer = WriteNetCDF(output_name,header_dict,
attr_dict=config_dict["outside_metadata"],
glt_bool=use_glt_output_bool,
type_tag="mask",
band_name=header_dict['band names'][2:][iband])
writer.write_mask_band(out_stack[2+iband,:,:])
writer.close()
if __name__== "__main__":
main()