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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2010, 2011, 2012, 2013.
# Author(s):
# Adam Dybbroe <adam.dybbroe@smhi.se>
# This file is part of mpop.
# mpop is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
# mpop is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with
# mpop. If not, see <http://www.gnu.org/licenses/>.
"""This modules describes the viirs instrument.
It provides VIIRS specific methods for RGB-compositing.
"""
import numpy as np
import mpop.imageo.geo_image as geo_image
from mpop.instruments.visir import VisirCompositer
from mpop.logger import LOG
# VIIRS
# Since there is overlap between I-bands and M-bands we need to
# specifically re-define some of the RGB composites already defined
# in the standard visir.py module. So, the same names, like "overview"
# can be invoked and based on M-bands only.
# In addition we define new composite names for the I-bands,
# like e.g. hr_overview, hr_night_fog, etc
#
class ViirsCompositer(VisirCompositer):
"""This class sets up the VIIRS instrument channel list.
"""
instrument_name = "viirs"
def overview(self, stretch='crude', gamma=1.6):
"""Make an Overview RGB image composite from VIIRS
channels.
"""
self.check_channels('M05', 'M07', 'M15')
ch1 = self['M05'].check_range()
ch2 = self['M07'].check_range()
ch3 = -self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
if stretch:
img.enhance(stretch=stretch)
if gamma:
img.enhance(gamma=gamma)
return img
overview.prerequisites = set(['M05', 'M07', 'M15'])
def hr_overview(self):
"""Make a high resolution Overview RGB image composite
from the VIIRS I-bands only - 375 meter resolution.
"""
self.check_channels('I01', 'I02', 'I05')
ch1 = self['I01'].check_range()
ch2 = self['I02'].check_range()
ch3 = -self['I05'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch="crude")
img.enhance(gamma=1.6)
return img
hr_overview.prerequisites = set(['I01', 'I02', 'I05'])
def truecolor(self):
"""Make a True Color RGB image composite from
M-bands only.
"""
self.check_channels('M02', 'M04', 'M05')
ch1 = self['M05'].check_range()
ch2 = self['M04'].check_range()
ch3 = self['M02'].check_range()
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=None,
mode="RGB")
img.enhance(stretch="linear")
img.enhance(gamma=2.0)
return img
truecolor.prerequisites = set(['M02', 'M04', 'M05'])
def natural(self):
"""Make a Natural Colors RGB image composite from
M-bands only.
"""
self.check_channels('M05', 'M07', 'M10')
ch1 = self['M10'].check_range()
ch2 = self['M07'].check_range()
ch3 = self['M05'].check_range()
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((0, 90),
(0, 90),
(0, 90)))
img.enhance(gamma=1.8)
return img
natural.prerequisites = set(['M05', 'M07', 'M10'])
def hr_natural(self):
"""Make a high resolution Day Natural Colors RGB image
composite from I-bands only - 375 meter resolution.
"""
self.check_channels('I01', 'I02', 'I03')
ch1 = self['I03'].check_range()
ch2 = self['I02'].check_range()
ch3 = self['I01'].check_range()
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((0, 90),
(0, 90),
(0, 90)))
img.enhance(gamma=1.8)
return img
hr_natural.prerequisites = set(['I01', 'I02', 'I03'])
def vis06(self):
"""Make a black and white image of the VIS 0.635um channel.
"""
return self.channel_image("M05")
vis06.prerequisites = set(['M05'])
def hr_vis06(self):
"""Make a high res black and white image of the
'visible' (VIS) I-band at 0.640um.
"""
return self.channel_image('I01')
hr_vis06.prerequisites = set(['I01'])
def green_snow(self):
"""Make a Green Snow RGB image composite.
"""
self.check_channels('M05', 'M10', 'M15')
ch1 = self['M10'].check_range()
ch2 = self['M05'].check_range()
ch3 = -self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch = "crude")
img.enhance(gamma = 1.6)
return img
green_snow.prerequisites = set(['M05', 'M10', 'M15'])
def hr_green_snow(self):
"""Make a Green Snow RGB image composite.
"""
self.check_channels('I01', 'I03', 'I05')
ch1 = self['I03'].check_range()
ch2 = self['I01'].check_range()
ch3 = -self['I05'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch = "crude")
img.enhance(gamma = 1.6)
return img
hr_green_snow.prerequisites = set(['I01', 'I03', 'I05'])
def red_snow(self):
"""Make a Red Snow RGB image composite.
"""
self.check_channels('M05', 'M10', 'M15')
ch1 = self['M05'].check_range()
ch2 = self['M10'].check_range()
ch3 = -self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch = "crude")
return img
red_snow.prerequisites = set(['M05', 'M10', 'M15'])
def hr_red_snow(self):
"""Make a high resolution Red Snow RGB image composite
from the I-bands only.
"""
self.check_channels('I01', 'I03', 'I05')
ch1 = self['I01'].check_range()
ch2 = self['I03'].check_range()
ch3 = -self['I05'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch = "crude")
return img
hr_red_snow.prerequisites = set(['I01', 'I03', 'I05'])
def night_color(self):
self.check_channels('M12', 'M15', 'M16')
ch1 = -self['M12'].data
ch2 = -self['M15'].data
ch3 = -self['M16'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.stretch(stretch="histogram")
return img
night_color.prerequisites = set(['M12', 'M15', 'M16'])
def night_fog(self):
"""Make a Night Fog RGB image composite.
"""
self.check_channels('M12', 'M15', 'M16')
ch1 = self['M16'].data - self['M15'].data
ch2 = self['M15'].data - self['M12'].data
ch3 = self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((-4, 2),
(0, 6),
(243, 293)))
img.enhance(gamma=(1.0, 2.0, 1.0))
return img
night_fog.prerequisites = set(['M12', 'M15', 'M16'])
def dust(self):
"""Make a Dust RGB image composite.
"""
self.check_channels('M14', 'M15', 'M16')
ch1 = self['M16'].data - self['M15'].data
ch2 = self['M15'].data - self['M14'].data
ch3 = self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((-4, 2),
(0, 15),
(261, 289)))
img.enhance(gamma=(1.0, 2.5, 1.0))
return img
dust.prerequisites = set(['M14', 'M15', 'M16'])
def ash(self):
"""Make a Ash RGB image composite.
"""
self.check_channels('M14', 'M15', 'M16')
ch1 = self['M16'].data - self['M15'].data
ch2 = self['M15'].data - self['M14'].data
ch3 = self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((-4, 2),
(-4, 5),
(243, 303)))
return img
ash.prerequisites = set(['M14', 'M15', 'M16'])
def fog(self):
"""Make a Fog RGB image composite.
"""
self.check_channels('M14', 'M15', 'M16')
ch1 = self['M16'].data - self['M15'].data
ch2 = self['M15'].data - self['M14'].data
ch3 = self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB",
crange=((-4, 2),
(0, 6),
(243, 283)))
img.enhance(gamma=(1.0, 2.0, 1.0))
return img
fog.prerequisites = set(['M14', 'M15', 'M16'])
def cloudtop(self):
"""Make a Cloudtop RGB image composite.
"""
self.check_channels('M12', 'M15', 'M16')
ch1 = -self['M12'].data
ch2 = -self['M15'].data
ch3 = -self['M16'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
img.enhance(stretch=(0.005, 0.005))
return img
cloudtop.prerequisites = set(['M12', 'M15', 'M16'])
def dnb(self, stretch="histogram"):
"""Make a black and white image of the Day-Night band."""
self.check_channels('DNB')
img = geo_image.GeoImage(self['DNB'].data,
self.area,
self.time_slot,
fill_value=0,
mode="L")
if stretch:
img.enhance(stretch=stretch)
return img
dnb.prerequisites = set(['DNB'])
def dnb_rgb(self, stretch="linear"):
"""Make a RGB Day-Night band using M15 as blue."""
self.check_channels('DNB', 'M15')
ch1 = self['DNB'].data
ch2 = self['DNB'].data
ch3 = -self['M15'].data
img = geo_image.GeoImage((ch1, ch2, ch3),
self.area,
self.time_slot,
fill_value=(0, 0, 0),
mode="RGB")
if stretch:
img.enhance(stretch=stretch)
return img
dnb_rgb.prerequisites = set(['DNB', 'M15'])
def ir108(self):
"""Make a black and white image of the IR 10.8um channel.
"""
self.check_channels("M15")
img = geo_image.GeoImage(self["M15"].data,
self.area,
self.time_slot,
fill_value=0,
mode="L",
crange=(-70 + 273.15, 57.5 + 273.15))
img.enhance(inverse=True)
return img
ir108.prerequisites = set(["M15"])
def hr_ir108(self):
"""Make a black and white image of the IR 10.8um channel (320m).
"""
self.check_channels("I05")
img = geo_image.GeoImage(self["I05"].data,
self.area,
self.time_slot,
fill_value=0,
mode="L",
crange=(-70 + 273.15, 57.5 + 273.15))
img.enhance(inverse=True)
return img
hr_ir108.prerequisites = set(["I05"])
|
