Ejemplo n.º 1
0
sourceProduct = ProductIO.readProduct(sys.argv[1])
b1 = sourceProduct.getBand('reflec_5')
b2 = sourceProduct.getBand('reflec_7')
b3 = sourceProduct.getBand('reflec_9')
w1 = b1.getSpectralWavelength()
w2 = b2.getSpectralWavelength()
w3 = b3.getSpectralWavelength()
a = (w2 - w1) / (w3 - w1)
k = 1.03

width = sourceProduct.getSceneRasterWidth()
height = sourceProduct.getSceneRasterHeight()
targetName = 'FLH_Product'
targetProduct = Product.newProduct(targetName, 'test', width, height)
targetBand = targetProduct.addNewBand('FLH', ProductData.TYPE_FLOAT32)
ProductUtils.copyGeoCoding(sourceProduct, targetProduct)
targetProduct.setProductWriter(ProductIO.getProductWriter('GeoTIFF'))
targetProduct.writeHeader(String.newString(targetName + '.tif'))

r1 = numpy.zeros(width, dtype=numpy.float32)
r2 = numpy.zeros(width, dtype=numpy.float32)
r3 = numpy.zeros(width, dtype=numpy.float32)

for y in range(height):
    b1.readPixelsFloat(0, y, width, 1, r1)
    b2.readPixelsFloat(0, y, width, 1, r2)
    b2.readPixelsFloat(0, y, width, 1, r3)
    print("processing line ", y, " of ", height)
    FLH = r2 – k * (r1 + a * (r3 – r1))
    targetBand.writePixelsFloat(0, y, width, 1, FLH)
Ejemplo n.º 2
0
height      = product.getSceneRasterHeight()
name        = product.getName()
description = product.getDescription()
band_names  = product.getBandNames()

print("Product: %s, %d x %d pixels, %s" % (name, width, height, description))
print("Bands:   %s" % (band_names))

b7 = product.getBand('radiance_7')
b10 = product.getBand('radiance_10')
ndviProduct = Product.newProduct('NDVI', 'NDVI', width, height)
ndviBand = ndviProduct.addNewBand('ndvi', ProductData.TYPE_FLOAT32)
ndviFlagsBand = ndviProduct.addNewBand('ndvi_flags', ProductData.TYPE_UINT8)
writer = ProductIO.getProductWriter('BEAM-DIMAP')

ProductUtils.copyGeoCoding(product, ndviProduct)

ndviFlagCoding = FlagCoding.newFlagCoding('ndvi_flags')
ndviFlagCoding.addFlag("NDVI_LOW", 1, "NDVI below 0")
ndviFlagCoding.addFlag("NDVI_HIGH", 2, "NDVI above 1")
ndviProduct.getFlagCodingGroup().add(ndviFlagCoding)

ndviFlagsBand.setSampleCoding(ndviFlagCoding)

ndviProduct.setProductWriter(writer)
ndviProduct.writeHeader(String.newString('ndvi.dim'))

r7  = numpy.zeros(width, dtype=numpy.float32)
r10 = numpy.zeros(width, dtype=numpy.float32)

for y in range(height):
Ejemplo n.º 3
0
desc = product.getDescription()
band_names = product.getBandNames()

print("Product: %s, %d x %d pixels, %s" % (name, width, height, desc))
print("Bands:   %s" % (band_names))

b7 = product.getBand('radiance_7')
b10 = product.getBand('radiance_10')
ndviProduct = Product.newProduct('NDVI', 'NDVI', width, height)
ndviBand = ndviProduct.addNewBand('ndvi', ProductData.TYPE_FLOAT32)
ndviBand.setNoDataValue(numpy.nan)
ndviBand.setNoDataValueUsed(True)

writer = ProductIO.getProductWriter('BEAM-DIMAP')

ProductUtils.copyGeoCoding(product, ndviProduct)

ndviProduct.setProductWriter(writer)
ndviProduct.writeHeader(String.newString('ndvi.dim'))

r7 = numpy.zeros(width, dtype=numpy.float32)
r10 = numpy.zeros(width, dtype=numpy.float32)

v7 = numpy.zeros(width, dtype=numpy.uint8)
v10 = numpy.zeros(width, dtype=numpy.uint8)

for y in range(height):
    b7.readPixelsFloat(0, y, width, 1, r7)
    b10.readPixelsFloat(0, y, width, 1, r10)

    b7.readValidMask(0, y, width, 1, v7)