std::vector<ImportDescriptor*> LandsatGeotiffImporter::createImportDescriptors(const std::string& filename,
const DynamicObject* pImageMetadata,
Landsat::LandsatImageType type)
{
std::string suffix;
if (type == Landsat::LANDSAT_VNIR)
{
suffix = "vnir";
}
else if (type == Landsat::LANDSAT_PAN)
{
suffix = "pan";
}
else if (type == Landsat::LANDSAT_TIR)
{
suffix = "tir";
}
std::vector<ImportDescriptor*> descriptors;
std::string spacecraft = dv_cast<std::string>(
pImageMetadata->getAttributeByPath("LANDSAT_MTL/L1_METADATA_FILE/PRODUCT_METADATA/SPACECRAFT_ID"), "");
std::vector<std::string> bandNames = Landsat::getSensorBandNames(spacecraft, type);
if (bandNames.empty())
{
//this spacecraft and iamge type
//isn't meant to have any bands, so terminate early
//e.g. spacecraft == "Landsat5" && type == Landsat::LANDSAT_PAN
return descriptors;
}
std::vector<unsigned int> validBands;
std::vector<std::string> bandFiles = Landsat::getGeotiffBandFilenames(
pImageMetadata, filename, type, validBands);
if (bandFiles.empty())
{
mWarnings.push_back("Unable to locate band files for " + suffix + " product.");
return descriptors;
}
ImportDescriptorResource pImportDescriptor(filename + "-" + suffix,
TypeConverter::toString<RasterElement>(), NULL, false);
if (pImportDescriptor.get() == NULL)
{
return descriptors;
}
RasterDataDescriptor* pDescriptor = dynamic_cast<RasterDataDescriptor*>(pImportDescriptor->getDataDescriptor());
if (pDescriptor == NULL)
{
return descriptors;
}
pDescriptor->setProcessingLocation(ON_DISK);
DynamicObject* pMetadata = pDescriptor->getMetadata();
pMetadata->merge(pImageMetadata);
FactoryResource<RasterFileDescriptor> pFileDescriptorRes;
pDescriptor->setFileDescriptor(pFileDescriptorRes.get());
RasterFileDescriptor* pFileDescriptor = dynamic_cast<RasterFileDescriptor*>(pDescriptor->getFileDescriptor());
pFileDescriptor->setFilename(filename);
std::string tiffFile = bandFiles[0];
if (!Landsat::parseBasicsFromTiff(tiffFile, pDescriptor))
{
mWarnings.push_back("Unable to parse basic information about image from tiff file for " + suffix + " product.");
return descriptors;
}
if (pDescriptor->getBandCount() != 1 || pDescriptor->getDataType() != INT1UBYTE)
{
mWarnings.push_back("Improperly formatted tiff file for " + suffix + " product.");
return descriptors;
}
pDescriptor->setInterleaveFormat(BSQ); //one tiff file per band.
pFileDescriptor->setInterleaveFormat(BSQ);
std::vector<DimensionDescriptor> bands = RasterUtilities::generateDimensionVector(
bandFiles.size(), true, false, true);
pDescriptor->setBands(bands);
pFileDescriptor->setBands(bands);
pDescriptor->setBadValues(std::vector<int>(1, 0));
pFileDescriptor->setDatasetLocation(suffix);
//special metadata here
Landsat::fixMtlMetadata(pMetadata, type, validBands);
std::vector<std::string> defaultImport = OptionsLandsatImport::getSettingDefaultImport();
bool fallbackToDn = false;
descriptors.push_back(pImportDescriptor.release());
if (type == Landsat::LANDSAT_VNIR)
{
//attempt to display true-color
DimensionDescriptor redBand = RasterUtilities::findBandWavelengthMatch(0.630, 0.690, pDescriptor);
DimensionDescriptor greenBand = RasterUtilities::findBandWavelengthMatch(0.510, 0.590, pDescriptor);
DimensionDescriptor blueBand = RasterUtilities::findBandWavelengthMatch(0.410, 0.490, pDescriptor);
if (redBand.isValid() && greenBand.isValid() && blueBand.isValid())
{
pDescriptor->setDisplayMode(RGB_MODE);
pDescriptor->setDisplayBand(RED, redBand);
pDescriptor->setDisplayBand(GREEN, greenBand);
pDescriptor->setDisplayBand(BLUE, blueBand);
}
}
std::vector<std::pair<double, double> > radianceFactors = Landsat::determineRadianceConversionFactors(
pMetadata, type, validBands);
bool shouldDefaultImportRadiance =
std::find(defaultImport.begin(), defaultImport.end(), suffix + "-Radiance") != defaultImport.end();
if (radianceFactors.size() == bandFiles.size())
{
//we have enough to create radiance import descriptor
RasterDataDescriptor* pRadianceDescriptor = dynamic_cast<RasterDataDescriptor*>(
pDescriptor->copy(filename + "-" + suffix + "-radiance", NULL));
if (pRadianceDescriptor != NULL)
{
pRadianceDescriptor->setDataType(FLT4BYTES);
pRadianceDescriptor->setValidDataTypes(std::vector<EncodingType>(1, pRadianceDescriptor->getDataType()));
pRadianceDescriptor->setBadValues(std::vector<int>(1, -100));
FactoryResource<Units> pUnits;
pUnits->setUnitType(RADIANCE);
pUnits->setUnitName("w/(m^2*sr*um)");
pUnits->setScaleFromStandard(1.0);
pRadianceDescriptor->setUnits(pUnits.get());
FileDescriptor* pRadianceFileDescriptor = pRadianceDescriptor->getFileDescriptor();
if (pRadianceFileDescriptor != NULL)
{
pRadianceFileDescriptor->setDatasetLocation(suffix + "-radiance");
ImportDescriptorResource pRadianceImportDescriptor(pRadianceDescriptor,
shouldDefaultImportRadiance);
descriptors.push_back(pRadianceImportDescriptor.release());
}
}
}
else if (shouldDefaultImportRadiance)
{
fallbackToDn = true;
}
std::vector<double> reflectanceFactors = Landsat::determineReflectanceConversionFactors(
pMetadata, type, validBands);
bool shouldDefaultImportReflectance =
std::find(defaultImport.begin(), defaultImport.end(), suffix + "-Reflectance") != defaultImport.end();
if (radianceFactors.size() == bandFiles.size() && reflectanceFactors.size() == bandFiles.size())
{
//we have enough to create reflectance import descriptor
RasterDataDescriptor* pReflectanceDescriptor = dynamic_cast<RasterDataDescriptor*>(
pDescriptor->copy(filename + "-" + suffix + "-reflectance", NULL));
if (pReflectanceDescriptor != NULL)
{
pReflectanceDescriptor->setDataType(INT2SBYTES);
pReflectanceDescriptor->setValidDataTypes(
std::vector<EncodingType>(1, pReflectanceDescriptor->getDataType()));
pReflectanceDescriptor->setBadValues(std::vector<int>(1, std::numeric_limits<short>::max()));
FactoryResource<Units> pUnits;
pUnits->setUnitType(REFLECTANCE);
pUnits->setUnitName("Reflectance");
pUnits->setScaleFromStandard(1/10000.0);
pReflectanceDescriptor->setUnits(pUnits.get());
FileDescriptor* pReflectanceFileDescriptor = pReflectanceDescriptor->getFileDescriptor();
if (pReflectanceFileDescriptor != NULL)
{
pReflectanceFileDescriptor->setDatasetLocation(suffix + "-reflectance");
ImportDescriptorResource pReflectanceImportDescriptor(pReflectanceDescriptor,
shouldDefaultImportReflectance);
descriptors.push_back(pReflectanceImportDescriptor.release());
}
}
}
else if (shouldDefaultImportReflectance)
{
fallbackToDn = true;
}
double K1 = 0.0;
double K2 = 0.0;
bool haveTemperatureFactors = Landsat::getTemperatureConstants(pMetadata, type,
K1, K2);
bool shouldDefaultImportTemperature =
std::find(defaultImport.begin(), defaultImport.end(), suffix + "-Temperature") != defaultImport.end();
if (radianceFactors.size() == bandFiles.size() && haveTemperatureFactors)
{
//we have enough to create temperature import descriptor
RasterDataDescriptor* pTemperatureDescriptor = dynamic_cast<RasterDataDescriptor*>(
pDescriptor->copy(filename + "-" + suffix + "-temperature", NULL));
if (pTemperatureDescriptor != NULL)
{
pTemperatureDescriptor->setDataType(FLT4BYTES);
pTemperatureDescriptor->setValidDataTypes(
std::vector<EncodingType>(1, pTemperatureDescriptor->getDataType()));
pTemperatureDescriptor->setBadValues(std::vector<int>(1, -1));
FactoryResource<Units> pUnits;
pUnits->setUnitType(EMISSIVITY);
pUnits->setUnitName("K");
pUnits->setScaleFromStandard(1.0);
pTemperatureDescriptor->setUnits(pUnits.get());
FileDescriptor* pTemperatureFileDescriptor = pTemperatureDescriptor->getFileDescriptor();
if (pTemperatureFileDescriptor != NULL)
{
pTemperatureFileDescriptor->setDatasetLocation(suffix + "-temperature");
ImportDescriptorResource pTemperatureImportDescriptor(pTemperatureDescriptor,
shouldDefaultImportTemperature);
descriptors.push_back(pTemperatureImportDescriptor.release());
}
}
}
else if (shouldDefaultImportTemperature)
{
fallbackToDn = true;
}
if (fallbackToDn ||
std::find(defaultImport.begin(), defaultImport.end(), suffix + "-DN") != defaultImport.end())
{
pImportDescriptor->setImported(true);
}
return descriptors;
}
