how to convert jpg to tiff

[mywsat]

public static String img2Tif(String src) throws IOException {
        BufferedImage img = ImageIO.read(new File(src));
        int width = img.getWidth();
        int height = img.getHeight();
        int samplesPerPixel = 6;
        FieldType fieldType = FieldType.FLOAT;
        int bitsPerSample = fieldType.getBits();
        TIFFImage tiffImage = new TIFFImage();
        Rasters rasters = new Rasters(width, height, samplesPerPixel,
                fieldType);
        int rowsPerStrip = rasters.calculateRowsPerStrip(
                TiffConstants.PLANAR_CONFIGURATION_CHUNKY);
        FileDirectory directory = new FileDirectory();
        directory.setTileWidth(256);
        directory.setTileHeight(256);
        directory.setImageWidth(width);
        directory.setImageHeight(height);
        directory.setBitsPerSample(bitsPerSample);
        directory.setCompression(TiffConstants.COMPRESSION_NO);
        directory.setPhotometricInterpretation(
                TiffConstants.PHOTOMETRIC_INTERPRETATION_BLACK_IS_ZERO);
        directory.setSamplesPerPixel(samplesPerPixel);
        directory.setRowsPerStrip(rowsPerStrip);
        directory.setPlanarConfiguration(
                TiffConstants.PLANAR_CONFIGURATION_CHUNKY);
        directory.setSampleFormat(TiffConstants.SAMPLE_FORMAT_FLOAT);
        directory.setWriteRasters(rasters);
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
//TODO
            }
        }
        tiffImage.add(directory);
        try {
            TiffWriter.writeTiff(new File(src + ".tiff"), tiffImage);
        } catch (IOException e) {
            e.printStackTrace();
        }

how to convert java.awt.image.Raster to mil.nga.tiff.Rasters

[bosborn]

String file = "/path/base_file_name";

BufferedImage img = ImageIO.read(new File(file + ".jpeg"));

int width = img.getWidth();
int height = img.getHeight();
int samplesPerPixel = 3;
FieldType fieldType = FieldType.BYTE;

Rasters rasters = new Rasters(width, height, samplesPerPixel,
		fieldType);

FileDirectory directory = new FileDirectory();
directory.setImageWidth(width);
directory.setImageHeight(height);
directory.setBitsPerSample(fieldType.getBits());
directory.setCompression(TiffConstants.COMPRESSION_NO);
directory.setPhotometricInterpretation(
		TiffConstants.PHOTOMETRIC_INTERPRETATION_RGB);
directory.setSamplesPerPixel(samplesPerPixel);
int planarConfiguration = TiffConstants.PLANAR_CONFIGURATION_CHUNKY;
directory.setRowsPerStrip(
		rasters.calculateRowsPerStrip(planarConfiguration));
directory.setPlanarConfiguration(planarConfiguration);
directory.setSampleFormat(TiffConstants.SAMPLE_FORMAT_UNSIGNED_INT);
directory.setWriteRasters(rasters);

byte[] pixels = ((DataBufferByte) img.getData().getDataBuffer())
		.getData();
for (int y = 0; y < height; y++) {
	for (int x = 0; x < width; x++) {
		int index = ((y * width) + x) * samplesPerPixel;
		rasters.setPixelSample(0, x, y, pixels[index + 2]); // red
		rasters.setPixelSample(1, x, y, pixels[index + 1]); // green
		rasters.setPixelSample(2, x, y, pixels[index]); // blue
	}
}

TIFFImage tiffImage = new TIFFImage();
tiffImage.add(directory);
TiffWriter.writeTiff(new File(file + ".tiff"), tiffImage);

Or a less efficient but more understandable for loop

for (int y = 0; y < height; y++) {
	for (int x = 0; x < width; x++) {
		int pixel = img.getRGB(x, y);
		rasters.setPixelSample(0, x, y, (pixel >> 16) & 0xff); // red
		rasters.setPixelSample(1, x, y, (pixel >> 8) & 0xff); // green
		rasters.setPixelSample(2, x, y, pixel & 0xff); // blue
	}
}