/** * Gets pixel data of an <code>IIOImage</code> object. * * @param image an <code>IIOImage</code> object * @return a byte buffer of pixel data * @throws Exception */ public static ByteBuffer getImageByteBuffer(IIOImage image) throws IOException { // Set up the writeParam TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US); tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); // Get tif writer and set output to file Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT); ImageWriter writer = writers.next(); if (writer == null) { throw new RuntimeException( "Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net"); } // Get the stream metadata IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam); ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream); writer.setOutput(ios); writer.write( streamMetadata, new IIOImage(image.getRenderedImage(), null, null), tiffWriteParam); // writer.write(image.getRenderedImage()); writer.dispose(); // ImageIO.write(image.getRenderedImage(), "tiff", ios); // this can be used in lieu of // writer ios.seek(0); BufferedImage bi = ImageIO.read(ios); return convertImageData(bi); }
/** * Creates a list of TIFF image files from an image file. It basically converts images of other * formats to TIFF format, or a multi-page TIFF image to multiple TIFF image files. * * @param imageFile input image file * @param index an index of the page; -1 means all pages, as in a multi-page TIFF image * @return a list of TIFF image files * @throws Exception */ public static List<File> createTiffFiles(File imageFile, int index) throws IOException { List<File> tiffFiles = new ArrayList<File>(); String imageFileName = imageFile.getName(); String imageFormat = imageFileName.substring(imageFileName.lastIndexOf('.') + 1); Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(imageFormat); ImageReader reader = readers.next(); if (reader == null) { throw new RuntimeException( "Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net"); } ImageInputStream iis = ImageIO.createImageInputStream(imageFile); reader.setInput(iis); // Read the stream metadata // IIOMetadata streamMetadata = reader.getStreamMetadata(); // Set up the writeParam TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US); tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); // Get tif writer and set output to file Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT); ImageWriter writer = writers.next(); // Read the stream metadata IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam); int imageTotal = reader.getNumImages(true); for (int i = 0; i < imageTotal; i++) { // all if index == -1; otherwise, only index-th if (index == -1 || i == index) { // BufferedImage bi = reader.read(i); // IIOImage oimage = new IIOImage(bi, null, reader.getImageMetadata(i)); IIOImage oimage = reader.readAll(i, reader.getDefaultReadParam()); File tiffFile = File.createTempFile(OUTPUT_FILE_NAME, TIFF_EXT); ImageOutputStream ios = ImageIO.createImageOutputStream(tiffFile); writer.setOutput(ios); writer.write(streamMetadata, oimage, tiffWriteParam); ios.close(); tiffFiles.add(tiffFile); } } writer.dispose(); reader.dispose(); return tiffFiles; }
public static List<File> createTiffFiles(List<IIOImage> imageList, int index, int dpiX, int dpiY) throws IOException { List<File> tiffFiles = new ArrayList<File>(); // Set up the writeParam TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US); tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); // Get tif writer and set output to file Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT); ImageWriter writer = writers.next(); if (writer == null) { throw new RuntimeException( "Need to install JAI Image I/O package.\nhttps://jai-imageio.dev.java.net"); } // Get the stream metadata IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam); // all if index == -1; otherwise, only index-th for (IIOImage oimage : (index == -1 ? imageList : imageList.subList(index, index + 1))) { if (dpiX != 0 && dpiY != 0) { // Get the default image metadata. ImageTypeSpecifier imageType = ImageTypeSpecifier.createFromRenderedImage(oimage.getRenderedImage()); IIOMetadata imageMetadata = writer.getDefaultImageMetadata(imageType, null); imageMetadata = setDPIViaAPI(imageMetadata, dpiX, dpiY); oimage.setMetadata(imageMetadata); } File tiffFile = File.createTempFile(OUTPUT_FILE_NAME, TIFF_EXT); ImageOutputStream ios = ImageIO.createImageOutputStream(tiffFile); writer.setOutput(ios); writer.write(streamMetadata, oimage, tiffWriteParam); ios.close(); tiffFiles.add(tiffFile); } writer.dispose(); return tiffFiles; }
/** * Merges multiple images into one TIFF image. * * @param inputImages an array of image files * @param outputTiff the output TIFF file * @throws Exception */ public static void mergeTiff(File[] inputImages, File outputTiff) throws IOException { List<IIOImage> imageList = new ArrayList<IIOImage>(); for (int i = 0; i < inputImages.length; i++) { imageList.addAll(getIIOImageList(inputImages[i])); } if (imageList.isEmpty()) { // if no image return; } Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT); ImageWriter writer = writers.next(); // Set up the writeParam TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US); tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED); // Get the stream metadata IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam); ImageOutputStream ios = ImageIO.createImageOutputStream(outputTiff); writer.setOutput(ios); IIOImage firstIioImage = imageList.remove(0); writer.write(streamMetadata, firstIioImage, tiffWriteParam); int i = 1; for (IIOImage iioImage : imageList) { writer.writeInsert(i++, iioImage, tiffWriteParam); } ios.close(); writer.dispose(); }
public void prepareWriteSequence(IIOMetadata streamMetadata) throws IOException { ImageOutputStream out = (ImageOutputStream) getOutput(); out.setByteOrder(ByteOrder.LITTLE_ENDIAN); out.writeShort(0x00004949); // 0: II = intel = little endian out.writeShort(42); // 2: version, magic value ifdptr = out.getStreamPosition(); // save position (4): write here later the offset to first ifd // (ifd linked list) out.writeInt(0); // 4: offset first Image File Directory // 8: header size }
private IFD writeYCbCrImage( ImageOutputStream out, BufferedImage image, int comp, TIFFImageWriteParam param) throws IOException { image = convert(image, BufferedImage.TYPE_INT_RGB); try { int width = image.getWidth(); int height = image.getHeight(); IFD ifd = new IFD(); // entries need to be in tag order ! int ss = (param == null) ? 0x22 : param.getSubSampling(); int ssh = (ss >> 4) & 0x0F; int ssv = ss & 0x0F; if (ssh < ssv) { // YCbCrSubsampleVert shall always be less than or equal to YCbCrSubsampleHoriz. throw new IOException( "Internal error: YCbCrSubsampleVert is not less than YCbCrSubsampleHoriz."); } // int ww=((width +ssh-1)/ssh)*ssh; // [1] p.92 // int hh=((height+ssv-1)/ssv)*ssv; int ww = width; int hh = height; ifd.add(new DEFactory.NewSubfileTypeDE(2)); // 254 single page of multipage file ifd.add(new DEFactory.ImageWidthDE(ww)); // 256 ifd.add(new DEFactory.ImageLengthDE(hh)); // 257 DEFactory.BitsPerSampleDE bpss = new DEFactory.BitsPerSampleDE(3); bpss.setBitsPerSample(0, 8); // Y bpss.setBitsPerSample(1, 8); // Cb bpss.setBitsPerSample(2, 8); // Cr ifd.add(bpss); // 258 ifd.add(new DEFactory.CompressionDE(comp)); // 259 ifd.add(new DEFactory.PhotometricInterpretationDE(YCbCr)); // 262 int maxrps, maxstripes; // max RowsPerStrip if ((1 << 13) <= width) { maxrps = 1; maxstripes = height; // one row per strip } else { maxrps = (1 << 13) / width; maxstripes = (height + maxrps - 1) / maxrps; } if (comp == JPEG) { maxrps = ((maxrps + 8 * ssv - 1) / (8 * ssv)) * (8 * ssv); maxstripes = (height + maxrps - 1) / maxrps; } DEFactory.StripOffsetsDE offsets = new DEFactory.StripOffsetsDE(maxstripes); ifd.add(offsets); // 273 ifd.add(new DEFactory.SamplesPerPixelDE(3)); // 277 ifd.add(new DEFactory.RowsPerStripDE(maxrps)); // 278 DEFactory.StripByteCountsDE counts = new DEFactory.StripByteCountsDE(maxstripes); ifd.add(counts); // 279 if (param == null) { ifd.add(new DEFactory.XResolutionDE(72.0)); // 282 ifd.add(new DEFactory.YResolutionDE(72.0)); // 283 } else { ifd.add(new DEFactory.XResolutionDE(param.getXResolution())); // 282 ifd.add(new DEFactory.YResolutionDE(param.getYResolution())); // 283 } ifd.add(new DEFactory.ResolutionUnitDE(Inch)); // 296 ByteArrayOutputStream baos = new ByteArrayOutputStream(); OutputStream os = baos; JPEGOutputStream jpegos = null; if (comp == JPEG) { jpegos = new JPEGOutputStream(baos); int quality = (param == null) ? 50 : (int) (param.getCompressionQuality() * 100); jpegos.setZZQuantizationTable(0, JPEGConstants.LQT, quality); jpegos.setZZQuantizationTable(1, JPEGConstants.CQT, quality); jpegos.setRawDCHuffmanTable(0, JPEGConstants.HLDCTable); jpegos.setRawACHuffmanTable(0, JPEGConstants.HLACTable); jpegos.setRawDCHuffmanTable(1, JPEGConstants.HCDCTable); jpegos.setRawACHuffmanTable(1, JPEGConstants.HCACTable); jpegos.defineQuantizationTables(); jpegos.defineHuffmanTables(); jpegos.close(); DEFactory.JPEGTablesDE jpegtables = new DEFactory.JPEGTablesDE(baos.toByteArray()); ifd.add(jpegtables); // 347 baos.reset(); os = jpegos; } // CCIR Recommendation 601-1 LumaRed=299/1000 LumaGreen=587/1000 LumeBlue=114/1000 // Y = ( LumaRed * R + LumaGreen * G + LumaBlue * B ) // Cb = ( B - Y ) / ( 2 - 2 * LumaBlue ) // Cr = ( R - Y ) / ( 2 - 2 * LumaRed ) double LumaRed = 299.0 / 1000.0; double LumaGreen = 587.0 / 1000.0; double LumaBlue = 114.0 / 1000.0; DEFactory.YCbCrCoefficientsDE YCbCrCoeff = new DEFactory.YCbCrCoefficientsDE(); YCbCrCoeff.setLumaRed(LumaRed); // Y YCbCrCoeff.setLumaGreen(LumaGreen); // Cb YCbCrCoeff.setLumaBlue(LumaBlue); // Cr ifd.add(YCbCrCoeff); // 529 DEFactory.YCbCrSubSamplingDE YCbCrSubSampling = new DEFactory.YCbCrSubSamplingDE(); YCbCrSubSampling.setHoriz(ssh); YCbCrSubSampling.setVert(ssv); ifd.add(YCbCrSubSampling); // 530 double RfBY = 0; double RfWY = 255; double RfBCb = 128; double RfWCb = 255; double RfBCr = 128; double RfWCr = 255; DEFactory.ReferenceBlackWhiteDE ReferenceBlackWhite = new DEFactory.ReferenceBlackWhiteDE(); ReferenceBlackWhite.setY(RfBY, RfWY); ReferenceBlackWhite.setCb(RfBCb, RfWCb); ReferenceBlackWhite.setCr(RfBCr, RfWCr); ifd.add(ReferenceBlackWhite); // 532 TIFFYCbCrOutputStream ycbcros; if (jpegos == null) { ycbcros = new TIFFYCbCrOutputStream(os, width, ssv, ssh); os = new TIFFSubSamplingOutputStream(ycbcros, width, ssv, ssh); } else { ycbcros = new TIFFYCbCrOutputStream(os, width, 1, 1); // jpeg does own subsampling os = ycbcros; } ycbcros.setPositioning(1); ycbcros.setColourCoefficients(LumaRed, LumaGreen, LumaBlue); ycbcros.setRfBWY(RfBY, RfWY); ycbcros.setRfBWCb(RfBCb, RfWCb); ycbcros.setRfBWCr(RfBCr, RfWCr); WritableRaster raster = image.getRaster(); DataBufferInt buffer = (DataBufferInt) raster.getDataBuffer(); int[] imgdata = (int[]) buffer.getData(); int c = 0, index = 0; for (int y = 0; y < height; y += maxrps) { if ((height - y) < maxrps) { maxrps = height - y; } if (jpegos != null) { jpegos.startOfImage(); int[] hv = {(ssh << 4) | ssv, 0x11, 0x11}; // (Hi<<4)|Vi int[] q = {0, 1, 1}; // quantization table Y=0, Cb=Cr=1 // jpegos.startOfFrame(((maxrps+ssv-1)/ssv)*ssv,ww,hv,q); jpegos.startOfFrame(maxrps, ww, hv, q); int[] sel = {0, 1, 1}; // DC,AC code table Y=0, Cb=Cr=1 jpegos.startOfScan(sel); } for (int i = 0; i < maxrps; i++) { int x = 0; while (x < width) { c = imgdata[x + (y + i) * width]; // c = image.getRGB(x,y+i); os.write((c >> 16) & 0x000000FF); os.write((c >> 8) & 0x000000FF); os.write(c & 0x000000FF); x++; } while (x < ww) { os.write((c >> 16) & 0x000000FF); os.write((c >> 8) & 0x000000FF); os.write(c & 0x000000FF); x++; } } os.close(); byte[] data = baos.toByteArray(); counts.setCount(index, data.length); // update ifd strip counter array offsets.setOffset(index, out.getStreamPosition()); // update ifd image data offset array out.write(data); // write to image stream baos.reset(); index++; } return ifd; } catch (Exception e) { e.printStackTrace(); throw new IOException(getClass().getName() + ".writeYCbCrImage:\n\t" + e.getMessage()); } }
private IFD writeCMYKImage(ImageOutputStream out, BufferedImage image, TIFFImageWriteParam param) throws IOException { try { int width = image.getWidth(); int height = image.getHeight(); IFD ifd = new IFD(); // entries need to be in tag order ! ifd.add(new DEFactory.NewSubfileTypeDE(2)); // 254 single page of multipage file ifd.add(new DEFactory.ImageWidthDE(width)); // 256 ifd.add(new DEFactory.ImageLengthDE(height)); // 257 DEFactory.BitsPerSampleDE bpss = new DEFactory.BitsPerSampleDE(4); bpss.setBitsPerSample(0, 8); // cyan bpss.setBitsPerSample(1, 8); // magneta bpss.setBitsPerSample(2, 8); // yellow bpss.setBitsPerSample(3, 8); // key (black) ifd.add(bpss); // 258 ifd.add(new DEFactory.CompressionDE(NOCOMPRESSION)); // 259 ifd.add(new DEFactory.PhotometricInterpretationDE(CMYK)); // 262 int maxrps, maxstripes; // max RowsPerStrip if ((1 << 13) <= width) { maxrps = 1; maxstripes = height; // one row per strip } else { maxrps = (1 << 13) / width; maxstripes = (height + maxrps - 1) / maxrps; } DEFactory.StripOffsetsDE offsets = new DEFactory.StripOffsetsDE(maxstripes); ifd.add(offsets); // 273 ifd.add(new DEFactory.SamplesPerPixelDE(4)); // 277 ifd.add(new DEFactory.RowsPerStripDE(maxrps)); // 278 DEFactory.StripByteCountsDE counts = new DEFactory.StripByteCountsDE(maxstripes); ifd.add(counts); // 279 if (param == null) { ifd.add(new DEFactory.XResolutionDE(72.0)); // 282 ifd.add(new DEFactory.YResolutionDE(72.0)); // 283 } else { ifd.add(new DEFactory.XResolutionDE(param.getXResolution())); // 282 ifd.add(new DEFactory.YResolutionDE(param.getYResolution())); // 283 } ifd.add(new DEFactory.ResolutionUnitDE(Inch)); // 296 int index = 0; for (int y = 0; y < height; y += maxrps) { /* Assume rgb image. Each strip: evaluate c m y k colour save in byte array write to image file */ ByteArrayOutputStream baos = new ByteArrayOutputStream(); for (int i = 0; i < maxrps; i++) { if ((y + i) == height) { break; } // last strip might have less rows for (int x = 0; x < width; x++) { int c = image.getRGB(x, y + i); int R = (c >> 16) & 0x00FF; int G = (c >> 8) & 0x00FF; int B = (c) & 0x00FF; if ((R == 255) && (G == 255) && (B == 255)) { baos.write(0); baos.write(0); baos.write(0); baos.write(0); } else { double C = 1.0 - R / 255.0; double M = 1.0 - G / 255.0; double Y = 1.0 - B / 255.0; double K = C; if (M < K) { K = M; } if (Y < K) { K = Y; } C = ((C - K) / (1.0 - K)) * 255.0; M = ((M - K) / (1.0 - K)) * 255.0; Y = ((Y - K) / (1.0 - K)) * 255.0; K *= 255.0; baos.write((int) C); baos.write((int) M); baos.write((int) Y); baos.write((int) K); } } } baos.close(); byte[] data = baos.toByteArray(); counts.setCount(index, data.length); // update ifd strip counter array offsets.setOffset(index, out.getStreamPosition()); // update ifd image data offset array out.write(data); // write to image stream index++; } return ifd; } catch (Exception e) { e.printStackTrace(); throw new IOException(getClass().getName() + ".writeCMYKImage:\n\t" + e.getMessage()); } }
private IFD writeRGBImage( ImageOutputStream out, BufferedImage image, int comp, TIFFImageWriteParam param) throws IOException { image = convert(image, BufferedImage.TYPE_INT_RGB); try { int width = image.getWidth(); int height = image.getHeight(); IFD ifd = new IFD(); // entries need to be in tag order ! ifd.add(new DEFactory.NewSubfileTypeDE(2)); // 254 single page of multipage file ifd.add(new DEFactory.ImageWidthDE(width)); // 256 ifd.add(new DEFactory.ImageLengthDE(height)); // 257 DEFactory.BitsPerSampleDE bpss = new DEFactory.BitsPerSampleDE(3); bpss.setBitsPerSample(0, 8); // red bpss.setBitsPerSample(1, 8); // green bpss.setBitsPerSample(2, 8); // blue ifd.add(bpss); // 258 ifd.add(new DEFactory.CompressionDE(comp)); // 259 ifd.add(new DEFactory.PhotometricInterpretationDE(RGB)); // 262 int maxrps, maxstripes; // max RowsPerStrip if ((1 << 13) <= width) { maxrps = 1; maxstripes = height; // one row per strip } else { maxrps = (1 << 13) / width; maxstripes = (height + maxrps - 1) / maxrps; } if (comp == JPEG) { maxrps = ((maxrps + 8 - 1) / 8) * 8; maxstripes = (height + maxrps - 1) / maxrps; } DEFactory.StripOffsetsDE offsets = new DEFactory.StripOffsetsDE(maxstripes); ifd.add(offsets); // 273 ifd.add(new DEFactory.SamplesPerPixelDE(3)); // 277 ifd.add(new DEFactory.RowsPerStripDE(maxrps)); // 278 DEFactory.StripByteCountsDE counts = new DEFactory.StripByteCountsDE(maxstripes); ifd.add(counts); // 279 if (param == null) { ifd.add(new DEFactory.XResolutionDE(72.0)); // 282 ifd.add(new DEFactory.YResolutionDE(72.0)); // 283 } else { ifd.add(new DEFactory.XResolutionDE(param.getXResolution())); // 282 ifd.add(new DEFactory.YResolutionDE(param.getYResolution())); // 283 } ifd.add(new DEFactory.ResolutionUnitDE(Inch)); // 296 ByteArrayOutputStream baos = new ByteArrayOutputStream(); OutputStream os = baos; JPEGOutputStream jpegos = null; if (comp == JPEG) { // add JPEGTables tag jpegos = new JPEGOutputStream(baos); int quality = (param == null) ? 50 : (int) (param.getCompressionQuality() * 100); jpegos.setZZQuantizationTable(0, JPEGConstants.LQT, quality); jpegos.setRawDCHuffmanTable(0, JPEGConstants.HLDCTable); jpegos.setRawACHuffmanTable(0, JPEGConstants.HLACTable); jpegos.defineQuantizationTables(); jpegos.defineHuffmanTables(); jpegos.close(); DEFactory.JPEGTablesDE jpegtables = new DEFactory.JPEGTablesDE(baos.toByteArray()); ifd.add(jpegtables); // 347 baos.reset(); os = jpegos; } WritableRaster raster = image.getRaster(); DataBufferInt buffer = (DataBufferInt) raster.getDataBuffer(); int[] imgdata = (int[]) buffer.getData(); int index = 0; for (int y = 0; y < height; y += maxrps) { /* Assume rgb image. Each strip: evaluate r g b colour save in byte array write to image file */ if ((height - y) < maxrps) { maxrps = height - y; } if (jpegos != null) { // jpeg: SOI,SOF,SOS marker jpegos.startOfImage(); int[] hv = {0x11, 0x11, 0x11}; // (Hi<<4)|Vi int[] q = {0, 0, 0}; // quantization table 0 jpegos.startOfFrame(maxrps, width, hv, q); int[] sel = {0, 0, 0}; // DC,AC code table 0 jpegos.startOfScan(sel); } for (int i = 0; i < maxrps; i++) { // write RGB data for (int x = 0; x < width; x++) { int c = imgdata[x + (y + i) * width]; os.write((c >> 16) & 0x000000FF); os.write((c >> 8) & 0x000000FF); os.write(c & 0x000000FF); } } os.close(); // jpeg: EOI marker byte[] data = baos.toByteArray(); counts.setCount(index, data.length); // update ifd strip counter array offsets.setOffset(index, out.getStreamPosition()); // update ifd image data offset array out.write(data); // write to image stream baos.reset(); index++; } return ifd; } catch (Exception e) { e.printStackTrace(); throw new IOException(getClass().getName() + ".writeRGBImage:\n\t" + e.getMessage()); } }
private IFD writeBModHufImage( ImageOutputStream out, BufferedImage image, TIFFImageWriteParam param) throws IOException { try { int width = image.getWidth(); int height = image.getHeight(); IFD ifd = new IFD(); // entries need to be in tag order ! ifd.add(new DEFactory.NewSubfileTypeDE(2)); // 254 single page of multipage file ifd.add(new DEFactory.ImageWidthDE(width)); // 256 ifd.add(new DEFactory.ImageLengthDE(height)); // 257 ifd.add(new DEFactory.CompressionDE(CCITTGROUP3MODHUFFMAN)); // 259 ifd.add(new DEFactory.PhotometricInterpretationDE(WhiteIsZero)); // 262 int maxrps, maxstripes; // max RowsPerStrip if ((1 << 13) <= width) { maxrps = 1; maxstripes = height; // one row per stripe } else { maxrps = (1 << 13) / width; maxstripes = (height + maxrps - 1) / maxrps; } DEFactory.StripOffsetsDE offsets = new DEFactory.StripOffsetsDE(maxstripes); ifd.add(offsets); // 273 ifd.add(new DEFactory.RowsPerStripDE(maxrps)); // 278 DEFactory.StripByteCountsDE counts = new DEFactory.StripByteCountsDE(maxstripes); ifd.add(counts); // 279 if (param == null) { ifd.add(new DEFactory.XResolutionDE(72.0)); // 282 ifd.add(new DEFactory.YResolutionDE(72.0)); // 283 } else { ifd.add(new DEFactory.XResolutionDE(param.getXResolution())); // 282 ifd.add(new DEFactory.YResolutionDE(param.getYResolution())); // 283 } ifd.add(new DEFactory.ResolutionUnitDE(Inch)); // 296 int index = 0; for (int y = 0; y < height; y += maxrps) { /* Assume bilevel image (black/white[=-1]) Each strip: count run length encode into modified hufman codes swap bits save in byte array write to image file */ ByteArrayOutputStream baos = new ByteArrayOutputStream(); BitSwapOutputStream bsos = new BitSwapOutputStream(baos); ModHuffmanOutputStream mhos = new ModHuffmanOutputStream(bsos); RLEOutputStream rlos = new RLEOutputStream(mhos, 3); // rgb = 3 bytes per sample code word (not needed here) for (int i = 0; i < maxrps; i++) { if ((y + i) == height) { break; } // last strip might have less rows rlos.setStartCodeWord(-1); // white run first for (int x = 0; x < width; x++) { rlos.write(image.getRGB(x, y + i)); } rlos.flush(); // write padding after ever image row } rlos.close(); byte[] data = baos.toByteArray(); counts.setCount(index, data.length); // update ifd strip counter array offsets.setOffset(index, out.getStreamPosition()); // update ifd image data offset array out.write(data); // write to image stream index++; } return ifd; } catch (Exception e) { e.printStackTrace(); throw new IOException(getClass().getName() + ".writeBModHufImage:\n\t" + e.getMessage()); } }