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POError converting PNG to TIFF-Java
 

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  1. POError converting PNG to TIFF-Java
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    <p>HI I am working on the following snippet which is supposed to convert my png file to tiff.</p> <pre><code> String fileName = "4848970_1"; // String fileName = "color"; String inFileType = ".PNG"; String outFileType = ".TIFF"; File fInputFile = new File("C:\\Users\\abc\\Downloads\\image2.png"); InputStream fis = new BufferedInputStream(new FileInputStream(fInputFile)); ImageReaderSpi spi = new PNMImageReaderSpi(); ImageReader reader = spi.createReaderInstance(); ImageInputStream iis = ImageIO.createImageInputStream(fis); reader.setInput(iis, true); BufferedImage bi = reader.read(0); int[] xi = bi.getSampleModel().getSampleSize(); for (int i : xi) { System.out.println("bitsize " + i); } ImageWriterSpi tiffspi = new TIFFImageWriterSpi(); TIFFImageWriter writer = (TIFFImageWriter) tiffspi.createWriterInstance(); // TIFFImageWriteParam param = (TIFFImageWriteParam) writer.getDefaultWriteParam(); TIFFImageWriteParam param = new TIFFImageWriteParam(Locale.US); String[] strings = param.getCompressionTypes(); for (String string : strings) { System.out.println(string); } //param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); //param.setCompressionType("LZW"); File fOutputFile = new File("C:\\Users\\abc\\Downloads\\" + fileName + outFileType); OutputStream fos = new BufferedOutputStream(new FileOutputStream(fOutputFile)); ImageOutputStream ios = ImageIO.createImageOutputStream(fos); writer.setOutput(ios); writer.write(null, new IIOImage(bi, null, null), param); ios.flush(); writer.dispose(); ios.close(); </code></pre> <p>But this gives me following error</p> <pre><code>Exception in thread "main" java.lang.RuntimeException: What in the stream isn't a PNM image. at com.sun.media.imageioimpl.plugins.pnm.PNMImageReader.readHeader(PNMImageReader.java:187) at com.sun.media.imageioimpl.plugins.pnm.PNMImageReader.read(PNMImageReader.java:301) at javax.imageio.ImageReader.read(Unknown Source) at com.imageconv.TiffImage.main(TiffImage.java:40) </code></pre> <p>Is it that its unable to read the PNG file or it recognises it as a non png file.Am I wrong anywhere?</p>
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