tiff to jpeg 2004-01-21 - By SUBSCRIBE JSP-INTEREST Jatinder Pal Singh
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Hi all,
I am trying to convert a black and white tiff image to jpg/png. I am
reading tif image from binary file. First of all a 4kb file when written in
binary format expand to 57 kb :(. then when i try to convert this binary
file to jpeg format , the image is all blank. Please help. My sample code
is as below.
Regards,
Jatinder
-- ---- -----Writing tiff to binary file.-- ---- ------
FileSeekableStream stream = new FileSeekableStream(rawDataFile);
stream.seek(start);
stream.read(array,(int)0,(int)(end-start));
ByteArraySeekableStream byteStream = new ByteArraySeekableStream
(array);
img = (RenderedImage)JAI.create("stream",byteStream);
imageBuffer.put(img);
-- ---- ------Converting binary tiff to jpg.-- ---- ---- --
outRawData = new FileOutputStream(rawDataFile,true);
// getting image from image buffer
RenderedImage img = imageBuffer.get();
RenderedImageAdapter ria = new RenderedImageAdapter(img);
BufferedImage bi = ria.getAsBufferedImage();
ImageEncoder encoder = null;
com.sun.media.jai.codec.JPEGEncodeParam jpgParams = null;
if("JPEG".equalsIgnoreCase(targetImageType)
|| "JPG".equalsIgnoreCase(targetImageType)){
jpgParams = new com.sun.media.jai.codec.JPEGEncodeParam
();
jpgParams.setQuality(jpgQuality);
encoder = ImageCodec.createImageEncoder
("JPEG",outRawData, jpgParams);
System.out.println("making jpg file");
}
encoder.encode(bi);
outRawData.flush();
fileLength = rawDataFile.length();
if(fileLength == 0){
indexDataWriter.write(imageName+"|"+"0"+"|");
}
else{
indexDataWriter.write
(fileLength+"\n"+imageName+"|"+fileLength+"|");
}
indexDataWriter.flush();
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