图片处理_1图片格式转换

1、支持jpg、png、gif格式的互转，不支持tif，bmp格式的转换

 

   publicstatic  void converter(File imgFile,Stringformat,File formatFile)
    throws IOException{
        BufferedImage bIMG =ImageIO.read(imgFile);
        ImageIO.write(bIMG, format, formatFile);
  }

 

2、tif转jpg 与  //jpg转tif

//tif转jpg

public static void tif2jpeg(InputStream in,OutputStream out){
  try{
  ImageDecoder decoder =ImageCodec.createImageDecoder("tiff", in, null);
       RenderedImage ri = decoder.decodeAsRenderedImage();
       
  JPEGEncodeParam JPEGparam = newJPEGEncodeParam();

  JPEGparam.setQuality(Float.MAX_VALUE);
  
  ImageEncoder encoder =ImageCodec.createImageEncoder("jpeg", out,JPEGparam);
  encoder.encode(ri);
  } catch (IOException e) {
   e.printStackTrace();
  }
 }
 

//jpg转tif
 public static void jpeg2tif(InputStreamin,OutputStream out) {
  try{
  ImageDecoder decoder =ImageCodec.createImageDecoder("jpeg", in, null);
       RenderedImage ri = decoder.decodeAsRenderedImage();
       
       TIFFEncodeParam TIFFparam = new TIFFEncodeParam();
       int pixelSize = ri.getColorModel().getPixelSize();
    if (1 ==pixelSize) {
    TIFFparam.setCompression(TIFFEncodeParam.COMPRESSION_GROUP3_2D);
    } else if (8== pixelSize) {
    TIFFparam.setCompression(TIFFEncodeParam.COMPRESSION_DEFLATE);
    } else if(24 == pixelSize) {
    TIFFparam.setCompression(TIFFEncodeParam.COMPRESSION_JPEG_TTN2);
    }
  ImageEncoder encoder =ImageCodec.createImageEncoder("tiff", out,TIFFparam);
  encoder.encode(ri);
  } catch (IOException e) {
   e.printStackTrace();
  }
 }