我想调整.tiff文件的大小。我使用JAI工具包来调整不同类型的图像。以下是我试图实施的内容:
int imageWidth = 330;
int imageHeight = 490;
BufferedImage tempImage = new BufferedImage(imageWidth, imageHeight,BufferedImage.TYPE_INT_RGB);
Graphics2D graphics2D = tempImage.createGraphics();
graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BICUBIC);
graphics2D.drawImage(tempImage, 0, 0, imageWidth, imageHeight, null);
graphics2D.dispose();
File outfile = new File("D:/Work/YoursGallery/output.tif");
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(outfile));
FileSeekableStream ss = new FileSeekableStream("D:/Work/YoursGallery/sample1.tif");
ImageDecoder dec = ImageCodec.createImageDecoder("tiff", ss, null);
TIFFEncodeParam param = new TIFFEncodeParam();
param.setTileSize(tempImage.getWidth(), tempImage.getHeight());
TIFFImageEncoder encoder = (TIFFImageEncoder) TIFFCodec.createImageEncoder("tiff", out, param);
encoder.encode(dec.decodeAsRenderedImage());
out.close();
创建的图像与原始图像具有相同的尺寸。任何人都可以告诉我们这是什么问题吗?
以下是我用来测试它的样本tiff图像。
提前致谢。
答案 0 :(得分:1)
那是因为你正在写出仍然是原始图像的tempImage。
graphics2D.drawImage(image, 0, 0, imageWidth, imageHeight, null);
将其更改为:
graphics2D.drawImage(tempImage, 0, 0, imageWidth, imageHeight, null);
或更改您的其他代码以写出图像而不是tempImage
- 编辑 -
确定尝试2.可能源头和目的地相同是愚蠢的。
BufferedImage bsrc = ImageIO.read(new File(src));
BufferedImage bdest =
new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bdest.createGraphics();
AffineTransform at =
AffineTransform.getScaleInstance((double)width/bsrc.getWidth(),
(double)height/bsrc.getHeight());
g.drawRenderedImage(bsrc,at);
试试:)
答案 1 :(得分:0)
1)你正在自己编写tempImage:
graphics2D.drawImage(tempImage, 0, 0, imageWidth, imageHeight, null);
应该是:
graphics2D.drawImage(originalImage, 0, 0, imageWidth, imageHeight, null);
2)你正在写你刚刚读过的图像(你为什么要读它?):
encoder.encode(dec.decodeAsRenderedImage());
应该是:
encoder.encode(tempImage);