Atitit. Image processing JPG image compression cleanup junk image Java version

Atitit. image Processing jpg image compression cleanup trash picture Java version

1. Clean picture compressed picture size 1

2. So to use ImageWriter 1

3. Thumbnails quality compression builder. outputquality (0.9); 2

4. handling of the Attilax framework Code 2

5. To an article that mentions how to control the quality of JPG images after compression 3

6. Reference 4

1. Clear the image compressed image size

Target :: 300kb>>>10kb.

Process Flow : £º scale, outputquality (0.5)

Cut crop,only top half ....

On the upload to a cloud disk , CP processing : SYSN

Work out a mini version of pic folder . was with a Ori Large Size Folder sync.. Remove the other don't ...

In the middle of not a picture to remove the k - lan ...

Author:: Old Wow's paw attilax Ayron, email:[email protected]

Reprint please indicate source: Http://blog.csdn.net/attilax

2.so to useImageWriter

ImageIO can support output in selected formats

But you can't set the quality yourself.

Iwp.setcompressionmode (imagewriteparam.mode_explicit); //Set whether to compress

3.ThumbnailsMass CompressionBuilder.outputquality(0.9);

00001. builder. outputquality (0.9); //parameter is floating point, between 0-1

Mass compression

00001. builder. outputquality (0.9); //parameter is floating point, between 0-1

4. Attilaxprocessing of the frameworkCode

Atibrow

Public void scale4clr (string jpg, string deboxjpg, int width)

throws IOException {

Image img = imageio.read (new File (jpg));

int width2 = img. getwidth (null);

if (width2<width+2)

{System. out. println ("--skip:"+jpg);

return;

}

// int wid = width2-(Border * 2);

Double Scale_perst= (double)width/(double)width2;

Double nowhit=img. getheight (null);

Double Nowwit=scale_perst*width2;

int Nowhit_haf= (int) img. getheight (null)/2;

// int Hit = Img.getheight (null)-(Border * 2);

Thumbnails.of (jpg). Scale (Scale_perst). Sourceregion (positions. Top_left, (int) width2, nowhit_haf). OutputFormat ("JPG"). Outputquality ( 0.5). ToFile (deboxjpg);

}

5.to an article that mentions how to control the quality of JPG images after compression

http://www.universalwebservices.net/web-programming-resources/java/adjust-jpeg-image-compression-quality-when-saving-images-in-java/
The point is, I'm proposing here .
imagewriter writer;//Get ImageWriter Object yourself
Imagewriteparam IWP = Writer.getdefaultwriteparam ();
Iwp.setcompressionmode (imagewriteparam.mode_explicit);
//Parameters are 0 and 1
//1 To set minimum compression to maintain maximum picture quality
iwp.setcompressionquality (1);
File File = new file (OUTPUTFILE);
fileimageoutputstream output = new Fileimageoutputstream (file);
writer.setoutput (output);
iioimage image = new Iioimage (bufferedimage, NULL, NULL);
//write pictures
writer.write (null, image, IWP);
writer.dispose ()

6. Reference

JAVA Image Processing Library thumbnails-The Hadron it blog. htm

Image compression by mass, converted to character array summary-Kfhzy's Column-Blog channel-CSDN.NET.htm

How to adjust JEPG image compression with Java? -Java-know. htm

The picture in Java is compressed by quality again summary--iteye technology website. htm

Atitit. Image processing JPG image compression cleanup junk image Java version