ccv.rar_CCV_ccv中文

/* * IMAGE EXTRACTION LIBRARY * * DISCOVIR - Distributed Content-based Visual Information Retrieval System on Peer-to-Peer(P2P) Network * http://www.cse.cuhk.edu.hk/~miplab/discovir * * Copyright (C) 2002 Multimedia Information Processing Laboratory * http://www.cse.cuhk.edu.hk/~miplab * The Chinese University of Hong Kong * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * */ package org.discovir.imageprocessing; import java.awt.*; import java.awt.image.*; import javax.imageio.*; import java.io.*; import java.awt.geom.*; /** * Self Defined image class for the ease of reading image and passing to feature extraction module for processing */ public class DiscovirImage { /** * The Actual Image content */ private BufferedImage _image; /** * File name of the image file */ private String _filename; /** * Color Model used in the _image */ private ColorModel _colorModel; /** * Constructor accpeting a full path filename */ public DiscovirImage (String filename) { _image=null; this._filename=filename; } /** * Constructor accpeting a file handle of type java.io.File */ public DiscovirImage (File fileHandle) { _image=null; try { this._filename=fileHandle.getCanonicalPath(); } catch (IOException e) { e.printStackTrace(); } } /** * Constructor accepting a java.awt.image.BufferedImage */ public DiscovirImage (BufferedImage image) { this._image=image; this._filename="temp"; } /** * Constructor accepting a java.awt.image.BufferedImage */ public DiscovirImage (BufferedImage image, String filename) { this._image=image; this._filename=filename; } /** * Function to acutally load a image from the file to memory * return : true - read successfully * : false - read unsuccessfully */ public boolean readImage() { try { _image=ImageIO.read(new File(_filename)); _colorModel=_image.getColorModel(); } catch (Exception e) { return false; } return true; } /** * Get the width of image */ public int getWidth () { return _image.getWidth(); } /** * Get the height of image */ public int getHeight () { return _image.getHeight(); } /** * Get full path file name of the image */ public String getFileName () { return _filename; } /** * Get the packed pixel content of whole image * return int[] - an array showing the [(packedRGB)(packedRGB)(packedRGB)....] value of the image in a row by row manner */ public int[] getPackedRGBPixel () { return _image.getRGB(0,0,_image.getWidth(),_image.getHeight(),null,0,_image.getWidth()); } /** * Get the pixel content of whole image * return int[] - an array showing the [(RGB)(RGB)(RGB)....] value of the image in a row by row manner */ public int[] getRGBPixel () { int size=_image.getHeight()*_image.getWidth(); int[] pixel=new int[size]; int[] pixels=new int[size*3]; PixelGrabber pg = new PixelGrabber(_image, 0, 0, _image.getWidth(), _image.getHeight(), pixel, 0, _image.getWidth()); try { pg.grabPixels(); } catch (InterruptedException e) { e.printStackTrace(); return null; } if ((pg.getStatus() & ImageObserver.ABORT) != 0) { System.out.println("Error in grabbing pixel"); return null; } for (int i=0;i<size;i++) { pixels[i*3] =(pixel[i] >> 16) & 0xff; pixels[i*3+1]=(pixel[i] >> 8) & 0xff; pixels[i*3+2]=(pixel[i] ) & 0xff; //pixels[i*3]=_colorModel.getRed(pixel[i]); //pixels[i*3+1]=_colorModel.getGreen(pixel[i]); //pixels[i*3+2]=_colorModel.getBlue(pixel[i]); } return (pixels); } /** * Get the RGB pixel value of a specific point sepcified by x,y * return : and int value wiht RGB value packed of that particular pixel */ public int getPackedRGBPixel (int x, int y) { return _image.getRGB(x,y); } /** * Get the RGB pixel value of a specific point sepcified by x,y * return : and int array of the form [RGB] of that particular pixel */ public int[] getRGBPixel (int x, int y) { int[] pixel=new int[1]; int[] pixels=new int[3]; PixelGrabber pg = new PixelGrabber(_image, x, y, 1, 1, pixel, 0, _image.getWidth()); try { pg.grabPixels(); } catch (InterruptedException e) { e.printStackTrace(); return null; } if ((pg.getStatus() & ImageObserver.ABORT) != 0) { System.out.println("Error in grabbing pixel"); return null; } pixels[0]=(pixel[0] >> 16) & 0xff; pixels[1]=(pixel[0] >> 8) & 0xff; pixels[2]=(pixel[0] ) & 0xff; return (pixels); } /** * Given a full path filename and the width and height, write the thumbnail version of image to that file * the output format will be in jpeg * return : true thumbnail generation success * false thumbnail generation fail */ public boolean generateThumbnail (String filename, int width, int height) { int originalWidth=_image.getWidth(); int originalHeight=_image.getHeight(); double x=(double)width/(double)originalWidth; double y=(double)height/(double)originalHeight; AffineTransformOp transformFilter=new AffineTransformOp(new AffineTransform(x,0.0,0.0,y,0.0,0.0),AffineTransformOp.TYPE_NEAREST_NEIGHBOR); // 5 because I don't konw the name of the color model, it should be BufferedImage.xxx BufferedImage dest=new BufferedImage(width,height,5); transformFilter.filter(_image,dest); File output=new File(filename); try { ImageIO.write(dest,"jpg",output); } catch (IOException e) { return false; } return true; } /** * Given a full path filename , write the thumbnail version of image to that file * the output format will be in jpeg