image_deal.rar_ImageDeal_image web java_web_segmention_加水印_缩小

package com.xxx.imageDeal; import java.io.*; import java.awt.image.*; import java.io.OutputStream; import java.io.IOException; import ij.*; import ij.gui.*; import ij.process.*; /** * Class AnimatedGifEncoder - Encodes a GIF file consisting of one or more * frames. * * <pre> * * * Extensively Modified for ImagePlus * Extended to handle 8 bit Images with more complex Color lookup tables with transparency index * * Ryan Raz March 2002 * [email protected] * Version 1.01 * * Extensively Modified for ImagePlus * Extended to handle 8 bit Images with more complex Color lookup tables with transparency index * * Ryan Raz March 2002 * [email protected] * Version 1.01 Please report any bugs * * Operation Manual * * * 1) Load stack with 8 bit or RGB images it is possible to use the animated gif reader but because the color * table is lost it is best to also load a separate copy of the first image in the series this will allow * extraction of the original image color look up table (see 1below) * 2)Check the option list to bring up the option list. * 3)Experiment with the option list. I usually use a global color table to save space, set to do not dispose if * each consecutive image is overlayed on the previous image. * 4)Color table can be imported from another image or extracted from 8bit stack images or loaded as the * first 256 RGB triplets from a RGB images, the last mode takes either a imported image or current * stack and creates the color table from scratch. * * * To do list * * 1) Modify existing Animated Gif reader plug in to import in 8 bit mode (currently only works in * RGB mode. Right now the best way to alter an animated gif is to save the first image separately * and then read the single gif and use the plugin animated reader to read the animated gif to the * stack. Let this plugin encode the stack using the single gif's color table. * 2) Add support for background colors easy but I have no use for them * 3) RGB to 8 bit converter is a linear search. Needs to be replaced with sorted list and fast search. But * this update could cause problems with some types of gifs. Easy fix get a faster computer. * 4) Try updating NN color converter seems to be heavily weighted towards quantity of pixels. * example: * if there is 90% of the image covered in shades of one color or grey the 10% of other colors tend * to be poorly represented it over fits the shades and under fits the others. Works well if the * distribution is balanced. * 5) Add support for all sizes of Color Look Up tables. * 6) Re-code to be cleaner. This is my second Java program and I started with some code with too * many global variables and I added more switches so its a bit hard to follow. * * Credits for the base conversion codes * No copyright asserted on the source code of this class. May be used * for any purpose, however, refer to the Unisys LZW patent for restrictions * on use of the associated LZWEncoder class. Please forward any corrections * to [email protected]. * * @author Kevin Weiner, FM Software * @version 1.0 December 2000 * * * Example: * AnimatedGifEncoder e = new AnimatedGifEncoder(); * e.start(outputFileName); * e.addFrame(image1); * e.addFrame(image2); * &quot; &quot; &quot; * e.finish(); * </pre> * * */ public class GifEncoder { protected int width; // image size protected int height; protected boolean transparent = false; // transparent color if given protected int transIndex; // transparent index in color table protected int repeat = -1; // no repeat protected int delay = 50; // frame delay (hundredths) protected boolean started = false; // ready to output frames protected OutputStream out; protected ImagePlus image; // current frame protected byte[] pixels; // BGR byte array from frame protected byte[] indexedPixels; // converted frame indexed to palette protected int colorDepth; // number of bit planes protected byte[] colorTab; // RGB palette protected int lctSize = 7; // local color table size (bits-1) protected int dispose = 0; // disposal code (-1 = use default) protected boolean closeStream = false; // close stream when finished protected boolean firstFrame = true; protected boolean sizeSet = false; // if false, get size from first frame protected int sample = 2; // default sample interval for quantizer // distance should be small for small icons protected byte[] gct = null; // Global color table protected boolean gctused = false; // Set to true to use Global color table protected boolean autotransparent = false; // Set True if transparency // index coming from image 8 bit // only protected boolean GCTextracted = false; // Set if global color table // extracted from rgb image protected boolean GCTloadedExternal = false; // Set if global color table // loaded directly from // external image protected int GCTred = 0; // Transparent Color protected int GCTgrn = 0; // green protected int GCTbl = 0; // blue protected int GCTcindex = 0; // index into color table protected boolean GCTsetTransparent = false; // If true then Color table // transparency index is set protected boolean GCToverideIndex = false; // If true Transparent index is // set to index with closest // colors protected boolean GCToverideColor = false; // if true Color at Transparent // index is set to GCTred, // GCTgrn GCTbl /** * Adds next GIF frame. The frame is not written immediately, but is * actually deferred until the next frame is received so that timing data * can be inserted. Invoking <code>finish()</code> flushes all frames. If * <code>setSize</code> was not invoked, the size of the first image is * used for all subsequent frames. * * @param im * containing frame to write. * @return true if successful. */ public boolean addFrame(ImagePlus image) { if ((image == null) || !started) return false; boolean ok = true; try { if (firstFrame) { if (!sizeSet) { // use first frame's size setSize(image.getWidth(), image.getHeight()); } if (gctused) writeLSDgct(); // logical screen descriptior if (GCTloadedExternal) { // Using external image as color // table colorTab = gct; TransparentIndex(colorTab); // check transparency color writePalette(); // write global color table if (repeat >= 0) writeNetscapeExt(); // use NS app extension to indicate // reps } if (!gctused) { writeLSD(); if (repeat >= 0) writeNetscapeExt(); // use NS app extension to indicate // reps } firstFrame = false; } int type = image.getType(); // If indexed byte image then format does not need changing if ((type == 0) || (type == 3)) { // 8 bit images Process8bitCLT(image); } else if (type == 4) { // 4 for RGB packrgb(image); OverRideQuality(image.getWidth() * image.getHeight()); if (gctused && (gct == null)) { // quality should not depend on // image size analyzePixels(); // build global color table & map pixels colorTab = gct; TransparentIndex(colorTab); // check transparency color writePalette(); // write global color table if (repeat >= 0) writeNetscapeExt(); // use NS app extension to indicate // reps } else analyzePixels(); // build color table & map pixe