[急急急急急急急急急急]JAVA程式編寫一問(將圖片轉(zhuǎn)至ASCII)

//1.jpg是原圖，1.txt是轉(zhuǎn)換后的文本，2.jpg是轉(zhuǎn)換后的圖像，圖片寬度超過(guò)1024請(qǐng)用notepad++查看轉(zhuǎn)換后的文本哦

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import?java.awt.image.BufferedImage;

import?java.io.File;

import?java.io.FileWriter;

import?javax.imageio.ImageIO;

public?class?dd?{

public?static?void?main(String[]?args)?throws?Exception?{

char[][]?result=imageToASCII(new?File("D:/1.jpg"));

FileWriter?fw=new?FileWriter(new?File("D:/1.txt"),true);

for?(int?i=0;iresult.length;i++){

fw.write(result[i]);

}

fw.flush();

fw.close();

}

public?static?char[][]?imageToASCII(File?f)?throws?Exception{

BufferedImage?img1?=?ImageIO.read(f);

int?h?=?img1.getHeight();

int?w?=?img1.getWidth();

BufferedImage?img2?=?new?BufferedImage(w,h,img1.getType());

char[][]?gray?=?new?char[h][w+2];

for?(int?x?=?0;?x??h;?x++)?{

for?(int?y?=?0;?y??w;?y++)?{

int?argb?=?img1.getRGB(y,?x);

int?r?=?(argb??16)??0xFF;

int?g?=?(argb??8)??0xFF;

int?b?=?(argb??0)??0xFF;

int?grayPixel?=?(int)(0.299*r+0.587*g+0.114*b);

if?(grayPixel=230)?gray[x][y]='?';

else?if?(grayPixel=200)?gray[x][y]='.';

else?if?(grayPixel=180)?gray[x][y]='*';

else?if?(grayPixel=160)?gray[x][y]=':';

else?if?(grayPixel=130)?gray[x][y]='o';

else?if?(grayPixel=100)?gray[x][y]='';

else?if?(grayPixel=70)?gray[x][y]='8';

else?if?(grayPixel=50)?gray[x][y]='#';

else?gray[x][y]='@';

System.out.print(gray[x][y]);

img2.setRGB(y,?x,?(grayPixel16)+(grayPixel8)+grayPixel);

}

gray[x][w]='\r';gray[x][w+1]='\n';

System.out.println();

}

ImageIO.write(img2,?"jpg",?new?File("D:/2.jpg"));

return?gray;

}

}

怎么樣用Java實(shí)現(xiàn)將一張圖片轉(zhuǎn)成字符畫？？

#首先在D盤寫一個(gè)文件"temp.html"，如下內(nèi)容

!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"

html

head

title圖片轉(zhuǎn)文本/title

meta http-equiv="content-type" content="text/html; charset=gbk"

style type="text/css"

body {

font-family: 宋體; line-height: 0.8em; letter-spacing: 0px; font-size: 8px;

}

/style

/head

body

${content}

/body

/html

#在D盤放一個(gè)圖片（放小一點(diǎn)的）"a.jpg"

#運(yùn)行如下JAVA代碼：

import java.awt.Color;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStreamReader;

import javax.imageio.ImageIO;

public class Test {

/** 此處設(shè)置灰度字符，此處只用十個(gè)字符，可以設(shè)置更多 */

private static char[] cs = new char[] { '.', ',', '*', '+', '=', '', '$', '@', '#', ' ' };

public static void main(String[] args) throws IOException {

// 讀取圖片

BufferedImage bfedimage = ImageIO.read(new File("D:\\a.jpg"));

// 圖片轉(zhuǎn)字符串后的數(shù)組

char[][] css = new char[bfedimage.getWidth()][bfedimage.getHeight()];

for (int x = 0; x bfedimage.getWidth(); x++) {

for (int y = 0; y bfedimage.getHeight(); y++) {

int rgb = bfedimage.getRGB(x, y);

Color c = new Color(rgb);

// 得到灰度值

int cc = (c.getRed() + c.getGreen() + c.getBlue()) / 3;

css[x][y] = cs[(int) ((cc * 10 - 1) / 255)];

}

}

// 取得模板HTML

String temp = readFile(new File("D:\\temp.html"),"gbk");

StringBuffer sb = new StringBuffer();

// 開始拼接內(nèi)容

for (int y = 0; y css[0].length; y++) {

for (int x = 0; x css.length; x++) {

sb.append(css[x][y]);

}

sb.append("\r\n");

}

System.out.println(sb.toString());

// 生成文件

String content = toHTML(sb.toString());

String filecontent = replaceStrAllNotBack(temp, "${content}", content);

writeFile(new File("D:\\content.html"), filecontent, "gbk");

}

public static String toHTML(String s) {

s = s.replaceAll("", "");

s = s.replaceAll(" ", "?");

s = s.replaceAll("", "");

s = s.replaceAll("", "");

s = s.replaceAll("\"", """);

s = s.replaceAll("\\\r\\\n", "br/");

s = s.replaceAll("\\\r", "br/");

s = s.replaceAll("\\\n", "br/");

return s;

}

public static String replaceStrAllNotBack(String str, String strSrc, String strDes) {

StringBuffer sb = new StringBuffer(str);

int index = 0;

while ((index = sb.indexOf(strSrc, index)) != -1) {

sb.replace(index, index + strSrc.length(), strDes);

index += strDes.length();

}

return sb.toString();

}

/**

* 讀文件(使用默認(rèn)編碼)

*

* @param file

* @return 文件內(nèi)容

* @throws IOException

*/

public static String readFile(File file, String charset) throws IOException {

InputStreamReader fr = new InputStreamReader(new FileInputStream(file), charset);

StringBuffer sb = new StringBuffer();

char[] bs = new char[1024];

int i = 0;

while ((i = fr.read(bs)) != -1) {

sb.append(bs, 0, i);

}

fr.close();

return sb.toString();

}

/**

* 寫文件

*

* @param file

* @param string

* 字符串

* @param encoding

* 編碼

* @return 文件大小

* @throws IOException

*/

public static int writeFile(File file, String string, String encoding) throws IOException {

FileOutputStream fos = new FileOutputStream(file);

try {

byte[] bs = string.getBytes(encoding);

fos.write(bs);

return bs.length;

} finally {

fos.close();

}

}

}

#打開"D:\content.html"文件看效果吧。

有什么問題可以聯(lián)系我。

關(guān)于通過(guò)java實(shí)現(xiàn)圖片格式的轉(zhuǎn)換

import java.io.*; import java.awt.*; import java.awt.image.*;

import java.awt.Graphics; import java.awt.color.ColorSpace;

import javax.imageio.ImageIO;

public class ImageCut {

/**

* 縮放圖像

* @param srcImageFile源圖像文件地址

* @param result縮放后的圖像地址

* @param scale縮放比例

* @param flag縮放選擇:true 放大; false 縮小;

*/

public static void scale(String srcImageFile, String result, int scale,

boolean flag) {

try {

BufferedImage src = ImageIO.read(new File(srcImageFile)); // 讀入文件

int width = src.getWidth(); // 得到源圖寬

int height = src.getHeight(); // 得到源圖長(zhǎng)

if (flag) {// 放大

width = width * scale;

height = height * scale;

} else {// 縮小

width = width / scale;

height = height / scale;

}

Image image = src.getScaledInstance(width, height,

Image.SCALE_DEFAULT);

BufferedImage tag = new BufferedImage(width, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = tag.getGraphics();

g.drawImage(image, 0, 0, null); // 繪制縮小后的圖

g.dispose();

ImageIO.write(tag, "JPEG", new File(result));// 輸出到文件流

} catch (IOException e) {

e.printStackTrace();

}

}

/**

* 圖像切割

* @param srcImageFile源圖像地址

* @param descDir切片目標(biāo)文件夾

* @param destWidth目標(biāo)切片寬度

* @param destHeight目標(biāo)切片高度

*/

public static void cut(String srcImageFile, String descDir, int destWidth,

int destHeight) {

try {

Image img;

ImageFilter cropFilter; // 讀取源圖像

BufferedImage bi = ImageIO.read(new File(srcImageFile));

int srcWidth = bi.getHeight(); // 源圖寬度

int srcHeight = bi.getWidth(); // 源圖高度

if (srcWidth destWidth srcHeight destHeight) {

Image image = bi.getScaledInstance(srcWidth, srcHeight,

Image.SCALE_DEFAULT);

destWidth = 200; // 切片寬度

destHeight = 150; // 切片高度

int cols = 0; // 切片橫向數(shù)量

int rows = 0; // 切片縱向數(shù)量

// 計(jì)算切片的橫向和縱向數(shù)量

if (srcWidth % destWidth == 0) {

cols = srcWidth / destWidth;

} else {

cols = (int) Math.floor(srcWidth / destWidth) + 1;

}

if (srcHeight % destHeight == 0) {

rows = srcHeight / destHeight;

} else {

rows = (int) Math.floor(srcHeight / destHeight) + 1;

}

// 循環(huán)建立切片

// 改進(jìn)的想法:是否可用多線程加快切割速度

for (int i = 0; i rows; i++) {

for (int j = 0; j cols; j++) {

// 四個(gè)參數(shù)分別為圖像起點(diǎn)坐標(biāo)和寬高

// 即: CropImageFilter(int x,int y,int width,int height)

cropFilter = new CropImageFilter(j * 200, i * 150,

destWidth, destHeight);

img = Toolkit.getDefaultToolkit().createImage(

new FilteredImageSource(image.getSource(),

cropFilter));

BufferedImage tag = new BufferedImage(destWidth,

destHeight, BufferedImage.TYPE_INT_RGB);

Graphics g = tag.getGraphics();

g.drawImage(img, 0, 0, null); // 繪制縮小后的圖

g.dispose();

// 輸出為文件

ImageIO.write(tag, "JPEG", new File(descDir

+ "pre_map_" + i + "_" + j + ".jpg"));

}

}

}

} catch (Exception e) {

e.printStackTrace();

}

}

// 圖像類型轉(zhuǎn)換GIF-JPG GIF-PNG PNG-JPG PNG-GIF(X)

public static void convert(String source, String result) {

try {

File f = new File(source);

f.canRead();

f.canWrite();

BufferedImage src = ImageIO.read(f);

ImageIO.write(src, "JPG", new File(result));

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

// 彩色轉(zhuǎn)為黑白

public static void gray(String source, String result) {

try {

BufferedImage src = ImageIO.read(new File(source));

ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);

ColorConvertOp op = new ColorConvertOp(cs, null);

src = op.filter(src, null);

ImageIO.write(src, "JPEG", new File(result));

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String［］ args) {

//cut("e:/1.jpg", "e:/t/", 200, 150);

}

}

import java.io.*; import java.awt.*; import java.awt.image.*;

import java.awt.Graphics; import java.awt.color.ColorSpace;

import javax.imageio.ImageIO;

public class ImageCut {

/**

* 縮放圖像

* @param srcImageFile源圖像文件地址

* @param result縮放后的圖像地址

* @param scale縮放比例

* @param flag縮放選擇:true 放大; false 縮小;

*/

public static void scale(String srcImageFile, String result, int scale,

boolean flag) {

try {

BufferedImage src = ImageIO.read(new File(srcImageFile)); // 讀入文件

int width = src.getWidth(); // 得到源圖寬

int height = src.getHeight(); // 得到源圖長(zhǎng)

if (flag) {// 放大

width = width * scale;

height = height * scale;

} else {// 縮小

width = width / scale;

height = height / scale;

}

Image image = src.getScaledInstance(width, height,

Image.SCALE_DEFAULT);

BufferedImage tag = new BufferedImage(width, height,

BufferedImage.TYPE_INT_RGB);

Graphics g = tag.getGraphics();

g.drawImage(image, 0, 0, null); // 繪制縮小后的圖

g.dispose();

ImageIO.write(tag, "JPEG", new File(result));// 輸出到文件流

} catch (IOException e) {

e.printStackTrace();

}

}

/**

* 圖像切割

* @param srcImageFile源圖像地址

* @param descDir切片目標(biāo)文件夾

* @param destWidth目標(biāo)切片寬度

* @param destHeight目標(biāo)切片高度

*/

public static void cut(String srcImageFile, String descDir, int destWidth,

int destHeight) {

try {

Image img;

ImageFilter cropFilter; // 讀取源圖像

BufferedImage bi = ImageIO.read(new File(srcImageFile));

int srcWidth = bi.getHeight(); // 源圖寬度

int srcHeight = bi.getWidth(); // 源圖高度

if (srcWidth destWidth srcHeight destHeight) {

Image image = bi.getScaledInstance(srcWidth, srcHeight,

Image.SCALE_DEFAULT);

destWidth = 200; // 切片寬度

destHeight = 150; // 切片高度

int cols = 0; // 切片橫向數(shù)量

int rows = 0; // 切片縱向數(shù)量

// 計(jì)算切片的橫向和縱向數(shù)量

if (srcWidth % destWidth == 0) {

cols = srcWidth / destWidth;

} else {

cols = (int) Math.floor(srcWidth / destWidth) + 1;

}

if (srcHeight % destHeight == 0) {

rows = srcHeight / destHeight;

} else {

rows = (int) Math.floor(srcHeight / destHeight) + 1;

}

// 循環(huán)建立切片

// 改進(jìn)的想法:是否可用多線程加快切割速度

for (int i = 0; i rows; i++) {

for (int j = 0; j cols; j++) {

// 四個(gè)參數(shù)分別為圖像起點(diǎn)坐標(biāo)和寬高

// 即: CropImageFilter(int x,int y,int width,int height)

cropFilter = new CropImageFilter(j * 200, i * 150,

destWidth, destHeight);

img = Toolkit.getDefaultToolkit().createImage(

new FilteredImageSource(image.getSource(),

cropFilter));

BufferedImage tag = new BufferedImage(destWidth,

destHeight, BufferedImage.TYPE_INT_RGB);

Graphics g = tag.getGraphics();

g.drawImage(img, 0, 0, null); // 繪制縮小后的圖

g.dispose();

// 輸出為文件

ImageIO.write(tag, "JPEG", new File(descDir

+ "pre_map_" + i + "_" + j + ".jpg"));

}

}

}

} catch (Exception e) {

e.printStackTrace();

}

}

// 圖像類型轉(zhuǎn)換GIF-JPG GIF-PNG PNG-JPG PNG-GIF(X)

public static void convert(String source, String result) {

try {

File f = new File(source);

f.canRead();

f.canWrite();

BufferedImage src = ImageIO.read(f);

ImageIO.write(src, "JPG", new File(result));

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

// 彩色轉(zhuǎn)為黑白

public static void gray(String source, String result) {

try {

BufferedImage src = ImageIO.read(new File(source));

ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);

ColorConvertOp op = new ColorConvertOp(cs, null);

src = op.filter(src, null);

ImageIO.write(src, "JPEG", new File(result));

} catch (IOException e) {

e.printStackTrace();

}

}

public static void main(String［］ args) {

//cut("e:/1.jpg", "e:/t/", 200, 150);

}

}

參考文獻(xiàn)：

當(dāng)前標(biāo)題：java圖片轉(zhuǎn)文本代碼 java 圖片轉(zhuǎn)字符串
標(biāo)題鏈接：http://www.chinadenli.net/article18/dddsdgp.html

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