分割图片

private static void splitImage() throws IOException {

String originalImg = "C:\\img\\split\\a380_1280x1024.jpg";

// 读入大图

File file = new File(originalImg);

FileInputStream fis = new FileInputStream(file);

BufferedImage image = ImageIO.read(fis);

// 分割成4*4(16)个小图

int rows = 4;

int cols = 4;

int chunks = rows * cols;

// 计算每个小图的宽度和高度

int chunkWidth = image.getWidth() / cols;

int chunkHeight = image.getHeight() / rows;

int count = 0;

BufferedImage imgs[] = new BufferedImage[chunks];

for (int x = 0; x < rows; x++) {

for (int y = 0; y < cols; y++) {

//设置小图的大小和类型

imgs[count] = new BufferedImage(chunkWidth, chunkHeight, image.getType());

//写入图像内容

Graphics2D gr = imgs[count++].createGraphics();

gr.drawImage(image, 0, 0,

chunkWidth, chunkHeight,

chunkWidth* y, chunkHeight * x,

chunkWidth * y + chunkWidth,

chunkHeight * x + chunkHeight, null);

gr.dispose();

}

}

// 输出小图

for (int i = 0; i < imgs.length; i++) {

ImageIO.write(imgs[i], "jpg", new File("C:\\img\\split\\img" + i + ".jpg"));

}

System.out.println("完成分割！");

}

拼接图片

private static void mergeImage() throws IOException {

int rows = 2;

int cols = 2;

int chunks = rows * cols;

int chunkWidth, chunkHeight;

int type;

//读入小图

File[] imgFiles = new File[chunks];

for (int i = 0; i < chunks; i++) {

imgFiles[i] = new File("C:\\img\\merge\\img" + i + ".jpg");

}

//创建BufferedImage

BufferedImage[] buffImages = new BufferedImage[chunks];

for (int i = 0; i < chunks; i++) {

buffImages[i] = ImageIO.read(imgFiles[i]);

}

type = buffImages[0].getType();

chunkWidth = buffImages[0].getWidth();

chunkHeight = buffImages[0].getHeight();

//设置拼接后图的大小和类型

BufferedImage finalImg = new BufferedImage(chunkWidth * cols, chunkHeight * rows, type);

//写入图像内容

int num = 0;

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

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

finalImg.createGraphics().drawImage(buffImages[num], chunkWidth * j, chunkHeight * i, null);

num++;

}

}

//输出拼接后的图像

ImageIO.write(finalImg, "jpeg", new File("C:\\img\\merge\\finalImg.jpg"));

System.out.println("完成拼接！");

}

大小: 41.1 KB

大小: 32.9 KB

大小: 15 KB

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2012-08-21 15:51

浏览 9947

评论

2 楼

州孓123

2015-08-25

大神我拼的图，图片品质不是优啊，图片有些失贞，和用ps拼的图有些差距。请问怎么才能拼出正常的图啊。谢谢啦

非常好，简单好用，有图有code！