我正在尝试使用
Java 6对JPEG进行像素化并且没有太多运气.它需要与Java一起 – 不是像Photoshop那样的图像处理程序,它需要看起来像老学校 – 像这样：
有谁能够帮我？
解决方法
使用java.awt.image(
javadoc)和javax.imageio(
javadoc)API,您可以轻松地遍历图像的像素并自己执行像素化.
示例代码如下.您至少需要这些导入：javax.imageio.ImageIO,java.awt.image.BufferedImage,java.awt.image.Raster,java.awt.image.WritableRaster和java.io.File.
例：
// How big should the pixelations be?
final int PIX_SIZE = 10;
// Read the file as an Image
img = ImageIO.read(new File("image.jpg"));
// Get the raster data (array of pixels)
Raster src = img.getData();
// Create an identically-sized output raster
WritableRaster dest = src.createCompatibleWritableRaster();
// Loop through every PIX_SIZE pixels,in both x and y directions
for(int y = 0; y < src.getHeight(); y += PIX_SIZE) {
for(int x = 0; x < src.getWidth(); x += PIX_SIZE) {
// copy the pixel
double[] pixel = new double[3];
pixel = src.getPixel(x,y,pixel);
// "Paste" the pixel onto the surrounding PIX_SIZE by PIX_SIZE neighbors
// Also make sure that our loop never goes outside the bounds of the image
for(int yd = y; (yd < y + PIX_SIZE) && (yd < dest.getHeight()); yd++) {
for(int xd = x; (xd < x + PIX_SIZE) && (xd < dest.getWidth()); xd++) {
dest.setPixel(xd,yd,pixel);
}
}
}
}
// Save the raster back to the Image
img.setData(dest);
// Write the new file
ImageIO.write(img,"jpg",new File("image-pixelated.jpg"));
编辑：我想我应该提一下 – 据我所知,double []像素只是RGB颜色值.例如,当我转储一个像素时,它看起来像{204.0,197.0,189.0},浅棕褐色.