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(
@L_502_1@)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.