Question

我需要将图像的字节转换为原始图像。我的字节数组由WritableRaster.And创建并转换为原始形式，但它生成的图像没有原始颜色。我的尝试在下面

try {
        BufferedImage readImage = ImageIO.read(new File("C:\\Users\\Public\\Pictures\\Sample Pictures\\Desert.jpg"));
        byte imageData[] = get_byte_data(readImage); // Then I need to convert this to original image

        DataBuffer buffer = new DataBufferByte(imageData, imageData.length);
        WritableRaster raster = Raster.createInterleavedRaster(buffer, width, height, 3 * width, 3, new int[]{0, 1, 2}, (Point) null);
        ColorModel cm = new ComponentColorModel(ColorModel.getRGBdefault().getColorSpace(), false, true, Transparency.OPAQUE, DataBuffer.TYPE_BYTE);
        BufferedImage image = new BufferedImage(cm, raster, true, null);
        ImageIO.write(image, "png", new File("image.png"));
    } catch (IOException ex) {
        Logger.getLogger(NewMain.class.getName()).log(Level.SEVERE, null, ex);
    }
}

private static byte[] get_byte_data(BufferedImage image) {
    WritableRaster raster = image.getRaster();
    DataBufferByte buffer = (DataBufferByte) raster.getDataBuffer();
    return buffer.getData();
}

Answer 1

我弄清楚你的代码有什么问题：

更改此行：

WritableRaster raster = Raster.createInterleavedRaster(buffer, width, height, 3 * width, 3, new int[]{0, 1, 2}, (Point) null);

到

WritableRaster raster = Raster.createInterleavedRaster(buffer, width, height, 3 * width, 3, new int[]{2, 1, 0}, (Point) null);

将起作用，因为原始图像数据是BGR格式而不是RGB。

如何在java中将图像的栅格字节数组转换为原始图像？

1 个答案: