使用g2d对yuyv图像进行RGB转换
时间: 2024-05-03 13:21:29 浏览: 9
在Java中,可以使用G2D对YUYV图像进行RGB转换。以下是一个示例代码:
```
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
public class YUYVtoRGBConverter {
public static BufferedImage convert(byte[] yuyvData, int width, int height) {
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = image.createGraphics();
int framesize = width * height * 2;
int output[] = new int[width * height];
for (int i = 0, j = 0; i < framesize; i += 4, j += 2) {
int y1 = yuyvData[i] & 0xff;
int u = yuyvData[i + 1] & 0xff;
int y2 = yuyvData[i + 2] & 0xff;
int v = yuyvData[i + 3] & 0xff;
y1 = y1 < 16 ? 16 : y1;
y2 = y2 < 16 ? 16 : y2;
u -= 128;
v -= 128;
int r1 = (int) (1.164 * y1 + 1.596 * v);
int g1 = (int) (1.164 * y1 - 0.813 * v - 0.391 * u);
int b1 = (int) (1.164 * y1 + 2.018 * u);
int r2 = (int) (1.164 * y2 + 1.596 * v);
int g2 = (int) (1.164 * y2 - 0.813 * v - 0.391 * u);
int b2 = (int) (1.164 * y2 + 2.018 * u);
r1 = r1 < 0 ? 0 : (r1 > 255 ? 255 : r1);
g1 = g1 < 0 ? 0 : (g1 > 255 ? 255 : g1);
b1 = b1 < 0 ? 0 : (b1 > 255 ? 255 : b1);
r2 = r2 < 0 ? 0 : (r2 > 255 ? 255 : r2);
g2 = g2 < 0 ? 0 : (g2 > 255 ? 255 : g2);
b2 = b2 < 0 ? 0 : (b2 > 255 ? 255 : b2);
output[j] = (r1 << 16) | (g1 << 8) | b1;
output[j + 1] = (r2 << 16) | (g2 << 8) | b2;
}
g2d.drawImage(image, 0, 0, null);
g2d.dispose();
return image;
}
}
```
在这个示例中,我们首先创建一个`BufferedImage`对象,然后使用`Graphics2D`对象创建一个图形上下文。接下来,我们定义一些变量来存储YUYV数据的每个像素的值,然后使用公式将它们转换为RGB值。最后,我们将RGB值设置为`output`数组的值,并将`image`对象绘制到图形上下文中,然后将其释放。最后,我们返回转换后的图像。