请参考以下代码：

long position = page.getLastGraphicsObjectPosition(e_TypeImage);

Image image = new Image(image_file);

ImageObject image_object = ImageObject.create(page.getDocument());

image_object.setImage(image, 0);

float width = image.getWidth();

float height = image.getHeight();

float page_width = page.getWidth();

float page_height = page.getHeight();

//请注意矩阵值。

image_object.setMatrix(new Matrix2D(width, 0, 0, height, (page_width – width) / 2.0f, (page_height – height) /

2.0f));

page.insertGraphicsObject(position, image_object);

page.generateContent();