通过引入识别窗口多尺度机制进行车辆识别，避免了传统方法中直接对图像的缩放变换。

Multiple detection window approach is introduced to detect vehicles in images, avoiding scaling image directly in traditional way.

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矩形的位置确定图像在屏幕上的位置，原始图像的大小和矩形的大小确定所绘制图像的缩放。

The position of the rectangle locates the image on the screen, and the size of the original image and the size of the rectangle determines the scaling of the drawn image.

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平行四边形的位置确定图像在屏幕上的位置，矩形的大小以及平行四边形的大小和形状确定所绘制图像的缩放和剪切。

The position of the parallelogram locates the image on the screen, and the size of the rectangle and the size and shape of the parallelogram determines the scaling and shearing of the drawn image.

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