图像的高度和宽度的最大值被设置为 150 像素，但是保持高宽比例不变，因此图像没有变形。

The height and width are maxed out at 150 pixels, but the ratio of the height-to-width is preserved so the images are not distorted.

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我们提供适当的最小宽度和最大宽度，以限制设计中使用的图像的大小。

We provide a sensible readable minimum width and a sensible maximum width to provide a limit on the size of images used in the design.

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文中提出了灰度图像下的行分割方法和基于最大宽度回溯算法的单字分割算法，从而实现了字符的精确定位。

We provide the algorithm of line segmentation under gray level image and character segmentation based on the biggest width backtracking algorithm to get the accurate position of characters.

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