确保该图象文件的类型有效(. j pg、。gif、. bmp等等)——否则将出现一个错误，提示文件类型无效。

Make sure this is a valid image type (.jpg,.gif,.bmp, and so on) — otherwise you will get an error stating that an invalid content type was provided.

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以利普斯指数为特征参数对图象边缘类型进行了分析。

And regarding Lipshitz exponents as feature parameter, it analyses image edge types.

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在指针式仪表自动判读系统中，首先需要对要判读的表盘图象与模板之间进行匹配，以确定所要判读的仪表类型与量程。

In automatic reading system of index-instrument, image of dial plate needed be read must match template in order to decide type and range of instrument needed be read.

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