Because the reference mark automatic recognition and locating is an important step detecting data from digital image. The veracity of the focus of mark is related to the nicety of data.

由于对数字影像内定向时框标的识别与定位是从数字影像提取数据的关键步骤，框标中心坐标确定的准确度将直接关系到所提取数据信息的精度。

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He began the vigils in 1977, after discovering a reference to the Toaster in a local newspaper's archives and deciding to check its veracity.

WSJ: A Midnight Dreary for Those Who Seek Tell-Tale Signs of Poe's Elusive 'Toaster'