Digital imaging device model and the calibration and high precision sub-pixel positioning is the core technology in digital photogrammetry.

数字成像器件模型及标定和高精度亚象素定位技术是数字摄影测量中的核心技术。

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The utility model relates to a measuring standard device which is matched with GNJ-50, 250 and 500 type torque calibration instruments and used for checking various torque spanners.

本实用新型涉及一种与GNJ - 50、250、500型扭矩校准仪配套的，用于检定各种扭力扳手的计量标准装置。

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