The protective effect and structure stability of photogrammetric camera in high-low temperature environment determines its imaging quality and reflects its measuring accuracy. The simple protection device for the camera is designed from the flexible and light use. The stability of internal parameters of a camera with or without guard and the effects of temperature change on the calibrated camera in highlow temperature are compared using the self-calibration bundle adjustment of a camera with 10-parameter model. The experimental results show that the internal parameters of the camera with a protective device have little change. It is proved that the protective device can effectively protect the whole camera body and greatly avoid the influence of the temperature change on the overall performance of the camera. It fully reflects the structural stability and reliability of the camera for precision photogrammetry with a simple protective device in high-low temperature environment.
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