SYSTEM AND METHOD FOR CAMERA CALIBRATION

A dermatoscope or endoscope inspection device is described which can be calibrated at high accuracy to be able to focus at a certain depth, e.g. below the top surface of the skin. A calibration pattern is provided or can be located at a reference viewing surface of an inspection device such as a dermatoscope or endoscope. It is important for a dermatoscope to know with the best accuracy availableat what absolute depth below the top of the skin the device is focused. This can be achieved by embodiments of the present invention by providing focusing means and by knowing a relationship between adigital driving level which shifts the focus position of the focusing means and the corresponding absolute change in focus depth. From this it is possible to know how deep the device is focused in absolute terms below the top of the skin. 描述了一种能够以高准确度校准以能够在特定深度处(例如，在皮肤的顶表面下方)聚焦的皮肤镜或内窥镜检查设备。提供了校准图案，或者可将校准图案定位在检查设备(诸如皮肤镜或内窥镜)的参考查看表面处。皮肤镜以可获得的最佳准确度来知晓该设备聚焦在皮肤顶部下方什么绝对深度处是重要的。这可通过本发明的各实施例提供聚焦装置并知晓使聚焦装置的聚焦位置移位的数字驱动电平与聚焦深度的对应绝对变