Abstract: A light source is used to project a structured light pattern onto a transparent piece under test. A first image sensing unit is used to obtain first image information of the structured light pattern on the transparent piece under test. A second image sensing unit is used to obtain second image information of the structured light pattern on the transparent piece under test. A processing unit includes a memory unit and a computing unit. The memory unit is used to store a correction parameter set, and the computing unit is used to receive the first image information and the second image information and obtain three-dimensional information of a surface of the transparent piece under test through the correction parameter set.

Abstract: A head-mounted electronic device including a head-mounted frame, a lens, a photosensitive element, a projector, an optical element, a processor, and a memory is provided. The lens and the projector are disposed on the head-mounted frame. The photosensitive element is adapted to obtain first image data of a first target and body image data of a second target. The processor is electrically coupled to the photosensitive element and the projector. The memory storing color data, a first program, and a feature enhancement program, wherein the first program generates third image data according to the first image data and the color data for the projector to generate a third image on a reflective surface of the optical element. The feature enhancement program according to the body image data and the third image data for the projector to generate a fourth image on the reflective surface.

Abstract: A shift control method is used with a pen-shaped pointing device and a controlled device. Firstly, shift information, tilt angle information and rotating angle information in response to a configuration change of the pointing device relative to a supporting plane are sensed. Then, a shift estimation operation is performed by the controlled device according to the shift information, the tilt angle information and the rotating angle information, thereby acquiring a position-compensating data. If the pointing device is in contact with the supporting plane, a moving trajectory of the pointing device displayed by the controlled device is adjusted according to the position-compensating data.