Abstract: A dielectric grating apparatus comprises a substrate; a grating layer, disposed above the substrate; a first interference layer, disposed above the substrate; and a second interference layer, adjacent to the first interference layer, wherein a refractive index of a material of the second interference layer is greater than a refractive index of a material of the first interference layer.

Abstract: A calibration system configured to calibrate a handheld controller is disclosed. The calibration system includes a tracking camera, a displayer and a processing unit. The tracking camera is configured to capture streaming images involving the handheld controller. The displayer is configured to display a calibration test instruction. The processing unit is configured to receive first movement data generated by the handheld controller while the handheld controller moving; receive the streaming images captured by the tracking camera generated while the handheld controller moving; calculate second movement data according to the streaming images; calculate calibration parameters by comparing the first movement data and the second movement data; and, transmit the calibration parameters to the handheld controller. The calibration parameters are utilized by the handheld controller in generating a third movement data.

Abstract: A calibration system configured to calibrate a handheld controller is disclosed. The calibration system includes a tracking camera, a displayer and a processing unit. The tracking camera is configured to capture streaming images involving the handheld controller. The displayer is configured to display a calibration test instruction. The processing unit is configured to receive first movement data generated by the handheld controller while the handheld controller moving; receive the streaming images captured by the tracking camera generated while the handheld controller moving; calculate second movement data according to the streaming images; calculate calibration parameters by comparing the first movement data and the second movement data; and, transmit the calibration parameters to the handheld controller. The calibration parameters are utilized by the handheld controller in generating a third movement data.

Abstract: A cross-sensor object-attribute analysis method for detecting at least one object in a space by using cooperation of a plurality of image sensing devices, the method including: the image sensing devices sending raw data or attribute vector data of sensed multiple images to a main information processing device, where the raw data and attribute vector data all correspond to a time record; and the main information processing device generating one or more of the attribute vectors according to the raw data of each of the images and using each of the one or more of the attribute vectors to correspond to one of the at least one object, or the main information processing device directly using the attribute vector data to correspond to the at least one object.

Abstract: A cross-sensor object-space correspondence analysis method for detecting at least one object in a space by using cooperation of a plurality of image sensing devices, the method including: the image sensing devices sending raw data or grid code data of multiple frames of sensed images to a main information processing device to determine a corresponding projection point or a moving track of each of the at least one object on a reference plane corresponding to the space, where each of the image sensing devices has an image plane, and the raw data and each of the grid code data all correspond to a time record.

Abstract: A cross-sensor object-space correspondence analysis method for detecting at least one object in a space by using cooperation of a plurality of image sensing devices, the method including: the image sensing devices sending raw data or grid code data of multiple frames of sensed images to a main information processing device to determine a corresponding projection point or a moving track of each of the at least one object on a reference plane corresponding to the space, where each of the image sensing devices has an image plane, and the raw data and each of the grid code data all correspond to a time record.

Abstract: A cross-sensor object-attribute analysis method for detecting at least one object in a space by using cooperation of a plurality of image sensing devices, the method including: the image sensing devices sending raw data or attribute vector data of sensed multiple images to a main information processing device, where the raw data and attribute vector data all correspond to a time record; and the main information processing device generating one or more of the attribute vectors according to the raw data of each of the images and using each of the one or more of the attribute vectors to correspond to one of the at least one object, or the main information processing device directly using the attribute vector data to correspond to the at least one object.

Abstract: A space-based cross-sensor object positioning and identification method for detecting at least one object in a space, including: periodically performing an object bounding box defining process on raw data of an image sensed by each of a plurality of image sensing devices to generate at least one bounding box for at least one aforementioned object, and performing a first inference process and a second inference process on each aforementioned bounding box to generate a grid code and an attribute vector respectively; and performing a third inference process on plural combined data sets of the grid code and the attribute vector deduced from the images sensed by the image sensing devices to map at least one aforementioned combined data set attributed to a same identity to a local area on a reference plane of the space.

Abstract: A hydrogen carbon cleaning method for a vehicle is provided, which includes the following steps. First, a reformer is provided. Then, high purity hydrogen is provided by the reformer. Next, a hydrogen carbon cleaning process is performed on a vehicle with the high purity hydrogen.