Abstract: A structured light projection system is provided. The structured light projection system includes a condenser lens group, a light source, a mask, an imaging component, and a holder. The condenser lens group includes a first end and a second end. The light source is disposed on the first end of the condenser lens group. The light source emits a light. The imaging component projects the light passing through the mask onto a target element. The holder is disposed on the second end of the condenser lens group. The holder holds the mask and the imaging component. The light emitted by the light source sequentially passes through the condenser lens group, the mask, and the imaging component.

Abstract: A telehealth movable vehicle is provided. The telehealth movable vehicle includes a movable part, a fixed member, a slidable member, a bracket, a video/audio transceiver module, and a telescopic rod. The fixed member is affixed to the movable part, and has a guide rail. The slidable member is movably connected to the guide rail. The bracket is affixed to the slidable member. The video/audio transceiver module is disposed on the bracket. The telescopic rod is connected to the fixed member and the slidable member. The telescopic rod is configured to drive the slidable member to move along the guide rail relative to the fixed member.

Abstract: An embodiment of the invention provides an electrocardiography (ECG) signal processing device. The ECG signal processing device includes a first part, a second part and a flexible printed circuit board. The first part may comprise a first electrode and a processing circuit. The second part includes a second electrode. The flexible printed circuit board is coupled to the first part and the second part to fold the first part and the second part. When a closed loop is formed between the first electrode and the second electrode, the processing circuit obtains an ECG signal from the user.

Abstract: A method for obtaining a handwriting trajectory is provided. The method includes the following steps: capturing images of handwriting that is written with a writing brush on a piece of paper on a writing platform; obtaining positions where pixels in each of the images are lower than a threshold according to the threshold; and outputting handwriting images according to the positions.

Abstract: A fog discrimination method is disclosed, including a capturing step, a calculation step, and a determining step. The capturing step includes capturing a sub-image of an image. The sub-image includes a light shield body image and a light shield stripe image. The calculation step includes calculating a maximum average grayscale value and a minimum average grayscale value of the sub-image; and calculating a fog function. The fog function is a function of the maximum average grayscale value and the minimum average grayscale value. The determining step includes determining whether the fog function is greater than or less than a threshold; and determining as being fogged when the fog function is less than the threshold.

Abstract: An oral cavity scanning device is provided in the invention. The oral cavity scanning device includes an image capturing unit, an IMU circuit and a processing unit. The image capturing unit obtains a first image and a second image. The IMU circuit obtains IMU information corresponding to the first image and the second image. The processing unit obtains a distance value between the first image and the second image. The processing unit uses a contour algorithm to obtain a first contour and a second contour. The processing unit obtains first sampling points according to the first contour and second sampling points according to the second contour. The processing unit uses a feature algorithm to find relative feature points between the first sampling points and the second sampling points. The processing unit uses a depth information algorithm to obtain the depth information of each feature point.