Abstract: A stereoscopic display device includes a sensing device and a display device. The sensing device is suitable for sensing position information and viewing angle information of a user. The display device is connected to the sensing device and suitable for receiving the position information and the viewing angle information. The display device includes a substrate and a plurality of pixels, wherein each of the plurality of pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel having main light-emitting directions different from each other. The display device correspondingly turns on at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel and turns off at least another of the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the position information and the viewing angle information.

Abstract: A method for manufacturing a curved autostereoscopic display is provided. The method includes providing a curved panel. The curved panel has a panel arc length and a resolution. The method includes obtaining the optimal viewing distance based on the arc length and the resolution of the curved panel. The method includes determining the allowable curvature radius of the curved panel based on the panel arc length, the optimal viewing distance, and the allowable value. The method includes determining the actual curvature radius of the curved panel based on the optimal viewing distance or the allowable curvature radius.

Abstract: Disclosed are a display device and an operating method thereof. The display device includes an eye tracking circuit, a main display, an extended display, and an image processing circuit. By the eye tracking circuit disposed in the main display, the image processing circuit obtains a viewing position of eyes of a user. The image processing circuit divides an original image into a first partial image and a second partial image. The first partial image is adapted to be displayed on the main display, and the second partial image is adapted to be virtually displayed on an extended virtual display. The image processing circuit converts any pixel position on the extended virtual display into a corresponding pixel position on the extended display based on the viewing position, so as to convert the second partial image into a converted second partial image to be displayed on the extended display.

Abstract: A method for estimating stylus position and a stylus are provided. The method includes the following operation. An image is captured towards a display through an image capturing device disposed on a stylus. A distance between the stylus and the display is detected through a distance sensor disposed on the stylus. A display bezel of the display in the image is detected. A spatial position of the stylus relative to the display is determined according to the display bezel in the image and the distance.

Abstract: The present invention provides a residual current detection device comprising a first conductive wire, a second conductive wire, a first magnetic concentrator and a magnetic sensing device wherein the first conductive wire generates a first magnetic field, the second conductive wire is arranged at one side of the first conductive wire for generating a second magnetic field, the first magnetic concentrator is arranged between the first and second conductive wires whereby a highly concentrated magnetic field area is formed between the first and second conductive wires, and the magnetic sensing device is arranged in the highly concentrated magnetic field area for detecting the first and second magnetic fields.

Abstract: A method for adjusting a depth of a stereoscopic image includes the following. A first disparity correction amount is obtained according to a distance between centers of two lenses of a stereoscopic camera and an interpupillary distance (IPD) of a first observer. A second disparity correction amount is obtained according to a difference between image distances of a stereoscopic display and the stereoscopic camera at zero disparity. A third disparity correction amount is obtained according to the IPD of the first observer and an IPD of a second observer. A stereoscopic image of an object photographed by the stereoscopic camera which has been corrected by the first disparity correction amount, the second disparity correction amount, and the third disparity correction amount is transmitted to the stereoscopic display. A device for adjusting a depth of a stereoscopic image is also provided.

Abstract: The disclosure provides an external parameter determination method and an image processing device. The method includes the following. A plurality of images taken by a plurality of cameras for a specific pattern are obtained. A plurality of feature point combinations are found by performing a feature point matching algorithm on the plurality of images. A slope corresponding to each feature point combination is determined. A plurality of candidate combinations are found based on the slope corresponding to each feature point combination. External parameters between the plurality of cameras are determined based on the plurality of candidate combinations.

Abstract: A multi-view display device including a backlight module and a first light valve is provided. The backlight module includes a first light guide plate, a first light source, a second light guide plate, and a second light source. The first light guide plate has a plurality of first diffraction gratings. The first light source is disposed beside a first incident surface of the first light guide plate and configured to emit a first illumination beam. The second light guide plate has a plurality of second diffraction gratings. The second light source is disposed beside a second light incident surface of the second light guide plate and configured to emit a second illumination beam. The first light valve is disposed on the backlight module.

Abstract: The disclosure provides an eye tracking method and an eye tracking device. The method includes obtaining a reference interpupillary distance value; taking images of a user of a 3D display, and finding a first eye pixel coordinate corresponding to a first eye of the user and a second eye pixel coordinate corresponding to a second eye of the user in each image; detecting a first and a second eye spatial coordinates of the first and the second eyes, and determining projection coordinates based on the first eye spatial coordinate, the second eye spatial coordinate, and optical parameters of image capturing elements; determining an optimization condition related to the first and second eye spatial coordinates based on the first and second eye pixel coordinates, the projection coordinates, and the reference interpupillary distance value of each image; and optimizing the first and second eye spatial coordinates based on the optimization condition.

Abstract: The disclosure provides a method for mitigating 3D crosstalk and a 3D display. The method includes: detecting first and second eye positions of a user, and determining a viewing angle of the user and a rotation angle of a head of the user accordingly; estimating a first reference position and a first midpoint position between first and second eyes of the user based on the first and second eye positions of the user; obtaining a second reference position, and estimating a difference between the first and second reference positions; correcting the first midpoint position to a second midpoint position based on the rotation angle of the user and the difference; and determining a first pixel for projecting to the first eye and a second pixel for projecting to the second eye among the pixels of the 3D display based on the second midpoint position.

Abstract: The disclosure provides a feature point position detection method and an electronic device. The method includes: obtaining a plurality of first relative positions of a plurality of feature points on a specific object relative to a first image capturing element; obtaining a plurality of second relative positions of the plurality of feature points on the specific object relative to a second image capturing element; and in response to determining that the first image capturing element is unreliable, estimating a current three-dimensional position of each feature point based on a historical three-dimensional position and the plurality of second relative positions of each feature point.

Abstract: The present invention provides an electric current sensor comprising a substrate and MR sensing circuit. The substrate has a first surface along a first axis and a second axis. The MR sensing circuit is utilized to detect a magnetic filed about a third axis. The MR sensing circuit is formed onto the first surface and has a plurality of MR sensor pairs. Each MR sensor in each MR sensor pair has a plurality of conductive structures, wherein the conductive structures of one MR sensor are symmetrically arranged. Alternatively, the present invention provides an electric current sensing device using a pair of electric sensors symmetrically arranged at two lateral sides of a conductive wire having an electric current flowing therethrough for eliminating the magnetic field along Z axis generated by external environment.

Abstract: The disclosure provides a display driving device and an operation method thereof. The display driving device includes a timing controller circuit and a driving circuit. The timing controller circuit performs oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame. The oblique filter comprises an oblique high-pass filter or a smoothing filter. Original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel. The driving circuit drives a display panel module according to the processed image frame. The display panel module includes a tilt lenticular lens layer having a first tilt angle. A second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle.

Abstract: The disclosure provides a feature point position detection method and an electronic device. The method includes: obtaining a plurality of first relative positions of a plurality of feature points on a specific object relative to a first image capturing element; obtaining a plurality of second relative positions of the plurality of feature points on the specific object relative to a second image capturing element; and in response to determining that the first image capturing element is unreliable, estimating a current three-dimensional position of each feature point based on a historical three-dimensional position and the plurality of second relative positions of each feature point.

Abstract: An augmented reality system and an anchor display method thereof are provided. An environmental image is captured by an image capturing device disposed on a head-mounted device. A reference image block in the environmental image that matches a display image on a display is detected by performing feature matching between the environmental image and the display image. Position information of the reference image block in the environmental image is obtained. Depth information of the display is obtained according to an actual screen size of the display and a block size of the reference image block in the environmental image. At least one virtual object is displayed by the head-mounted device according to the position information and the depth information. The at least one virtual object is displayed as being anchored to at least one screen bezel of the display.

Abstract: The disclosure provides a method for mitigating 3D crosstalk and a 3D display. The method includes: detecting first and second eye positions of a user, and determining a viewing angle of the user and a rotation angle of a head of the user accordingly; estimating a first reference position and a first midpoint position between first and second eyes of the user based on the first and second eye positions of the user; obtaining a second reference position, and estimating a difference between the first and second reference positions; correcting the first midpoint position to a second midpoint position based on the rotation angle of the user and the difference; and determining a first pixel for projecting to the first eye and a second pixel for projecting to the second eye among the pixels of the 3D display based on the second midpoint position.

Abstract: The disclosure provides an eye tracking method and an eye tracking device. The method includes obtaining a reference interpupillary distance value; taking images of a user of a 3D display, and finding a first eye pixel coordinate corresponding to a first eye of the user and a second eye pixel coordinate corresponding to a second eye of the user in each image; detecting a first and a second eye spatial coordinates of the first and the second eyes, and determining projection coordinates based on the first eye spatial coordinate, the second eye spatial coordinate, and optical parameters of image capturing elements; determining an optimization condition related to the first and second eye spatial coordinates based on the first and second eye pixel coordinates, the projection coordinates, and the reference interpupillary distance value of each image; and optimizing the first and second eye spatial coordinates based on the optimization condition.

Abstract: A three-dimensional gesture detection device and a three-dimensional gesture detection method are provided. The three-dimensional gesture detection device includes a node detection unit, a gesture recognition model and a gesture trajectory detection unit. The node detection unit obtains several nodes according to each of the hand frames of a continuous hand image. The gesture recognition model obtains confidence levels of several gesture categories. The gesture trajectory detection unit includes a weight analyzer, a gesture analyzer, a key point classifier and a trajectory analyzer. The weight analyzer obtains weights of the gesture categories through a user interface. The gesture analyzer performs a weighting calculation on the confidence levels of the gesture categories to analyze a gesture on each of the hand frames. The key point classifier classifies several key points from the nodes. The trajectory analyzer obtains an inertial trajectory of the gesture according to the key points.

Abstract: A wearable display device is provided, including a first optical waveguide lens and a first projection assembly. The first optical waveguide lens has a first area and a second area. The first projection assembly disposed on the first optical waveguide lens projects a plurality of lights and includes a first light projector and a second light projector. The first and second light projectors are disposed in different positions on the first optical waveguide lens in the first direction, and the first light projector and the second light projector do not overlap in the second direction, wherein the first direction and the second direction are not parallel. The first light projector projects a first light to the first area, and the second light projector projects a second light to the second area, and the first light does not overlap with the second light in the second direction.