Abstract: An object detection system includes a projector that projects an original transmitted light on a scene containing an object; an adjustable device configured to shape the original transmitted light, thereby generating a shaped transmitted light; and an image capture device configured to capture an image from a reflected light from the scene. The original transmitted light is alternated with the shaped transmitted light, thereby resulting in an integrated image captured by the image capture device.

Abstract: A method for performing region-of-interest (ROI)-based depth detection with aid of a pattern-adjustable projector and associated apparatus are provided.

Abstract: A method for performing region-of-interest (ROI)-based depth detection with aid of a pattern-adjustable projector and associated apparatus are provided.

Abstract: A three-dimensional (3D) sensing system for determining a 3D profile of an object and a method are provided. The 3D sensing system includes a first light source, a liquid crystal lens, a light detector and a control circuit. The first light source is configured to emit polarized light with a polarization setting for projecting a structured light pattern on the object. The liquid crystal lens in a polarization state allows incident light with the polarization setting to pass through and block incident light without the polarization setting from passing through. The light detector is configured to detect light reflected from the object and passing through the liquid crystal lens. When the 3D sensing system is in a 3D mode, the control circuit is configured to turn on the first light source and control the liquid crystal lens to enter the polarization state.

Abstract: A method for performing hybrid depth detection with aid of an adaptive projector and associated apparatus are provided. The method includes: utilizing an image processing circuit to obtain distance information; utilizing the image processing circuit to determine a distance range according to the distance information; utilizing the image processing circuit to perform projection type selection to determine at least one selected projection type corresponding to the distance range among multiple predetermined projection types; utilizing the adaptive projector to perform projection of the at least one selected projection type to capture at least one corresponding image with a camera, and utilizing the image processing circuit to perform depth detection according to corresponding image to generate depth map; and utilizing the image processing circuit to selectively output the depth map as resultant depth map or perform depth data combination to generate combined depth map as resultant depth map.

Abstract: A three-dimensional (3D) sensing system for determining a 3D profile of an object and a method are provided. The 3D sensing system includes a liquid crystal lens, a structure light source and a control circuit. The structure light source is configured to emit a structure light pattern with a plurality of dots on the object through the liquid crystal lens. The control circuit is configured to control the liquid crystal lens to separate the plurality of dots under a separating mode, and the control circuit is configured to control the liquid crystal lens to overlap the plurality of dots under an overlapping mode.

Abstract: A depth processor including a region of interest determination circuit and a depth decoder is provided. The region of interest determination circuit is configured to determine a size of a region of interest of an input image. The depth decoder is coupled to the region of interest determination circuit and configured to generate a depth map of the input image according to a filter size. The filter size is set according to the size of the region of interest of the input image.

Abstract: A depth processor including a region of interest determination circuit and a depth decoder is provided. The region of interest determination circuit is configured to determine a region of interest of an input image. The depth decoder is coupled to the region of interest determination circuit and configured to generate a depth map of the region of interest of the input image.

Abstract: A depth processor including a region of interest determination circuit and a depth decoder is provided. The region of interest determination circuit is configured to determine a region of interest of an input image. The depth decoder is coupled to the region of interest determination circuit and configured to generate a depth map of the region of interest of the input image.

Abstract: A hybrid three-dimensional (3D) sensing system includes a structured-light (SL) projector that generates an emitted light with a predetermined light pattern; a time-of-flight (ToF) sensor that generates a ToF signal according to a reflected light from a surface of an object incident by the emitted light; a ToF depth processing device that generates a ToF depth image according to the ToF signal; a lookup table (LUT) that gives a gray level for each index value of a sum of accumulated charges of the ToF signal; and an SL depth processing device that generates an SL depth image according to the ToF signal; and a depth weighting device that generates a weighted depth image according to the ToF depth image and the SL depth image.

Abstract: A structured-light scanning system includes a structured-light source that generates an emitted polarized light with a predetermined pattern and a predetermined polarization, the emitted polarized light being then projected onto and reflected from a surface of an object, resulting in a reflected polarized light; a polarization modulator that adjusts polarization state of the reflected polarized light, resulting in a modulated polarized light; a polarizer that lets the modulated polarized light pass through while blocking other lights with polarizations different from the predetermined polarization, thereby outputting a filtered polarized light; and an image sensor that detects the filtered polarized light.

Abstract: A structured-light scanning system includes a structured-light source that generates an emitted polarized light with a predetermined pattern and a predetermined polarization, the emitted polarized light being then projected onto and reflected from a surface of an object, resulting in a reflected polarized light; a polarizer that lets the reflected polarized light pass through while blocking other lights with polarizations different from the predetermined polarization, thereby outputting a filtered polarized light; and an image sensor that detects the filtered polarized light.

Abstract: A structured light projector and a method for structured light projection are disclosed. The structured light projector includes a projection module, a processor. The projection module is configured to project an optical pattern onto a region of space, and includes a light source, a diffractive optical element and a liquid crystal lens. The light source is configured to generate a light beam. The diffractive optical element is configured to convert the light beam into the optical pattern. The liquid crystal lens is interposed between the light source and the diffractive optical element, and is configured to collimate the light beam. The processor is configured to generate a control signal depending on an environment temperature of the projection module for controlling the liquid crystal lens.

Abstract: An example method to control a light source in structured light imaging associated with a target includes obtaining two-dimensional image information and depth information of an image including the target and a scene, associating the depth information with pixels of the image, selecting a first set of pixels of the pixels based on a first set of the depth information and a second set of pixels of the pixels based on a second set of the depth information, calculating a first average pixel luminance (APL) of the first set of pixels and a total APL of the first and the second sets of pixels, obtaining a weighted APL based on the first APL and the total APL and controlling the light source based on the weighted APL.

Abstract: An example method to render an image includes obtaining two-dimensional image information of the image including a target and a scene and depth information associated with a first set of pixels and a second set of pixels of the image. The first set of pixels correspond to the target and the second set of pixels correspond to the scene. In response to depth information associated with a pixel of the image being in the predetermined range, the example method includes associating a first depth index with the pixel. Otherwise, the example method associates a second depth index with the pixel. The example method further includes calculating a weighted average picture level of the image based on grayscale values of pixels of the image, the first depth index and/or the second depth index and rendering the image based on the weighted average picture level.

Abstract: A structured-light scanning system includes a plurality of switchable projectors that respectively generate emitted lights with a predetermined pattern, each switchable projector being capable of switchably generating either a two-dimensional (2D) emitted light or a three-dimensional (3D) emitted light; an optical alignment device that aligns the emitted lights to generate an aligned light, which is projected onto and reflected from a surface of an object, resulting in a reflected light; and an image sensor that detects the reflected light.

Abstract: Semiconductor structure is provided. The semiconductor structure includes a substrate including device regions and an isolation region located adjacent to and between the device regions; a fin on the substrate; gate structures across the fin at the device regions; source/drain doped regions in the fin at two sides of each of the gate structures; a first opening in the fin at the isolation region; and an insulation structure located in the first opening. Two opposite sidewalls of the first opening are respectively in contact with the source/drain doped regions at adjacent device regions. A top surface of the insulation structure is flush with or higher than top surfaces of the source/drain doped regions.

Abstract: Semiconductor structure and method for fabricating a semiconductor structure are provided. A substrate including device regions and an isolation region located adjacent to and between the device regions is provided. A fin on the substrate, gate structures across the fin at the device regions, source/drain doped regions in the fin at two sides of each of the gate structures, and a sacrificial gate across the fin at the isolation region are provided. The sacrificial gate and a portion of the fin near a bottom of the sacrificial gate are removed, thus forming a first opening in the fin. An insulation structure in the first opening is formed. Two sides of the sacrificial gate are in contact with the source/drain doped regions at adjacent device regions. A top surface of the insulation structure is flush with or higher than top surfaces of the source/drain doped regions.

Abstract: The local dimming method includes: dividing a digital image into multiple blocks and calculating a backlight parameter of each of the blocks; performing a backlight simulation based on the backlight parameters to calculate source brightness of each pixel; quantifying the backlight parameters into multiple reference backlight parameters according to numerical ranges; performing the backlight simulation based on the reference backlight parameters to calculate reference source brightness of each pixel; for each of the pixels, setting a gain of the pixel to be less than or equal to a first value if the corresponding reference source brightness is equal to the darkest backlight parameter, otherwise determining the gain of the pixel according to a ratio of the source brightness to the reference source brightness; adjusting grey levels of the pixels according to the gains to obtain adjusted grey levels and driving the display panel according to the adjusted grey levels.

Abstract: A structured light projector and a method for structured light projection are disclosed. The structured light projector includes a projection module, a processor. The projection module is configured to project an optical pattern onto a region of space, and includes a light source, a diffractive optical element and a liquid crystal lens. The light source is configured to generate a light beam. The diffractive optical element is configured to convert the light beam into the optical pattern. The liquid crystal lens is interposed between the light source and the diffractive optical element, and is configured to collimate the light beam. The processor is configured to generate a control signal depending on an environment temperature of the projection module for controlling the liquid crystal lens.