Abstract: Systems and techniques are described for depth sensing. For example, a method can include obtaining a first depth image of a scene. The first depth image of the scene is associated with a first illumination configuration including illuminating the scene with a first type of illumination. The method can include obtaining a second depth image of the scene, wherein the second depth image is associated with a second illumination configuration, different from the first illumination configuration. The second illumination configuration includes illuminating the scene with a second type of illumination. The method can include determining, based on the second depth image, multipath interference (MPI) associated with the first depth image. The method can further include generating based on determining the MPI associated with the first depth image an adjusted depth image including one or more pixels from the first depth image and one or more adjusted pixels.

Abstract: Systems and techniques are described for large field of view imaging. A device's first image sensor captures a first image based on first light from a scene redirected by a light redirection element (e.g., a first prism and/or first reflective surface), and the device's second image sensor captures a second image based on second light from the scene redirected by the light redirection element (e.g., a second prism and/or second reflective surface). The device can modify the first image and/or second image using perspective distortion correction and/or to align one or more properties of two respective depictions of a shared portion of a scene in the two images. The one or more properties can include brightness, contrast, positioning, sharpness, tint, hue, and/or saturation. The device can generate a combined image with a large field of view and smooth transitions by combining the first image and the second image.

Abstract: Systems and techniques are described for large field of view digital imaging. A device's first image sensor captures a first image based on first light redirected from a first path onto a redirected first path by a first light redirection element, and the device's second image sensor captures a second image based on second light redirected from a second path onto a redirected second path by a second light redirection element. A virtual extension of the first path beyond the first light redirection element can intersect with a virtual extension of the second path intersect beyond the second light redirection element. The device can modify the first image and second image using perspective distortion correction, and can generate a combined image by combining the first image and the second image. The combined image can have a larger field of view than the first image and/or the second image.

Abstract: Systems and techniques are described for large field of view digital imaging. A device's first image sensor captures a first image based on first light redirected from a first path onto a redirected first path by a first light redirection element, and the device's second image sensor captures a second image based on second light redirected from a second path onto a redirected second path by a second light redirection element. A virtual extension of the first path beyond the first light redirection element can intersect with a virtual extension of the second path intersect beyond the second light redirection element. The device can modify the first image and second image using perspective distortion correction, and can generate a combined image by combining the first image and the second image. The combined image can have a larger field of view than the first image and/or the second image.

Abstract: Techniques are disclosed for generating a high resolution image from a plurality of images captured from a plurality of sensors. The pixels in one sensor have at least one of different size, shape, or orientation than pixels in another sensor. The difference in size, shape, or orientation of the pixels and the interconnection of pixels on respective sensors provides a high level of certainty that there will be sufficient difference in the captured images, with limited loss in image content, to generate a relatively high resolution image from the images captured by the respective sensors.

Abstract: Techniques are disclosed for generating a high resolution image from a plurality of images captured from a plurality of sensors. The pixels in one sensor have at least one of different size, shape, or orientation than pixels in another sensor. The difference in size, shape, or orientation of the pixels and the interconnection of pixels on respective sensors provides a high level of certainty that there will be sufficient difference in the captured images, with limited loss in image content, to generate a relatively high resolution image from the images captured by the respective sensors.

Abstract: Systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying high bit-depth images using spatial vector screening and/or temporal dithering on display devices including display elements that have multiple primary colors. The systems, methods and apparatus described herein are configured to assign one of the primary colors to a display element of the display device that corresponds to the image pixel based on a rank order and a partition index of an associated screen element of a stochastic screen associated with the display device or a portion thereof.

Abstract: Systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images with consistent color performance on display devices including display elements that have multiple primary colors under different illumination conditions are described. The systems, methods and apparatus described herein can be configured to select between different sets of primary colors for different illumination conditions.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying high bit-depth images using spatial vector screening and/or temporal dithering on display devices including display elements that have multiple primary colors. The systems, methods and apparatus described herein are configured to assign one of the primary colors to a display element of the display device that corresponds to the image pixel based on a rank order and a partition index of an associated screen element of a stochastic screen associated with the display device or a portion thereof.

Abstract: This disclosure provides display devices including at least one display element having a tinted native white color. The disclosure provides method of achieving the neutral white color by combining the tinted native white color produced by the at least one display element with a primary color that is complementary to the tint of the native white color using spatial and/or temporal dithering.

Abstract: This disclosure provides a display device that can achieve a neutral white color by combining a first tinted native white color produced by a first display element of the display device or a portion thereof with a second tinted native white color produced by a second display element of the display device or a portion of the first display element. The tint of the first tinted native white color and the second tinted native white color can be complementary to each other. The first tinted native white color and the second tinted native white color can be combined using spatial and/or temporal dithering.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, to map color of an input image pixel to a corresponding device element of a display device capable of displaying a plurality of device primary colors associated with the display element. The color mapping method includes dividing the display color gamut associated with the display device into a plurality of segments including a plurality of display colors. The input color gamut is also divided into a plurality of segments corresponding to the plurality of segments of the display color gamut. The color mapping further includes identifying a segment of the input color gamut including the image pixel color; determining a corresponding segment of the display color gamut; and assigning a display color that is a weighted combination of the colors included in the determined segment of the display color gamut.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying images with consistent color performance on display devices including display elements that have multiple primary colors under different illumination conditions. The systems, methods and apparatus described herein can be configured to select between different sets of primary colors for different illumination conditions.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, to map color of an input image pixel to a corresponding device element of a display device capable of displaying a plurality of device primary colors associated with the display element. The color mapping method includes dividing the display color gamut associated with the display device into a plurality of segments including a plurality of display colors. The input color gamut is also divided into a plurality of segments corresponding to the plurality of segments of the display color gamut. The color mapping further includes identifying a segment of the input color gamut including the image pixel color; determining a corresponding segment of the display color gamut; and assigning a display color that is a weighted combination of the colors included in the determined segment of the display color gamut.

Abstract: This disclosure provides systems, methods and apparatus for light-guiding layers including asymmetrical light-turning features. In one aspect, the asymmetrical light-turning features may include a leading edge oriented at an angle which turns light out of the light-guiding layer, and a near-vertical trailing edge which reduces light leakage from the light-guiding layer. In another aspect, the asymmetrical light-turning features of the light-guiding layer may be oriented in the same or similar direction, and may be distributed with decreasing density adjacent a light source to provide more even illumination.

Abstract: Various display device implementations disclosed herein include display drivers with enhanced capabilities. In some implementations a display driver may be capable of updating a display while a central processing unit (CPU) is switched off or operating in a sleep mode. Some such display drivers may include a display driver clock and a display driver memory. The display driver may be capable of receiving image data from the CPU, including image data for display updates, and storing received image data in the display driver memory. The display driver may be capable of updating the display with stored image data at times indicated by the display driver clock. Some display drivers may include a graphics processing unit capable of generating image data for updates of the display. In some such implementations, the graphics processing unit may be capable of dithering image data.

Abstract: Methods and systems for detecting an object borderline. A first image with respect to the object can be captured by an image-capturing unit without a flash light and borderlines of the object can be detected. If the detection is successful, the detected borderlines can be outputted. Otherwise, a second image with respect to the object can be captured by the image-capturing unit by applying a flash light and the borderlines can be detected in the image. A geometric transformation between the two images can then be estimated. Finally, the border lines in the first image can be determined by transforming the borderlines detected in the second image. Such an approach effectively detects the appliance borderlines and avoids artifacts caused by applying flash.

Abstract: The systems and methods described herein may be used to optimize vector error diffusion for displaying color images on a display device. Vector error diffusion passes a residual vector error from one pixel on to its neighboring pixels with varying weights. The direction and weight of error diffusion can be defined by a vector error diffusion filter. Using a vector error diffusion filter with a limited number of taps allows an a priori determination of which pixel vector is dependent on which pixel vector error at what times. Based on such dependency determination, vector error diffusion calculation for multiple pixels can be scheduled to optimize computation time while preserving the dependency. The scheduled vector error diffusion calculation can further be implemented in virtual pipeline with multiple stages to balance computation load and utilize hardware resource efficiently.

Abstract: When restoring a scanned halftone image of a damaged document, parameters of the halftone structure (geometry) are estimated, as is an intended contone gray level for damaged portions of the image. Locations of halftone cell tiles in the scanned image are determined based on the halftone structure, and a halftone profile model is generated using the estimated halftone parameters and contone information. Image segments are aligned using global features for coarse alignment and halftone structure for fine alignment, such as in cases where the scanned halftone image contains unconnected fragments. Missing parts of the damaged document image are filled in using the halftone profile model and estimated contone values.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for displaying high bit-depth images using a hybrid image dithering method that combines aspect of spatial error diffusion and temporal dithering on display devices including display elements that can display multiple primary colors.