Abstract: The present invention relates to a method for producing a polyimide powder, particularly to a method for producing a polyimide powder, which includes a) preparing a dispersion by dispersing a dianhydride and a diamine in distilled water; and b) introducing the dispersion of step a) into a reactor and conducting the reaction at a stirring speed of 300 rpm or more under temperature and pressure conditions. In the present invention, it is possible to improve physical properties and control the particle size and dispersibility without additional processes by using water-based polymerization and controlling the stirring speed in the production process.

Abstract: This disclosure provides systems, methods, and devices for image signal processing. In a first aspect, a method of image processing includes controlling an image sensor to capture image data for determining a standard dynamic range (SDR) representation of a scene, the image data comprising a first series of image frames captured with a first exposure level and a second series of image frames captured at a second exposure level. The SDR representation of the scene may be generated by determining a first output image frame based on at least a first image frame of the first series of image frames. Determining of an exposure level for the image sensor during the SDR image capture may be based on a second image frame of the second series of image frames captured by the image sensor in a multi-frame sensor configuration. Other aspects and features are also claimed and described.

Abstract: Methods, devices, and systems for determining image capture settings based on an audio input are disclosed. In some aspects, a device includes a memory, a camera including a lens and a sensor, and a processor coupled to the camera and the memory. The processor may be configured to receive an audio input, determine contextual information based on the audio input, determine one or more image capture settings based on the contextual information, and output the one or more image capture settings.

Abstract: Systems and techniques are described herein for capturing images. For instance, a process can include obtaining a first image associated with a first exposure setting and obtaining a second image associated with a second exposure setting that is different from the first exposure setting. The process can include obtaining motion information associated with at least one of the first image and the second image and determining, based on the motion information, that motion associated with a first pixel of the first image exceeds a threshold. The process can include generating, based on the motion information, a fused image including a first set of pixels from the first image and a second set of pixels from the second image. The first set of pixels from the first image includes the first pixel based on the determination that the motion associated with the first pixel exceeds the threshold.

Abstract: A device for image capture includes a memory configured to store a preview image, and one or more processors coupled to the memory and configured to receive a user selection to focus at a region of the preview image stored in the memory, determine whether there is image content at different depths in the region, based on the determination that there is image content at different depths in the region, output an alternative version of the image content in the region, receive a subsequent user selection within the alternative version, and control a focus level for a camera based on the subsequent user selection.

Abstract: A device for image capture includes a memory configured to store a preview image, and one or more processors coupled to the memory and configured to receive a user selection to focus at a region of the preview image stored in the memory, determine whether there is image content at different depths in the region, based on the determination that there is image content at different depths in the region, output an alternative version of the image content in the region, receive a subsequent user selection within the alternative version, and control a focus level for a camera based on the subsequent user selection.

Abstract: A printing apparatus and an ink refill method thereof are provided. The printing apparatus may comprise a printing unit performing printing, and an ink filling unit filling ink in the printing unit in an upward manner, wherein the printing unit includes a printing ink receptor accommodating ink, a spray head spraying the ink, and a pressure controller controlling a pressure of a fluid for operation of the ink, and the ink filling unit includes a supply ink receptor filled with ink for supply to the printing unit, and an ink supply unit mounted on the spray head to supply the ink supplied from the supply ink receptor to the spray head.

Abstract: Methods, systems, and devices for asymmetric exposure time adjustments for multi-frame (MF) high dynamic range (HDR) imaging in low light conditions are described. In some implementations, a device may receive a set of frames including short exposure frames associated with a first exposure time and long exposure frames associated with a second exposure time and may adjust the second exposure time associated with the long exposure frames to obtain a third exposure time for the long exposure frames based on detecting a low light condition associated with the set of frames. The device may adjust the second exposure time associated with the long exposure frames to obtain the third exposure time for the long exposure frames based on adding, at an image sensor of the device, an additional set of blanking lines to a set of visible lines associated with the short exposure frames.

Abstract: A method for cleaning and sterilizing an excreta handling device includes: positioning one end and the other end of the suction pipe on the same line; driving the pump to supply the cleaning water to a preset water level in the inner space through the first nozzle part; and maintaining, for a predetermined time, a state in which the cleaning water has been supplied to the preset water level, and then driving the suction part to suck the cleaning water contained in the inner space.

Abstract: Methods, systems, and devices for operating a camera-enabled device are described. The camera-enabled device may emit, via a first light emitting source, an infrared light in a physical environment and determine time-of-flight information associated with a target object in the physical environment based on the emitted infrared light. The camera-enabled device may estimate one or more exposure settings based on the time-of-flight information, and emit, via a second light emitting source, a visible light in the physical environment based on the estimated one or more exposure settings. As a result, the camera-enabled device may capture an image of the physical environment based on the emitted visible light and the estimated one or more exposure settings.

Abstract: Methods, systems, and devices for image processing at a device are described. The present disclosure may relate to capturing a first frame of image samples and a second frame of image samples of an image sensor after capturing the first frame of image samples, determining that a white balance confidence level of the second frame does not satisfy a confidence threshold, retrieving the first frame of image samples based on determining that the white balance confidence level of the second frame does not satisfy the confidence threshold, combining at least a portion of the image samples of the first frame with the image samples of the second frame, and determining a white balance setting for the second frame based on combining at least the portion of the image samples of the first frame with the image samples of the second frame.

Abstract: Methods, systems, and devices for operating a camera-enabled device are described. The camera-enabled device may emit, via a first light emitting source, an infrared light in a physical environment and determine time-of-flight information associated with a target object in the physical environment based on the emitted infrared light. The camera-enabled device may estimate one or more exposure settings based on the time-of-flight information, and emit, via a second light emitting source, a visible light in the physical environment based on the estimated one or more exposure settings. As a result, the camera-enabled device may capture an image of the physical environment based on the emitted visible light and the estimated one or more exposure settings.

Abstract: Methods, devices, and systems for determining image capture settings based on an audio input are disclosed. In some aspects, a device includes a memory, a camera including a lens and a sensor, and a processor coupled to the camera and the memory. The processor may be configured to receive an audio input, determine contextual information based on the audio input, determine one or more image capture settings based on the contextual information, and output the one or more image capture settings.

Abstract: Aspects of the present disclosure relate to systems and methods for performing automatic white balance (AWB). An example device may include a memory and a processor coupled to the memory. The processor may be configured to receive a first image of a scene, measure a first illuminant of the first received image, compare the first illuminant and a first illuminant value, determine the scene is changing between the first received image and a previous image based on the comparison, adjust a first AWB convergence rate to a second AWB convergence rate in response to determining the scene is changing, and converge from a first balancing factor to a second balancing factor for one or more white balance operations based on the second AWB convergence rate.

Abstract: A method for cleaning and sterilizing an excreta handling device includes: positioning one end and the other end of the suction pipe on the same line; driving the pump to supply the cleaning water to a preset water level in the inner space through the first nozzle part; and maintaining, for a predetermined time, a state in which the cleaning water has been supplied to the preset water level, and then driving the suction part to suck the cleaning water contained in the inner space.

Abstract: Methods, systems, and apparatuses are provide to perform automatic white balancing. For example, the methods receive, from a plurality of sensing elements in a sensor array, first image data corresponding to an image of a target scene that includes a human face. The methods also detect a region of the image that includes the human face, identify a portion of the first image data that corresponds to the detected region, and compute first gain values based on the identified portion of the first image data and reference image data that characterizes the human face. Further, the methods perform an automatic white balancing operation on the first image data based on the first gain values.

Abstract: A device may obtain a pixel array representing an image and identify one or more representative metrics for the pixel array. The device may retrieve a first version of a mesh defining a color space, wherein the mesh includes a plurality of vertices and each vertex is associated with a respective set of color balance parameters. The device may identify a point in the color space corresponding to the pixel array based on the one or more representative metrics for the pixel array. The device may receive a tuning input comprising a set of color balance parameters for the point and generate a second version of the mesh by adding the point and the set of color balance parameters to the first version of the mesh. The device may output at least one color-corrected image based at least in part on the second version of the mesh.

Abstract: Aspects of the present disclosure relate to systems and methods for performing automatic white balance (AWB). An example device may include a memory and a processor coupled to the memory. The processor may be configured to receive a first image of a scene, measure a first illuminant of the first received image, compare the first illuminant and a first illuminant value, determine the scene is changing between the first received image and a previous image based on the comparison, adjust a first AWB convergence rate to a second AWB convergence rate in response to determining the scene is changing, and converge from a first balancing factor to a second balancing factor for one or more white balance operations based on the second AWB convergence rate.

Abstract: Methods, systems, and devices for color enhancement are described. A device may receive a raw image from a sensor (e.g., a camera of the device). The device may detect multiple regions of pixels corresponding to different image features in the raw image. For example, each region of pixels may correspond to one or more facial features. The device may compute one or more color ratios for each region of pixels. The device may then determine a respective color correction matrix for each region of pixels based at least in part on the one or more color ratios associated with that region of pixels. The device may generate a color-corrected image based on applying the respective color correction matrix to each region of pixels and may output the color-corrected image (e.g., to a display of the device, to a system memory, etc.).

Abstract: A method and apparatus for determining an auto white balance (AWB) gain based on determined depth information. The method may include receiving an image captured by an image sensor, determining depth information associated with the captured image, assigning weights to a plurality of illuminants based on the determined depth information, determining an auto white balance gain based on the assigned weights and statistics of the captured image, and applying the auto white balance gain to the captured image.