Abstract: The present disclosure relates to a method and apparatus for representing dynamic neural radiance fields from unsynchronized videos. A method of acquiring a video at an arbitrary viewpoint based on a dynamic neural radiance fields model according to an embodiment of the present disclosure may comprise: inputting one or more videos acquired from one or more views for one scene into the dynamic neural radiance fields model; inputting a time embedding for the one or more videos into the dynamic neural radiance fields model; and rendering the video at the arbitrary viewpoint based on color information and density information output by the dynamic neural radiance fields model. Herein, time synchronization related to the time embedding may be performed by applying an individual time offset learned for each view, for the one or more views.

Abstract: A optical measurement apparatus includes: an optical system which generates a pupil image of a measurement target, using light; a polarization generator which generates a polarized light from the light; a self-interference generator which generates a plurality of beams divided from the pupil image, using the polarized light, and causes the plurality of beams to interfere with each other to generate a self-interference image; and an image analysis unit configured to extract phase data from the self-interference image, and to move the measurement target to a focus position on the basis of the phase data.

Abstract: An embodiment provides an air conditioner for a vehicle, the air conditioner including an air conditioning unit having a heat exchanger disposed therein, and a blower unit configured to supply air to the air conditioning unit, in which the blower unit includes a blower casing having an inner surface, and a blower configured to allow the air to flow toward the inner surface, in which the inner surface includes a first surface, and a second surface disposed on the first surface and inclined, and in which the first and second surfaces divide a direction of the air, which is allowed to flow by the blower, into at least two directions. Therefore, the air conditioner for a vehicle may improve performance and quality of the blower unit.

Abstract: The present disclosure relates to a safe foothold apparatus for a platform, wherein a foothold plate protrudes from and is retracted into the platform by moving along a curved rotational route so that the foothold plate is re-retracted into the platform safely due to the operation structure even when a collision occurs between a train and the foothold plate in a protrusion state. Therefore, the present invention can prevent the foothold plate and the train from being damaged, thereby establishing safer boarding/alighting environment and stably maintaining the operational state of the foothold plate by using a frictional contact module even in an emergency situation. Accordingly, the present invention can improve safety through a simple structure, facilitate the manufacturing and establishment work by simplifying a structure of a manual operation module, reduce the size of a whole apparatus, and far enhance the operational stability.

Abstract: Disclosed is a device and a method for measuring stream water depth in real-time through positioning data filtering to ensure the reliability of the measured water depth data even when the stream water depth measurement data is filtered and applied to a small stream having a small basin area and a steep slope. The device for measuring stream water depth in real-time through positioning data filtering includes: a measuring part for measuring the water depth of a stream to be measured; a positioning data filtering part for filtering the water depth data measured by the measuring means by a local linear regression-based bivariate scatterplot smoothing technique through elastic bandwidth application; and a water depth calculating part for calculating a water depth of the stream to be measured by using the positioning data filtered by the positioning data filtering part, and minimizing the uncertainty of the water depth measurement.

Abstract: Disclosed is a system for automatically measuring a discharge in real time based on a CCTV image. The system includes: a water depth measurement device filtering water depth data measured by a measurement means with a local linear regression-based bivariate scatterplot smoothing technique through flexible bandwidth application to calculate the water depth of a stream; an image acquisition device acquiring a continuous image of a flow speed measurement side of the stream; an image analysis PC using an image of the image acquisition device to measure the surface flow speed in real time and receiving a measured water depth from the water depth measurement device to measure the discharge in real time with cross-section data; and a discharge calculation and management server for transmitting and displaying a real-time discharge measurement result based on a web.

Abstract: Disclosed is a river flow velocity measurement device using optical flow image processing, including: an image photographing unit configured to acquire consecutive images of a flow velocity measurement site of a river; an image conversion analysis unit configured to dynamically extract frames of the consecutive images in order to normalize image data of the image photographing unit, image-convert the extracted frames, and perform homography calculation; an analysis region extracting unit configured to extract an analysis region of an analysis point; a pixel flow velocity calculating unit configured to calculate a pixel flow velocity using an image in the analysis region of the analysis point extracted by the analysis region extracting unit; and an actual flow velocity calculating unit configured to convert the pixel flow velocity calculated by the pixel flow velocity calculating unit into an actual flow velocity.

Abstract: Disclosed is a device and a method for measuring stream water depth in real-time through positioning data filtering to ensure the reliability of the measured water depth data even when the stream water depth measurement data is filtered and applied to a small stream having a small basin area and a steep slope. The device for measuring stream water depth in real-time through positioning data filtering includes: a measuring part for measuring the water depth of a stream to be measured; a positioning data filtering part for filtering the water depth data measured by the measuring means by a local linear regression-based bivariate scatterplot smoothing technique through elastic bandwidth application; and a water depth calculating part for calculating a water depth of the stream to be measured by using the positioning data filtered by the positioning data filtering part, and minimizing the uncertainty of the water depth measurement.

Abstract: Disclosed is a system for automatically measuring a discharge in real time based on a CCTV image. The system includes: a water depth measurement device filtering water depth data measured by a measurement means with a local linear regression-based bivariate scatterplot smoothing technique through flexible bandwidth application to calculate the water depth of a stream; an image acquisition device acquiring a continuous image of a flow speed measurement side of the stream; an image analysis PC using an image of the image acquisition device to measure the surface flow speed in real time and receiving a measured water depth from the water depth measurement device to measure the discharge in real time with cross-section data; and a discharge calculation and management server for transmitting and displaying a real-time discharge measurement result based on a web.

Abstract: Disclosed is a river flow velocity measurement device using optical flow image processing, including: an image photographing unit configured to acquire consecutive images of a flow velocity measurement site of a river; an image conversion analysis unit configured to dynamically extract frames of the consecutive images in order to normalize image data of the image photographing unit, image-convert the extracted frames, and perform homography calculation; an analysis region extracting unit configured to extract an analysis region of an analysis point; a pixel flow velocity calculating unit configured to calculate a pixel flow velocity using an image in the analysis region of the analysis point extracted by the analysis region extracting unit; and an actual flow velocity calculating unit configured to convert the pixel flow velocity calculated by the pixel flow velocity calculating unit into an actual flow velocity.

Abstract: A training controller, semiconductor device and a system including the same are disclosed, which relates to technology for training a phase of data. The training controller may include a read training circuit configured to control a read training operation based on a read signal and a control signal. The training controller may include a write training circuit configured to control a write training operation based on a write signal and a write training signal. The training controller may include a reset controller configured to generate a reset signal when a mismatch occurs in the read training operation or the write training operation.

Abstract: A training controller, semiconductor device and a system including the same are disclosed, which relates to technology for training a phase of data. The training controller may include a read training circuit configured to control a read training operation based on a read signal and a control signal. The training controller may include a write training circuit configured to control a write training operation based on a write signal and a write training signal. The training controller may include a reset controller configured to generate a reset signal when a mismatch occurs in the read training operation or the write training operation.