Abstract: Provided are a method and an apparatus for creating a live room, an electronic device, and a storage medium. The method for creating a live room includes: receiving a trigger instruction of a preset creation identifier; acquiring, according to the trigger instruction, live information associated with the preset creation identifier; and sending the live information to a server such that the server creates a target live room based on the live information.

Abstract: Provided are a method and an apparatus for creating a live room, an electronic device, and a storage medium. The method for creating a live room includes: receiving a trigger instruction of a preset creation identifier; acquiring, according to the trigger instruction, live information associated with the preset creation identifier; and sending the live information to a server such that the server creates a target live room based on the live information.

Abstract: An apparatus and method for counting moving objects is disclosed that includes: an establishing unit configured to detect moving objects in each frame of image in a surveillance video, establish a moving object track set according to the detected moving objects, and score a track of the moving object according to the number of times of consecutively detecting a moving object in the moving object track in the moving object track set; a filtering unit configured to remove a moving object track in the moving object track set with a score less than or equal to a predefined threshold value; and a counting unit configured to count moving objects according to the moving object tracks in the moving object track set after the removal. With the apparatus and method, completeness of the established moving object track set may be ensured, and accuracy of the counting may be efficiently improved.

Abstract: An apparatus and method for counting moving objects is disclosed that includes: an establishing unit configured to detect moving objects in each frame of image in a surveillance video, establish a moving object track set according to the detected moving objects, and score a track of the moving object according to the number of times of consecutively detecting a moving object in the moving object track in the moving object track set; a filtering unit configured to remove a moving object track in the moving object track set with a score less than or equal to a predefined threshold value; and a counting unit configured to count moving objects according to the moving object tracks in the moving object track set after the removal. With the apparatus and method, completeness of the established moving object track set may be ensured, and accuracy of the counting may be efficiently improved.

Abstract: Method and system for constructing and testing integrity of a combination of first and second spaced apart optical fiber couplers that each receive and hold two fibers. A segment of each fiber in a separation region between the couplers is heated, twisted and elongated by selected amounts to form a fiber complex, located between the first and second couplers. The fibers in the second coupler are subjected to further controlled elongation. A spectrum analyzer receives a common light beam passed through each of the two fibers and fiber couplers and measures successive maximum and minimum values of an interferometric variable IF and pit-to-pit or peak-to-peak spacing of the IF values as fiber segment elongation is varied.

Abstract: System and method for wavelength discrimination using a DWDM (N+1)-stage cascade tree structure with distributed filtering to provide acceptable optical isolation and acceptable flat-top wavelength response. Each channel has a Mach-Zehnder interferometer (MZI) that provides wavelength discrimination. The input channel includes an inverted Fabry-Perot etalon (FPE) filter or an inverted, non-symmetric MZI filter that helps provide a desired flat-top response. Each channel in a second stage has a selected conventional MZI filter, and each channel in a third stage has a selected FPE filter, to help provide the desired optical isolation. The number of output channels may be 32, 64 or more.

Abstract: System and method for wavelength discrimination using a DWDM (N+1)-stage fiber optic cascade tree structure with additional filtering to provide acceptable flat-top passband response, and to provide acceptable optical isolation when combined with a multilayer thin film filter. Each channel in a DWDM cascade tree structure has a conventional Mach-Zehnder interferometer (MZI) that provides wavelength discrimination. Each channel in at least one stage has an additional filter that is either (1) an inverted Fabry-Perot etalon (FPE) or (2) an inverted, non-symmetric MZI. The number of output channels may be 32, 64, 128 or more.

Abstract: Method for producing a stable, multi-port fiber optic coupler that is useful for wavelength division multiplexing (WDM). The system response is substantially independent of signal polarization and is reasonably stable against mechanical stresses and elevated temperatures. Contiguous sections of two or more fiber optic lines are alternatingly heated and elongated and are twisted according to selected process parameters for selected time intervals. The fabrication procedure uses a combination of fiber heating at two or more distinct temperatures, fiber elongation and fiber twisting, applied to two or more contiguous fiber optic lines, to produce a fused fiber optic coupler with controllable wavelength discrimination and controllable signal power coupling into each output branch of the fiber optic coupler. ITU standards for wavelength discrimination and wavelength centering in a fiber optic coupler can be met by adjustment of the process parameters.

Abstract: System and method for wavelength discrimination using a DWDM cascade tree structure with distributed filtering to provide acceptable optical isolation and acceptable flat-top wavelength response. Each channel has a Mach-Zehnder interferometer (MZI), or an MZI combined with a phase shift mechanism (a PSMZI), that provides wavelength discrimination in each channel of the structure. The phase shift mechanism may be a Gires-Tournois resonator, selectively tuned for each channel. The number of output channels may be 32, 64, 128 or more, and the light in each output channel satisfies the BellCore standards for optical isolation, flat-top wavelength response and crosstalk suppression.