Abstract: The present disclosure relates to green screen matting method, apparatus and electronic device, in particular to the technical field of image processing. The method comprises: acquiring a first image; inputting the first image into a target parameter prediction model, and acquiring a target parameter map based on the target parameter prediction model, wherein the target parameter map comprises transparency adjustment parameters for at least part of pixels in the first image; determining a target opacity map for the foreground image in the first image, based on the transparency adjustment parameters for the at least part of pixels and center color distances of the at least part of pixels; calculating the foreground image based on the target opacity map and a color value of the first image.

Abstract: An optical ferrule connector is provided. The optical ferrule connector includes a body including a beveled surface, a plurality of optical fibers embedded in the body, each of the plurality of optical fibers extending along a transmission direction and terminating in a fiber tip that is oriented coplanar to the beveled surface, and a plurality of optical elements, each optical element of the plurality of optical elements located at an associated fiber tip of an associated optical fiber, each optical element operable to manipulate or otherwise focus light into or out of a core of the associated optical fiber.

Abstract: A chimeric antigen receptor for recognizing an Fc fragment and an application thereof. The chimeric antigen receptor comprises an antigen binding domain, a transmembrane domain, and an intracellular costimulatory signal transduction domain. The antigen binding domain comprises an Fc? receptor extracellular domain. According to the present invention, the Fc? receptor extracellular domain is used as the antigen binding domain of the chimeric antigen receptor, so that the prepared CAR-T cell can recognize the Fc fragment of an antibody, and achieve, when used in combination with a tumor therapeutic antibody containing an IgG1 or IgG3 Fc fragment, an ADCC effect similar to that of natural immune cells such as NK cells; even in the case that antigen loss occurs in tumor cells, the CAR-T can also be used in combination with an antibody for recognizing another target to achieve an efficient killing effect on the tumor cells.

Abstract: An optical ferrule connector is provided. The optical ferrule connector includes a body including a beveled surface, a plurality of optical fibers embedded in the body, each of the plurality of optical fibers extending along a transmission direction and terminating in a fiber tip that is oriented coplanar to the beveled surface, and a plurality of optical elements, each optical element of the plurality of optical elements located at an associated fiber tip of an associated optical fiber, each optical element operable to manipulate or otherwise focus light into or out of a core of the associated optical fiber.