公开(公告)号：US20230028882A1

公开(公告)日：2023-01-26

申请号：US17813230

申请日：2022-07-18

Applicant: Grass Valley Canada

Inventor： Klaas Jan DAMSTRA ,  Marcel Koutstaal

IPC: H04N5/275 ,  H04N7/01

Abstract: A system is provided for capturing a key signal within video frames that includes a camera that captures a sequence of media content of a live scene that includes an electronic display having a higher frame rate than an output frame rate of the camera, and a key signal processor that convert all frames in the sequence of media content to the output frame rate of the camera, analyzes a sequence of frames to determine the key signal based on the electronic display outputting a sequence of frames including media content and at least one key frame included in the sequence, and combine remaining frames of the sequence of frames to create a live output signal. Moreover, the key signal processor determines, for each pixel in the frames, whether the pixel has a set chromaticity, and generates a key mask for each pixel in each frame.

公开(公告)号：US11849244B2

公开(公告)日：2023-12-19

申请号：US17813230

申请日：2022-07-18

Applicant: Grass Valley Canada

Inventor： Klaas Jan Damstra ,  Marcel Koutstaal

IPC: H04N5/275 ,  H04N7/01

CPC classification number: H04N5/275 ,  H04N7/0127

Abstract: A system is provided for capturing a key signal within video frames that includes a camera that captures a sequence of media content of a live scene that includes an electronic display having a higher frame rate than an output frame rate of the camera, and a key signal processor that convert all frames in the sequence of media content to the output frame rate of the camera, analyzes a sequence of frames to determine the key signal based on the electronic display outputting a sequence of frames including media content and at least one key frame included in the sequence, and combine remaining frames of the sequence of frames to create a live output signal. Moreover, the key signal processor determines, for each pixel in the frames, whether the pixel has a set chromaticity, and generates a key mask for each pixel in each frame.