Multi-picture video matrix preview method and system and medium

By combining MCU chips with video matrix switching chips and FPGA chips, and employing local mean image scaling algorithm and time-division multiplexing technology, the problems of blurry image quality and high heat dissipation cost in large-scale video matrix preview are solved, realizing real-time preview and optimal configuration of multiple video input sources.

CN120881218APending Publication Date: 2025-10-31SHENZHEN HUIDU TECH
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Patent Information

Application Number
CN202510889340.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-30
Publication Date
2025-10-31

AI Technical Summary

Technical Problem

Existing technologies result in blurred image quality, especially unclear text outlines, when the video signal is scaled down in large-scale video matrix previews. Furthermore, they are costly to dissipate heat, making them unsuitable for 128x128 channel or even larger-scale input/output matrix requirements.

Method used

By combining an MCU chip with a video matrix switching chip and an FPGA chip, and using a local mean image scaling algorithm and time-division multiplexing technology, the video matrix switching chip is controlled to switch video input signals, and the scaled image is cached in a DDR chip. Real-time preview of multiple video input sources is achieved by using image stitching technology.

Benefits of technology

It significantly improves the image quality blurring problem after image scaling, especially maintaining text legibility, while reducing heat dissipation costs and achieving optimal preview configuration for large-scale video matrices.

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Abstract

The invention discloses a multi-picture video matrix previewing method and system and a medium. The method comprises the steps that an MCU chip obtains the screen resolution, the number of windows in a screen previewing window matrix and the number of multiple paths of video input sources; the MCU chip is configured with a multi-path picture resolution parameter and a reduction scale parameter; the MCU chip sends a multi-path picture resolution parameter and a reduction scale parameter to the image reduction module, controls the video matrix switching chip to switch input and output signals, and sequentially inputs pictures of a multi-path video input source to the image reduction module; the image reduction module is used for carrying out scaling processing on the images of the multi-channel video input source input by the video matrix switching chip by adopting a local mean reduction algorithm, and caching the scaled images in a DDR (Double Data Rate) chip; and the video output module is used for splicing the zoomed pictures and then displaying the pictures in a screen preview window. According to the invention, the previewing function of multi-channel video input pictures is realized, and the problem that the picture quality becomes blurred after the image is reduced is solved.
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