Audio and video image intelligent control system based on FPGA technology

Abstract

The invention provides an audio and video image intelligent control system based on an FPGA technology, and is used for solving the technical problems of poor color of digital video pictures outputted by traditional audio and video images and unsmooth switching of multiple paths of video pictures. The system comprises an upper computer, a microcontroller, an FPGA video superposition processor and a video acquisition module. The upper computer is connected with the microcontroller through a serial port, and the microcontroller is respectively connected with the video acquisition module and the FPGA video superposition processor through an I2C bus; the video acquisition module acquires multiple paths of video input signals and outputs digital video signals to the FPGA video superposition processor through quantization coding, and superposed video signals are outputted after the digital video signals are processed by the FPGA video superposition processor. According to the system, the linear space change edge detector is used for edge enhancement, the sharpening space filter is used for reducing the blurring effect generated by bilinear interpolation, and the high-quality scaled image can be generated with a small area and high performance.

Description

technical field [0001] The invention relates to the technical field of audio and video control, in particular to an intelligent control system for audio, video and images based on FPGA technology. Background technique [0002] The ALPHA hybrid overlay algorithm is a technology widely used in the field of graphics and images, which can produce images with a sense of transparency. The principle is to adjust different weight values ​​assigned to the background video stream and the foreground video stream to achieve different degrees of transparency. The mathematical description of the algorithm is: output image = foreground image×Alpha+background image×(1-Alpha); among them, the parameter Alpha satisfies 0≤Alpha≤1, and the overlay parameter Alpha is called transparency, the larger the Alpha, the more opaque the foreground image, and the overlay Highlight the foreground image. The smaller the Alpha, the more transparent the foreground image will be, and the background image wi...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes an intelligent control system for audio and video images based on FPGA technology, which solves the problem of poor color and visual experience of digital video images output by traditional audio and video images, and multi-channel The technical problem that the video screen switching is not smooth

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