Video resolution enhancing method and module based on FPGA (field programmable gate array)

Abstract

The invention relates to a processing method and a hardware module for enhancing the resolution of a digital video file with an ordinary resolution and then outputting the digital video file onto a high-definition display device for real time display. The method comprises the following steps of sequentially storing each frame image of a digital video material with low resolution rate into a cache of a FPGA embedded system; utilizing a standard interpolation algorithm (bilinear interpolation and bicubic interpolation and the like) to reasonably estimate and insert an undefined pixel value between two adjacent pixel point on each frame image, amplifying each frame image, maintaining the smoothness and contrast ratio of the image, improving the resolution rate of each frame image, i.e. the resolution rate of the video; and finally, sequentially and continuously outputting each processed frame image to the display device. The method and the module can be widely applied to the fields such as family life, medical imaging, security monitoring, intelligent car control and outdoor video advertisement and has the characteristics of high output resolution rate, strong real-time property, small size, simplicity and convenience in operation, low cost, high reliability and the like.

Description

technical field [0001] The invention relates to the field of video processing, in particular to a processing method and a hardware module capable of enhancing the resolution of digital video files with common resolutions and outputting them to high-definition display devices for real-time display. Background technique [0002] Commonly used high-definition video resolutions mainly include 720P (1280×720) and 1080p (1920×1080) formats. To watch real high-definition video, in addition to high-definition display devices, you also need a matching high-definition video signal source. The huge amount of data of high-definition signals is a great challenge to the current storage system. In contrast, non-high-definition video has the advantages of abundant resources, small amount of data and easy storage. In the past, a large number of low-resolution DVD movies were produced, and currently low-resolution cameras are still used in fields such as medical imaging, security monitoring...

AI Technical Summary

Problems solved by technology

In principle, the present invention uses a standard interpolation algorithm to amplify each frame of image in the original video stream, utilizes the high-speed data transmission and processing performance of FPGA, especially the powerful parallel computing capability, and reads, processes and outputs digital video files The process is closely combined to obtain a hard real-time video resolution enhancement module, which makes the low-resolution digital video material and the high-resolution display device match well, solves the disadvantages of blurred display under different resolutions, and the video ultra- The time overhead of resolution reconstruction technology is too large

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