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Video stepless zooming method

A video zooming and stepless zooming technology, applied in the field of video processing, can solve the problems of secondary development, high hardware requirements, high fees, etc., achieve the effect of reducing the use of logic resources and supporting stepless zooming out and zooming in

Pending Publication Date: 2020-10-13
艾索信息股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a video stepless scaling method, which solves the existing video scaling development problems, such as high hardware requirements, poor real-time performance, high charges, no dynamic configuration, no secondary development, and low development efficiency.

Method used

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  • Video stepless zooming method

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Embodiment approach 1

[0020] This embodiment provides a video stepless scaling method, including the following steps:

[0021] Step 1, use the parameter configuration module to set the input resolution and output resolution of the video scaling module;

[0022] Step 2, use the input interface to process the video outside the video scaling module into the corresponding input resolution through the parameter configuration module in step 1, and then input it into the video scaling module;

[0023] Step 3, adopt bilinear interpolation algorithm to calculate the video pixel value in the video scaling module, configure the video scaling pixel value according to the scaling parameters of the parameter configuration module, and the video scaling module outputs the effective scaled value according to the video pixel value and the video scaling pixel value pixels. (Preferably adopting the coordinates of the pixel, and outputting the scaled effective pixel according to the video pixel value and the video sca...

Embodiment approach 2

[0030] On the basis of the solution disclosed in Embodiment 1, this embodiment discloses the following technical solutions:

[0031] A video stepless scaling method, comprising the following steps:

[0032] (1) parameter configuration module, the video scaling module input resolution is set to 1920x1080, the output resolution of the video scaling module is set to 1280x720;

[0033] (2) Video input interface, video input and output adopts AXI-STREAM interface (AXI-Stream protocol is a standard interface used to connect two components that need to exchange data, it can be used to connect a host that generates data and a host that receives data Data slave. Of course, it can also be used to connect multiple hosts and slaves. This protocol supports multiple data streams using the same shared bus set, allowing the construction of more general interconnections similar to routing, wide-narrow bus, narrow-width bus, etc.) , AXI-STREAM interface includes TREADY signal, TVALID signal, T...

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Abstract

The invention provides a video stepless zooming method. The video stepless zooming method comprises the following steps: step 1, setting an input resolution and an output resolution of a video zoomingmodule by using a parameter configuration module; 2, processing a video outside the video scaling module into a corresponding input resolution by using an input interface through the parameter configuration module in the step 1, and then inputting the video into the video scaling module; and 3, calculating a video pixel value in the video scaling module by adopting a bilinear interpolation algorithm, configuring a video scaling pixel value according to scaling parameters of the parameter configuration module, and outputting scaled effective pixels by the video scaling module according to thevideo pixel value and the video scaling pixel value. The method can be applied to any FPGA platform after optimization and integration, internal data streams are processed in a full pipeline mode, useof logic resources is reduced, a video pixel point is processed in a single clock period, time delay is at a subtle level, and stepless reduction and amplification are supported.

Description

technical field [0001] The invention relates to the field of video processing, in particular to a video stepless scaling method. Background technique [0002] At present, most video scaling systems use dedicated chips for video scaling or are designed by computers. These methods have poor flexibility, high cost, complex hardware, and poor real-time performance, and cannot meet many application scenarios. [0003] In view of this, it is necessary to provide a video stepless scaling method with a short development cycle to solve the problem of high cost of a video scaling dedicated chip. Contents of the invention [0004] The invention provides a video stepless scaling method, which solves the existing video scaling development problems, such as high hardware requirements, poor real-time performance, high charges, no dynamic configuration, no secondary development, and low development efficiency. [0005] The technical scheme that realizes the object of the present inventio...

Claims

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Application Information

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IPC IPC(8): H04N19/34
CPCH04N19/34Y02D10/00
Inventor 李锋林宋晓伟刘雄高国强
Owner 艾索信息股份有限公司
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