A Method of Using Partial Format Data to Realize Rapid Processing of Large Format Video Images

A video image, large format technology, applied in the media field, can solve problems such as high cost and slow preview, and achieve the effect of lowering the industry threshold, strong real-time performance, and reducing hardware configuration requirements

Active Publication Date: 2020-05-05
CHENGDU SOBEY DIGITAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is: a method for quickly processing large-format video images by using partial format data, which solves the problem of high cost and slow preview caused by using multiple GPUs to improve processing efficiency in the process of rendering large-format video images technical issues

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  • A Method of Using Partial Format Data to Realize Rapid Processing of Large Format Video Images
  • A Method of Using Partial Format Data to Realize Rapid Processing of Large Format Video Images
  • A Method of Using Partial Format Data to Realize Rapid Processing of Large Format Video Images

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specific Embodiment 1

[0065] A method for quickly processing large-format video images by using part-format data, comprising the following steps:

[0066] Step 1: The CPU will screen the full-format image data to obtain partial-format image data;

[0067] Step 2: The CPU uploads the partial format image data to the GPU;

[0068] Step 3: GPU reconstructs the partial format data into full format image data:

[0069] Step 4: The GPU outputs the reconstructed full-frame image data.

[0070] Half-format image data, one-third image data, etc. can be used for part-format image data. The smaller the data volume, the higher the image quality attenuation, but the higher the transmission rate and the faster preview speed.

specific Embodiment 2

[0072] In this embodiment, the full-frame image data is filtered into half-frame image data as an example for illustration:

[0073] S100: The CPU fetches the full-frame image data from the internal memory. The 4K full-frame image data has a total of 2160 lines. Use the decoder to decode the full-frame image data. The decoder can use the DNxHD codec;

[0074] S101: The CPU calculates the storage amount u occupied by each line of data in the decoded full-frame image data, and the data amount u is 2KB;

[0075] S102: Set the filter step size of the line number to S=2, the amount of data spanned by the filter step size 2 is 4KB; set the filter function adr i =2i+adr 0 , where i represents the line number of the full-frame image data, adr i Indicates the storage address of the i-th row of data, adr 0 Indicates the storage address of row 0 data;

[0076] S103: Use the filter function to filter out the partial format image data that needs to be uploaded to the GPU, and calculate...

specific Embodiment 3

[0085] In this embodiment, the full-format image data is filtered into one-third of the format image data as an example for illustration:

[0086] S100: The CPU fetches the full-frame image data from the internal memory. The 4K full-frame image data has a total of 2160 lines. Use the decoder to decode the full-frame image data. The decoder can use the DNxHD codec;

[0087] S101: The CPU calculates the storage amount u occupied by each line of data in the decoded full-frame image data, and the data amount u is 2KB;

[0088] S102: Set the filter step size of the line number to S=3, the amount of data spanned by the filter step size 3 is 6KB; set the filter function adr i =2i+adr 0 , where i represents the line number of the full-frame image data, adr i Indicates the storage address of the i-th row of data, adr 0 Indicates the storage address of row 0 data;

[0089] S103: Use the filter function to filter out the partial format image data that needs to be uploaded to the GPU,...

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Abstract

The invention discloses a method for quickly processing a large-format video image through partial format data, a CPU is used for screening full-format image data to obtain partial-format image data;the CPU is used for uploading the partial format image data to a GPU; the GPU is used for reconstructing the partial format data into the full-format image data; and the GPU outputs the reconstructedfull-format image data. By the adoption of the method, rapid previewing can be realized, and the flexibility is high.

Description

technical field [0001] The invention relates to the field of media technology, in particular to a method for quickly processing large-format video images by using part-format data. Background technique [0002] With the development of the times and the improvement of the economic level, people have higher and higher requirements for the leisure and entertainment industry. People require excellent film and television works not only to have profound ideas, but also to be well-produced, with clear pictures, and to bring people a real body. Immediately on the scene, so as to realize the world without leaving home. The era of ultra-high-definition (referring to the pixel resolution of video images of 4096×2160, hereinafter referred to as 4K) has emerged at the historic moment. 4K video will quickly occupy people's daily life, and has even become the core and focus of video production. Rendering efficiency is the biggest problem facing 4K, and rendering efficiency is often improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/262H04N21/234H04N21/44
CPCH04N5/262H04N21/234H04N21/44
Inventor 罗天王炜吴若寒汪文杰
Owner CHENGDU SOBEY DIGITAL TECH CO LTD
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