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Complex region detection for display stream compression

A complex and regional technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as inability to distinguish compression quality levels

Active Publication Date: 2019-11-29
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, display-linked video compression techniques (such as DSC) should provide visually lossless picture quality (i.e., pictures with a level of quality such that the user cannot tell the compression is in motion)

Method used

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  • Complex region detection for display stream compression
  • Complex region detection for display stream compression
  • Complex region detection for display stream compression

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Embodiment Construction

[0018] In general, this disclosure relates to techniques for improving video compression techniques, such as Display Stream Compression (DSC). More specifically, the present invention relates to systems and methods for detecting transitions from flat or smooth regions to complex regions of an image to be decoded. This document describes techniques for complex region detection of video data in the context of video compression techniques such as DSC. Aspects of this disclosure relate to ensuring that underflow or overflow of a rate buffer during coding is avoided.

[0019] Although certain embodiments are described herein in the context of the DSC standard, those of ordinary skill in the art will understand that the systems and methods disclosed herein may be applicable to any suitable video coding standard. For example, embodiments disclosed herein may be applicable to one or more of the following standards: International Telecommunication Union (ITU) Telecommunication Standar...

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Abstract

The invention discloses a method and equipment for detecting complex regions of an image. In one example, the method may involve computing complexity values ​​for the current block, the next block, and the previous block. The method may involve: (i) detecting that the previous complexity value is less than a first threshold and the next complexity value is greater than a second threshold; and (ii) determining a transition to the current block and to the None of the transitions from the preceding block are flat to complex region transitions. The method may involve detecting a flat to complex region transition upon transitioning to the next block in response to (i) and (ii).

Description

technical field [0001] This disclosure relates to the field of video coding and compression, and in particular, to video compression for transmission over a display link, such as Display Stream Compression (DSC). Background technique [0002] Digital video capabilities can be incorporated into a wide range of displays, including digital televisions, personal digital assistants (PDAs), laptop computers, desktop monitors, digital cameras, digital recording devices, digital media players, video game devices, video Game consoles, cellular or satellite radiotelephones, video teleconferencing devices and the like. Display Link is used to connect a display to a suitable source device. The bandwidth requirement of a display link is directly proportional to the resolution of the display, and therefore, a high resolution display requires a high bandwidth display link. Some display links do not have the bandwidth to support high-resolution displays. Video compression can be used to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/124H04N19/14H04N19/174H04N19/176H04N19/186H04N19/61
CPCH04N19/124H04N19/14H04N19/174H04N19/176H04N19/186H04N19/61
Inventor 纳坦·海姆·雅各布森维贾伊拉加哈万·提鲁马莱瑞珍·雷克斯曼·乔许
Owner QUALCOMM INC