SG10201900707UA - Determining native resolutions of video sequences - Google Patents

Determining native resolutions of video sequences

Info

Publication number
SG10201900707UA
SG10201900707UA SG10201900707UA SG10201900707UA SG10201900707UA SG 10201900707U A SG10201900707U A SG 10201900707UA SG 10201900707U A SG10201900707U A SG 10201900707UA SG 10201900707U A SG10201900707U A SG 10201900707UA SG 10201900707U A SG10201900707U A SG 10201900707UA
Authority
SG
Singapore
Prior art keywords
frame
spectrum
log
magnitude
scene
Prior art date
Application number
SG10201900707UA
Inventor
Ioannis Katsavounidis
Original Assignee
Netflix Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Netflix Inc filed Critical Netflix Inc
Publication of SG10201900707UA publication Critical patent/SG10201900707UA/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/56—Extraction of image or video features relating to colour
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/40—Scenes; Scene-specific elements in video content
    • G06V20/49—Segmenting video sequences, i.e. computational techniques such as parsing or cutting the sequence, low-level clustering or determining units such as shots or scenes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234363—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the spatial resolution, e.g. for clients with a lower screen resolution
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/42—Global feature extraction by analysis of the whole pattern, e.g. using frequency domain transformations or autocorrelation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Computing Systems (AREA)
  • Image Analysis (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Processing (AREA)
  • Television Systems (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

DETERMINING NATIVE RESOLUTIONS OF VIDEO SEQUENCES OF THE DISCLOSURE In one embodiment of the present invention, a native resolution analyzer generates a log-magnitude spectrum that elucidates sampling operations that have been performed on a scene. In operation, the native resolution analyzer performs a 5 transform operation of a color component associated with a frame included in the scene to generate a frame spectrum. The native resolution analyzer then normalizes the magnitudes associated with the frame spectrum and logarithmically scales the normalized magnitudes to create a log-magnitude frame spectrum. This two dimensional log-magnitude frame spectrum serves as a frequency signature for the 10 frame. More specifically, patterns in the log-magnitude spectrum reflect re-sampling operations, such as a down-sampling and subsequent up-sampling, that may have been performed on the frame. By analyzing the log-magnitude spectrum, discrepancies between the display resolution of the scene and the lowest resolution with which the scene has been processed may be detected in an automated fashion. 15 Figure 8
SG10201900707UA 2015-06-24 2016-06-23 Determining native resolutions of video sequences SG10201900707UA (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201562184183P 2015-06-24 2015-06-24
US14/879,053 US9734409B2 (en) 2015-06-24 2015-10-08 Determining native resolutions of video sequences
US14/879,045 US9824278B2 (en) 2015-06-24 2015-10-08 Determining native resolutions of video sequences

Publications (1)

Publication Number Publication Date
SG10201900707UA true SG10201900707UA (en) 2019-02-27

Family

ID=57601074

Family Applications (1)

Application Number Title Priority Date Filing Date
SG10201900707UA SG10201900707UA (en) 2015-06-24 2016-06-23 Determining native resolutions of video sequences

Country Status (10)

Country Link
US (3) US9824278B2 (en)
EP (1) EP3314898B1 (en)
JP (1) JP6542398B2 (en)
KR (1) KR102016273B1 (en)
CN (1) CN107925779B (en)
AU (2) AU2016284583B2 (en)
CA (1) CA2989430C (en)
DK (1) DK3314898T3 (en)
MX (1) MX2017016933A (en)
SG (1) SG10201900707UA (en)

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US9824278B2 (en) * 2015-06-24 2017-11-21 Netflix, Inc. Determining native resolutions of video sequences
US11166034B2 (en) 2017-02-23 2021-11-02 Netflix, Inc. Comparing video encoders/decoders using shot-based encoding and a perceptual visual quality metric
US11153585B2 (en) 2017-02-23 2021-10-19 Netflix, Inc. Optimizing encoding operations when generating encoded versions of a media title
US11184621B2 (en) 2017-02-23 2021-11-23 Netflix, Inc. Techniques for selecting resolutions for encoding different shot sequences
US10742708B2 (en) 2017-02-23 2020-08-11 Netflix, Inc. Iterative techniques for generating multiple encoded versions of a media title
US10666992B2 (en) 2017-07-18 2020-05-26 Netflix, Inc. Encoding techniques for optimizing distortion and bitrate
KR102478426B1 (en) * 2018-03-16 2022-12-16 삼성전자주식회사 Method for detecting black-bar included in video content and electronic device thereof
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US10742992B1 (en) * 2019-03-26 2020-08-11 Electronic Arts Inc. Video compression for video games
CN114008666A (en) * 2019-06-18 2022-02-01 华为技术有限公司 Dynamic image resolution assessment
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US11526968B2 (en) 2020-11-25 2022-12-13 Samsung Electronics Co., Ltd. Content adapted black level compensation for a HDR display based on dynamic metadata
CN114040197B (en) * 2021-11-29 2023-07-28 北京字节跳动网络技术有限公司 Video detection method, device, equipment and storage medium

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Also Published As

Publication number Publication date
JP2018524900A (en) 2018-08-30
US20160381401A1 (en) 2016-12-29
CA2989430C (en) 2020-06-02
US9824278B2 (en) 2017-11-21
AU2019200481A1 (en) 2019-02-14
AU2016284583B2 (en) 2018-10-25
US9734409B2 (en) 2017-08-15
AU2016284583A1 (en) 2018-01-18
KR20180020238A (en) 2018-02-27
CN107925779B (en) 2020-06-23
MX2017016933A (en) 2018-08-09
JP6542398B2 (en) 2019-07-10
CA2989430A1 (en) 2016-12-29
CN107925779A (en) 2018-04-17
EP3314898A1 (en) 2018-05-02
US20180012076A1 (en) 2018-01-11
EP3314898B1 (en) 2021-05-12
DK3314898T3 (en) 2021-06-21
US20160379057A1 (en) 2016-12-29
US10140520B2 (en) 2018-11-27
KR102016273B1 (en) 2019-08-29

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