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0052BI - Video Test Pattern Not Expected
published
0052BI v1.0
Item image
TEST PATTERN NOT EXPECTED
Check for Test Patterns not exp.
EBU Tech 3325, SMPTE ECR 1, ...
Patterns Meet Requirements
Pattern Present, Type, Location
https://qc.ebu.io/items/0052BI/versions/1-0-0/
Check
Summary
EBU QC Id
0052BI
Name
Video Test Pattern Not Expected
Status
published
Category
objective
Lead editor
Eric Carson
Aliases
test card colour bars color bars
Tags
video
Versions
Version Status Edition date Saved by Note
Details
Description
A test pattern is a short video sequence showing a sequence of (often still) images with particular characteristics.
For video experts, test patterns allow to quickly detect problems in a video chain and facilitate calibration, alignment, and matching of video devices.
Definition
The system shall detect whether some of the specified video test patterns (e.g. bars) appear where they are not expected. Optionally it may report in which temporal intervals the not expected test patterns are detected.
References

  • EBU Tech 3325

    Remark: Methods for the Measurement of the performance of Studio Monitors

  • SMPTE RP 219-2002

    Remark: SMPTE Color Bars

  • SMPTE ECR 1-1978

    Remark: SMPTE Color Bars

Examples

  • Input: "Test Pattern Segment" from 11:00:00:00 to 11:00:10:00
    "Test Pattern IDs" = Pattern X
    "Minimum Duration" = 1.20
    Input: "Matching Confidence Threshold"=70%
    Output: "Check Result" = true

    Remark: Example with single interval to check.

  • Input: "Test Pattern Segment" from 11:00:00:00 to 11:00:10:00
    "Test Pattern IDs" = EBU bars 75%, EBU bars 100%, https://refsite/TestPatterns/SMPTE_xyz.png
    "Minimum Duration" = 2.40
    Input: "Test Pattern Segment" from 11:59:50:00 to 12:00:10:00
    "Test Pattern IDs" = EBU bars 75%
    "Minimum Duration" = 2.00
    Input: "Matching Confidence Threshold" = 80%
    Output: "Check Result" = false
    Output: "Test Pattern Segment": from 11:00:12:00 to 11:00:15:03
    "Test Pattern ID" = EBU bars 75%
    "Confidence Level" = 89%

    Remark: Example with two intervals to check with different lists of test patterns.

  • uploads/items/example_images/0052Bex001.jpg

  • uploads/items/example_images/0052Bex002.jpg

Input parameters
Name Default value Description Data model name Unit Locator
Output parameters
Name Alias Description Data model name Unit Locator
Test material
Title Version Download
Remarks
Remarks
This Item provides a Check only. To check for and report expected Test Patterns within a video please see the complementary EBU QC Test Item 0052B (Video Test Pattern Expected)

EBU QC Test Item 0102B (AV Line-Up) can be used where automation is not viable.
User discussions
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