- EBU QC Id
- 0052B
- Name
- Video Test Pattern Expected
- Status
- published
- Category
- objective
- Lead editor
- Eric Carson
- Aliases
- test card colour bars color bars
- Tags
- video
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- 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
- Used in Checks, the system shall detect whether the expected video test patterns (e.g. bars) appear at expected temporal intervals, optionally it may report in which temporal intervals the expected test patterns are detected.
Used in Reports, the system shall report in which temporal intervals the expected test patterns are detected.
This Test Item can be used in conjunction with EBU QC Test Item 0014B (Test Tones). - References
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Remark: Methods for the Measurement of the performance of Studio Monitors
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SMPTE RP 219-2002
Remark: SMPTE Color Bars
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SMPTE ECR 1-1978
Remark: SMPTE Color Bars
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- Examples
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Input: "Test Pattern Segment Expected" = from 09:59:30:00 to 09:59:40:00
"Test Pattern IDs" = EBU bars 75%
"Minimum Duration" = 2
Input: "Test Pattern Segment Expected" = from 09:59:40:00 to 09:59:50:00
"Test Pattern IDs" = http://host.domain/TestPatterns/Pattern1.png
Input: "Matching Confidence Threshold" = 90%
Output: "Check Result" = trueRemark: Used as a Check
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Input: "Test Pattern Segment Expected" = from 09:30:00:00 to 11:00:00:00
"Test Pattern IDs" = EBU bars 75%, TEST pattern X, http://host.domain/TestPatterns/Pattern1.png
"Minimum Duration" = 2
Input: "Matching Confidence Threshold" = 90%
Output: "Test Pattern Segment" = from 09:59:30:00 to 09:59:50:00
"Test Pattern ID" = EBU bars 75%
"Confidence Level" = 91%
Output: "Test Pattern Segment Detected" = from 10:32:00:00 to 10:32:57:00
"Test Pattern Detected" = "TEST pattern X"
"Confidence Level" = 95%Remark: Used as a Report
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- Remarks
- EBU QC Test Item 0102B (AV Line-Up) can be used where automation is not viable.
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