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Light Levels Analysis
Timeline Profile Example

VQV Histogram - Original Image

"Darkish" HDR-PQ Image
Light Levels Analysis

CVC Normalization Example

Color Vectors Correlation™ Light Levels Normalization


CVC™ normalized
original HDR-PQ image
converted to HDR-HLG
UHD-HDR Test Patterns

HDR Test Patterns Suite
Entry Level Set
PQ & HLG versions

VideoQ HDR Tools & Technologies

HDR & SDR: Long Live Peaceful Coexistence!

Dynamic Range Conversion – Necessity & Options
Mixed HDR / SDR environment requires software and hardware engines for verification, auto-enhancement, up-, down-, and cross- conversion within and/or between all HDR / SDR formats and color spaces.

VideoQ Products with HDR support:

– HDR / SDR Multi-format Media Files Viewer/Player/Analyzer/Converter

– VideoQ Productivity Tools, suite of analysis and processing software modules

– Comprehensive Library of sophisticated Test Patterns and Sequences

– Video Analyzer for objective Video Processing Chain Integrity & Performance Validation

Ultimate Toolset for HDR Video Supply Chain Workflows:

1. HDR Video Levels Analyzer software.
It runs in the cloud or on regular workstation computer and measures media files in a variety of files formats at the workflow input, output and intermediate points.
This module generates uniformly structured machine-readable JSON reports and human-readable plots, containing the media package technical parameters, such as media format info, signals and light levels distributions, timeline profiles and clip segmentation parameters.

2. Dynamic Range & Color Gamut Converters (Up, Down, Across), performing BT709 HD SDR content to BT2020 UHD HDR-HLG up-conversion, BT2020 UHD HDR-PQ to BT709 HD SDR down-conversion, HDR-HLG to HDR-PQ cross-conversion, etc.

3. HDR Video Volume Normalizer & HDR10+ Metadata Generator software.
This module applies VideoQ proprietary Color Vectors Correlation™ (CVC) algorithm.
It reads SDR/HDR media file and produces:

a) Video file(s) with the desired (normalized) video and light levels parameters
and / or

HDR10+ control metadata in JSON format, providing for the content normalization by any HDR10+ compliant destination device.

4. HDR / SDR Media Files QC Player with built-in video data and metadata analyzers.
It allows human operator to do spot checks of HDR video content for QC and troubleshouting purposes.
This tool is pivotal for HDR content and HDR metadata validation and verification.

5. Set of Static & Dynamic HDR Test Patterns.
The HDR / SDR test pattern media files
played out by VideoQ or 3rd party generator sent thru the transmission / transcoding / processing / display chain under test in a variety of formats with or without the corresponding metadata.
Unique sophisticated test patterns design, in combination with easy-to-use at-glance evidence approach, increases testing / benchmarking speed and provides for reliable results
The resulting subjective image quality is assessed at the relevant test points by a skilled operator or not so skilled user.
The test patterns also serves for calibration, validation and objective measurement of HDR chain parameters; the objective measurement requires the appropriate tools, such as VideoQ Player-Analyzer.