Recommendation ITU-R BT.500-14 (10/2019) Methodologies for the subjective assessment of the quality of television images
     1 Introduction
     2 Common assessment features
          2.1 General viewing conditions
               2.1.1 General viewing conditions for subjective assessments in a laboratory environment
               2.1.2 General viewing conditions for subjective assessments in home environment
               2.1.3 Viewing distance
           Preferred viewing distance
           Design viewing distance
               2.1.4 Observation angle
      Monitor processing
      Monitor resolution
      Monitor adjustment
      Monitor contrast
      Monitor brightness
      Monitor motion artefacts
      Safe areas of wide-screen 16:9 aspect ratio displays
          2.2 Source signals
          2.3 Selection of test materials
               2.3.1 ITU-R Test Sequences
          2.4 Range of conditions and anchoring
          2.5 Observers
               2.5.1 Number of Observers
               2.5.2 Observer screening
               2.5.3 Instructions for the assessment
          2.6 The test session
          2.7 Presentation of the results
     3 Selection of test methods
Annex 1  to Part 1
Analysis and presentation of results
     A1-1 Introduction
     A1-2 Common methods of analysis
     A1-2.1 Calculation of mean scores
     A1-2.2 Calculation of confidence interval
          A1-2.2.1 Processing of raw (uncompensated and/or un-approximated) data
          A1-2.2.2 Processing of compensated and/or approximated data
     A1-2.3 Screening of the observers
          A1-2.3.1 Screening for DSIS, DSCQS and alternative methods except SSCQE method
     A1-2.3.2 Screening for SSCQE method
     A1-3 Processing to find a relationship between the mean score and the objective measure of an image distortion
          A1-3.1 Approximation by a symmetrical logistic function
          A1-3.2 Approximation by a non-symmetrical function
               A1-3.2.1 Description of the function
               A1-3.2.2 Estimation of the parameters of the approximation
          A1-3.3 Correction of the residual impairment/enhancement and the scale boundary effect
          A1-3.4 Incorporation of the reliability aspect in the graphs
     A1-4 Conclusions
Annex 2 to Part 1  Description of a common inter-change data file format
Annex 3  (informative)  to Part 1  Picture-content failure characteristics
     A3-1 Introduction
     A3-2 Deriving the failure characteristic
     A3-3 Use of the failure characteristic
Annex 4  (informative)  to Part 1  Method of determining a composite failure characteristic for programme content and transmission conditions
     A4-1 Introduction
     A4-2 Programme-content analysis
     A4-3 Transmission-channel analysis
     A4-4 Derivation of composite failure characteristics
Annex 5  (informative)  to Part 1  Contextual effect
Annex 6  (informative)  to Part 1  The spatial and temporal information measures
Annex 7  (informative)  to Part 1  Terms and definitions
     1 Introduction
     2 Recommended Image Assessment Methodologies
     3 Remarks
Annex 1  to Part 2  The double-stimulus impairment scale (DSIS) method (the EBU method)
     A1-1 General description
     A1-2 General arrangement
     A1-3 Presentation of the test material
     A1-4 Grading scales
     A1-5 The introduction to the assessments
     A1-6 The test session
Annex 2 to Part 2  The double-stimulus continuous quality-scale (DSCQS) method
     A2-1 General description
     A2-2 General arrangement
     A2-3 Presentation of the test material
     A2-4 Grading scale
     A2-5 Analysis of the results
     A2-6 Interpretation of the results
Annex 3  to Part 2  Single-stimulus (SS) methods
     A3-1 General arrangement
     A3-2 Selection of test material
     A3-3 Test session
     A3-4 Types of SS methods
          A3-4.1 Adjectival categorical judgement methods
          A3-4.2 Numerical categorical judgement methods
          A3-4.3 Non-categorical judgement methods
          A3-4.4 Performance methods
Annex 4  to Part 2  Stimulus-comparison methods
     A4-1 General arrangement
     A4-2 The selection of test material
     A4-3 Test session
     A4-4 Types of stimulus-comparison methods
          A4-4.1 Adjectival categorical judgement methods
          A4-4.2 Non-categorical judgement methods
          A4-4.3 Performance methods
Annex 5 to Part 2  Single stimulus continuous quality evaluation (SSCQE)
     A5-1 Recording device and set-up
     A5-2 General form of the test protocol
     A5-3 Viewing parameters
     A5-4 Grading scales
     A5-5 Observers
     A5-6 Instructions to the observers
     A5-7 Data presentation, results processing and presentation
     A5-8 Calibration of continuous quality results and derivation of a single quality rating
Annex 6 to Part 2  Simultaneous double stimulus for continuous evaluation (SDSCE) method
A6-1 The test procedure
A6-2 The different phases
A6-3 Test protocol features
A6-4 Data processing
A6-5 Reliability of the subjects
Annex 7  to Part 2  Subjective Assessment of Multimedia Video Quality (SAMVIQ)
A7-1 Introduction
A7-2 Explicit, hidden reference and algorithms
A7-3 Test conditions
A7-4 Test organization
A7-5.1 Summary information
     A7-5.2 Methods of analysis
     A7-5.3 Observer Screening
          A7-5.3.1  SAMVIQ screening procedure
     A7-5.3.2 Pearson correlation
     A7-5.3.3 Spearman rank correlation
     A7-5.3.4 Final rejection criteria for discarding an observer of a test
A7-6 Example of Interface for SAMVIQ (Informative)
     A8-1  Laboratory set-up
          A8-1.1 Display selection and set-up
          A8-1.2 Viewing distance
          A8-1.3 Viewing conditions
     A8-2 Viewers
A8-3 The basic test cell
A8-4 Scoring sheet and rating scale
A8-5 Test design and session creation
A8-6 Training
A8-7 Data collection and processing
A8-8 Terms of use of the expert viewing protocol results
A8-9 Limitations of use of the EVP results
Attachment 1  (informative)  to Annex 8  Application of the Expert Viewing Protocol and its behaviour in the presence of a large number of expert assessors
Annex 1  to Part 3  Subjective assessment of standard definition (SDTV) television systems
A1-1 Introduction
     A1-2 Viewing conditions
          A1-2.1 Laboratory environment
          A1-2.2 Home environment
     A1-3 Assessment methods
          A1-3.1 Evaluations of basic picture quality
          A1-3.2 Evaluations of picture quality after downstream processing
          A1-3.3 Evaluations of failure characteristics
          A1-3.4 Picture-content failure characteristics
          A1-3.4.1 Definition of criticality
          A1-3.4.2 Procedure of derivation of image-content failure characteristics
     A1-4 Application notes
Annex 2 to Part 3  Subjective assessment of the image quality of high definition (HDTV) television systems
     A2-1 Viewing environment
     A2-2 Assessment methods
     A2-3 Test materials
Annex 3 to Part 3  Subjective assessment of the image quality of  alphanumeric and graphic images in Teletext and similar text services
     A3-1 Viewing conditions
          A3-2 Assessment methods
          A3-3 Assessment context
     A4-1 General assessment details
     A4-2 Subjective image assessment procedures for constant bit rate multi-programme services
     A4-3 Subjective image assessment procedures for variable bit rate multi-programme services
     A5-1 Introduction
     A5-2 Why a new method based on ‘expert viewing’
     A5-3 Definition of expert subjects
     A5-4 Selection of the assessors
     A5-5 Test material
     A5-6 Viewing conditions
     A5-7 Methodology
          A5-7.1 Evaluation sessions
               A5-7.1.1 Phase I
               A5- Presentation of material
               A5- Judgement scale
               A5- Judgement session
               A5- Processing of test scores
               A5-7.1.2 Phase II
               A5- Grouping the material under test
               A5- Basic expert viewing test sub-session
               A5- Phase II plan
     A5-8 Report
     A6-1 Introduction
A6-2 Common features
     A6-2.1 Viewing conditions
     A6-2.2 Source signals
          A6-2.3 Selection of test materials
          A6-2.4 Range of conditions and anchoring
          A6-2.5 Observers
     A6-2.7 Experimental design
          A6-3 Assessment methods
A7-1 Assessment (perceptual) dimensions
A7-2 Subjective methodologies
A7-3 General viewing conditions
A7-4 Test material
A7-4.1 Use of reference video material
     A7-4.2 Visual comfort limits
     A7-4.3 Discrepancies between left and right images
     A7-4.4 Range, distribution and change in parallax
A7-5 Experimental apparatus
A7-6 Observers
     A7-6.1 Sample size
     A7-6.2 Vision screening
A7-7 Instructions to observers
A7-8 Session duration
A7-9 Variability of responses
A7-10 Viewers’ rejection criteria
A7-11 Statistical analysis
Attachment 1  to Annex 7  Test materials for vision test
A7-1 Vision test