{"id":422457,"date":"2024-10-20T06:41:19","date_gmt":"2024-10-20T06:41:19","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-62977-5-22021-2\/"},"modified":"2024-10-26T12:31:54","modified_gmt":"2024-10-26T12:31:54","slug":"bsi-pd-iec-tr-62977-5-22021-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-62977-5-22021-2\/","title":{"rendered":"BSI PD IEC TR 62977-5-2:2021"},"content":{"rendered":"

This part of IEC 62977, which is a Technical Report, describes the visual assessment method of the viewing direction characteristics of display devices. This document reviews the visual assessment of viewing direction by using special test patterns to estimate colour changes, image structure, and image luminance.<\/p>\n

Experimental results are shown to reveal the effectiveness of this kind of visual assessment.<\/p>\n

This method is a valuable tool for identifying image quality issues, but physical measurements will be used to confirm display performance specifications.<\/p>\n

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NOTE The visual assessment results will depend on the test pattern parameters and display setup conditions. As the viewing direction changes, characteristics such as contrast ratio, resolution, and device colour-shift simultaneously change in the perceived image.<\/p>\n<\/blockquote>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
6<\/td>\nFOREWORD <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n3.2 Abbreviated terms
4 Introduction to visual assessment <\/td>\n<\/tr>\n
11<\/td>\nFigures
Figure 1 \u2013 Comparison between the proposed visual assessmentand the conventional physical measurement <\/td>\n<\/tr>\n
12<\/td>\n5 Standard measuring equipment and coordinate system
5.1 Light measuring devices
5.2 Viewing direction coordinate system
Figure 2 \u2013 Definition of viewing directions by the spherical angles of \u03b8 and \u03c6 <\/td>\n<\/tr>\n
13<\/td>\n6 Test patterns
6.1 Geometrical construction
Figure 3 \u2013 Layout for horizontal viewing direction
Tables
Table 1 \u2013 Measurement directions for DUTs in living rooms <\/td>\n<\/tr>\n
14<\/td>\n6.2 Colour assignment
Figure 4 \u2013 Pattern structures <\/td>\n<\/tr>\n
15<\/td>\nTable 2 \u2013 Reference colours of test pattern <\/td>\n<\/tr>\n
16<\/td>\n6.3 Dots fill factor
Figure 5 \u2013 Colour assignment of test pattern <\/td>\n<\/tr>\n
17<\/td>\n7 Visual assessment method
7.1 General description of the assessment
7.2 Test room conditions
Figure 6 \u2013 Test environment
Table 3 \u2013 Test room condition <\/td>\n<\/tr>\n
18<\/td>\n7.3 DUT parameters
7.4 Observers
Table 4 \u2013 Experimental setup of the DUT <\/td>\n<\/tr>\n
19<\/td>\n7.5 Instructions for visual assessment method
Figure 7 \u2013 Average CMF according to ethnic origin <\/td>\n<\/tr>\n
20<\/td>\n7.6 Repeatability
7.7 Presentation and interpretation of the experimental assessment results
Figure 8 \u2013 Assessment procedure <\/td>\n<\/tr>\n
21<\/td>\nFigure 9 \u2013 Visual assessment results: statistical plot (upper figure)and mean recognition rates (lower figure) <\/td>\n<\/tr>\n
22<\/td>\nFigure 10 \u2013 Statistical plot (upper) and mean ofcolour differences (lower) of test patterns <\/td>\n<\/tr>\n
23<\/td>\nFigure 11 \u2013 Process of S-CIELAB transformation
Figure 12 \u2013 Contrast sensitivity function of HVS <\/td>\n<\/tr>\n
24<\/td>\nFigure 13 \u2013 S-CIELAB results: statistical plot (upper)and mean colour difference (lower) <\/td>\n<\/tr>\n
25<\/td>\nFigure 14 \u2013 Correlation between physical measures and S-CIELAB results
Figure 15 \u2013 Correlation between visual assessment and S-CIELAB method <\/td>\n<\/tr>\n
26<\/td>\nFigure 16 \u2013 Pattern dependency
Table 5 \u2013 Correlation coefficients <\/td>\n<\/tr>\n
27<\/td>\nFigure 17 \u2013 Observer dependency <\/td>\n<\/tr>\n
28<\/td>\nAnnex A (informative)Fill factor dependency
Figure A.1 \u2013 Fill factor variation <\/td>\n<\/tr>\n
29<\/td>\nFigure A.2 \u2013 FF dependency <\/td>\n<\/tr>\n
30<\/td>\nFigure A.3 \u2013 Colour difference relationship between pictorialimage and test patterns with various FF <\/td>\n<\/tr>\n
31<\/td>\nAnnex B (informative)Display white luminance dependency
Table B.1 \u2013 Experimental setup and parameters <\/td>\n<\/tr>\n
32<\/td>\nFigure B.1 \u2013 Colour reproduction performance of the DUT <\/td>\n<\/tr>\n
33<\/td>\nFigure B.2 \u2013 White luminance dependency <\/td>\n<\/tr>\n
34<\/td>\nAnnex C (informative)Pattern generator <\/td>\n<\/tr>\n
35<\/td>\nFigure C.1 \u2013 Pattern generator user interface <\/td>\n<\/tr>\n
36<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Electronic displays – Visual assessment. Colour discrimination according to viewing direction<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":422465,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-422457","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/422457","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/422465"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=422457"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=422457"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=422457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}