SMPTE RP 166-1995 Critical Viewing Conditions for Evaluation of Color Television Pictures.pdf
《SMPTE RP 166-1995 Critical Viewing Conditions for Evaluation of Color Television Pictures.pdf》由会员分享,可在线阅读,更多相关《SMPTE RP 166-1995 Critical Viewing Conditions for Evaluation of Color Television Pictures.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、SMPTE RPULbb 95 8357401 O002008 b48 = SMPTE RECOMMENDED PRACTICE Critical Viewing Conditions for Evaluation of Color Television Pictures RP 166-1995 1 Scope 1.1 This practice specifies the environmental and surround conditions that are required in tele- vision or video program review areas for the c
2、onsistent and critical evaluation of 525-line, 59.94-field television signals and other video program material at different technical facilities on properly aligned color picture monitors. 1.2 This practice also is designed to provide for repeatable color grading or correction and the rendering of s
3、ubjective assessments when used with RP 167. 2 Color monitor characteristics Parameters for the monitor screen at reference white (100 IRE) are as follows: - a chromaticity of illuminant Da; - a screen aim luminance of 120 cci/m2 (35 fL). 3 Observer viewing characteristics 3.1 The observer should ha
4、ve normal color per- ception. 3.2 Adequate time must be allowed for visual adaptation to the viewing environment. 3.3 The observers distance from the monitor screen should be 4-6 picture heights. 3.4 The observer should view the monitor screen at a preferred angle in both the horizontal and vertical
5、 planes of O“ * 5“, but no greater than 2 15“, from the perpendicular to the midpoint of the screen . Page 1 o 4 pages 4 General conditions - Viewing area decor 4.1 The viewing area decor should have a generally neutral matte impression, without dominant colors (see A.4). It is most critical that ar
6、eas in the field of view be devoid of vivid colors. 4.2 Surface reflectances should be nonspecular and should not exceed 10% of the peak lumi- nance value of the monitor white. Surfaces which may be visible in the monitor screens, due to the mirror effect, should have a nonspecular surface reflectan
7、ce of less than 15%. 4.3 Production desk and control console sur- faces should have a generally neutral matte finish without dominant colors or specular features. 5 Surround characteristics 5.1 The surround wall should be either illumi- nated or reflective (see A.2 and A.3). 5.2 The reflective surro
8、und should be a visually neutral surface (preferably white or gray). 5.3 The reflective surround should be illurni- nated with a light quality closely matching illumi- nant D65. Ganerally, the reflective surround receives its illumination from the controlled am- bient lighting in the room (see claus
9、e 7). , 5.4 The reflected light from the surround or background in the field of view should have a peak luminance of 12 cd/m2 (3.5 fL) which is nominally 10% of the monitor screenls) refer- ence white (see A.2). Practice has shown that a Copyright O 1995 by the SOCIETY OF MOTION PICTURE AND TELEVISI
10、ON ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 Approved May 11,1995 (914) 761-1100 SMPTE RP*Lbb 95 H 8357403 O002009 584 W RP 1-19% uniform field is not optimum but that a gradation of intensity from top to bottom, or bottom to top, is more pleasing. 5.5 The surround should have an area,
11、 outside the monitor screen mask, of ideally at least eight times the monitor screen area (see figure 1). 5.6 If two monitor screens are mounted in one monitoring wall, then the total surround area should ideally be five times the total monitor screen area (see figure 2). 5.7 For monitors mounted in
12、 studio control room walls, see annex B. 6 Acceptable methods 6.1 A good practical approach is to have a monitor placed in a free-standing environment 2.5 to 5 screen heights in front of a wall provid- ing the visual surround. The surround receives its illumination from directly controlled and am- b
13、ient lighting in the room (see A.5). 6.2 Another approach is to mount the monitor in a wall with its face approximately flush with the surface of the wall. 7 Viewing room lighting characteristics (see annex C) 7.1 All light sources in use during picture as- sessment or adjustment should have a color
14、 quality closely matching the monitor screen at reference white; i.e., D65 (see A.5). 7.2 The ambient light reflected from the screen of a switched-off monitor should be the lowest possible level (see A.6). 7.3 Reflections on the monitor screen should not cause a perceptible impairment from the norm
15、al viewing position (see A.7). 7.4 The production desk and control consoles where a script is read should be illuminated to a light level of about 100 Ix (10 fc). The illumina- tion on the general working surfaces of the production desks and consoles should be 30-40 Ix (3-4 fc) (see annexes A.8 and
16、C). Figure 1 - Single monitor surround area Figure 2 - Two-monitor surround area SMPTE RP*1bb 95 m 8357401 O002010 2Tb RP 186-1995 Annex A (informative) Additional data A.l Reference white Reference white is obtained when a color video signal at a specified luminance level with zero color subcarrier
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- SMPTERP1661995CRITICALVIEWINGCONDITIONSFOREVALUATIONOFCOLORTELEVISIONPICTURESPDF

链接地址:http://www.mydoc123.com/p-1046400.html