BS ISO 7565-1994 Micrographics - Readers for transparent microforms - Measurement of characteristics《缩微摄影技术 透明缩微胶片阅读器 特性测量》.pdf
《BS ISO 7565-1994 Micrographics - Readers for transparent microforms - Measurement of characteristics《缩微摄影技术 透明缩微胶片阅读器 特性测量》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 7565-1994 Micrographics - Readers for transparent microforms - Measurement of characteristics《缩微摄影技术 透明缩微胶片阅读器 特性测量》.pdf(19页珍藏版)》请在麦多课文档分享上搜索。
1、I BSI BS*ISO*7565 93 3624bb9 0393942 436 BRITISH STANDARD Implementation of IS0 7565 : 1993 Micrographics - Readers for transparent microforms - Measurement of characteristics 7565 : 1993 BS IS0 BSI BS*IS0*7565 93 3b24bb 0393943 372 BS IS0 7565 : 1993 National foreword This British Standard reproduc
2、es verbatim IS0 7565 : 1993 and implements it as the UK national standard. This British Standard is published under the direction of the Information and Documentation Standards Policy Committee whose Technical Committee DOT/16 has the responsibility to: - aid enquirers to understand the text; - pres
3、ent to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; - monitor related international and European developments and promulgate them in the UK. NUTE. International and European Standards, as well as overseas standards,
4、 are available from Customer Services, Publications, BSI, Linford Wood, Milton Keynes, MK14 6LE. Compliance with a British Standard does not of itself confer immunity from legal obligations. I NTERNATIONAL STANDARD IS0 7565 First edition 1993-09-01 Micrographics - Readers for transparent microforms
5、- Measurement of character ist ics Micrographie - Appareils de lecture de microformes - Mesurage des caractristiques Reference number IS0 7565:1993(E) BSI BS*ISO*75bS 93 = 1624bb 0371945 145 IS0 7565:1993(E) Contents Page 1 Scope 2 Normative references . 3 Definitions . 4 Magnification . 4.1 Apparat
6、us 4.2 Procedure . 5 Resolution 5.1 Test charts 5.2 Magnifier . 5.3 Procedure . 6 Geometric distortion 6.1 Test film 6.2 Procedure . 7 Screen luminance 7.1 General conditions 7.2 Procedure . 8 Screen contrast . 8.1 Apparatus 8.2 Screen contrast measurements . 9 Film gate temperature measurements . 9
7、.1 Apparatus 9.2 Procedure . 1 1 1 1 1 3 3 3 3 3 3 3 3 5 5 6 6 6 7 8 8 8 O IS0 1993 All rights reserved . No part of this publication may be reproduced or utilized in any form or by any means. electronic or mechanical. including photocopying and microfilm. without per- mission in writing from the pu
8、blisher . International Organization for Standardization Case Postale 56 CH-1 21 1 Genve 20 Switzerland Printed in Switzerland II BSI BS*IS0*7565 93 3b24669 039394b 081 IS0 7565:1993(E) Annexes A Importance of the luminance measurement . 9 A.l Screen characteristics 9 A.2 Screen observation 9 A.3 Ev
9、aluation of screen diffusion characteristics . 9 B Field method using a luxmeter 12 B.l Presentation . 12 B.2 Method . 12 . III BSI BS*ISO*75b5 73 M Lb24bb9 039L747 TL M IS0 7565:1993(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards
10、 bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organiza
11、tions, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circu
12、lated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 7565 was prepared by Technical Committee ISOflC 171, Micrographics and optical memories for document and image recording,
13、 storage and use. Annexes A and B of this International Standard are for information only. IV BSI BS*IS0*7565 93 m 3624669 0393948 954 m INTERNATIONAL STANDARD IS0 7505:1993(E) Micrographics - Readers for transparent microforms - Measurement of characteristics 1 Scope This International Standard spe
14、cifies methods and in- struments for measuring the characteristics for readers specified in IS0 6198. It applies to magni- fication, resolution, distortion, screen luminance, screen contrast and film gate temperatures. 2 Normative references The following standards contain provisions which, through
15、reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applyi
16、ng the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently valid International Standards. IS0 5-1 : 1984, Photography - Density measurements - Part 1: Terms, symbols and notations. IS0 5-2:1991, Photography - Density measurements - Part 2
17、: Geometric conditions for transmission density. IS0 5-3: 1984, Photography - Density measurements - Part 3: Spectral conditions. I SO 5-4: 1983, Photography - Density measurements - Part 4: Geometric conditions for reflection density. IS0 446:1991, Micrographics - IS0 character and IS0 test chart N
18、o. 1 - Description and use. IS0 3334: 1 989, Micrographics - IS0 resolution test chart No. 2 - Description and use. IS0 61 96-1 :1980, Micrographics - Vocabulary - Section 01: General terms. IS0 6196-2:1982, Micrographics - Vocabulary - Section O.?: Image positions and methods of recording. IS0 61 9
19、6-3:1983, Micrographics - Vocabulary - Part 03: Film processing. IS0 61 96-4:1987, Micrographics - Vocabulary - Part 04: Materials and packaging. IS0 61 96-5:1987, Micrographics - Vocabulary - Part 05: Quality of images, legibility, inspection. IS0 61 96-6:1992, Micrographics - Vocabulary - Part 06:
20、 Equipment. IS0 61 96-7: 1992, Micrographics - Vocabulary - Part 7: Computer micrographics. IS0 61 98:-”, Micrographics - Readers for trans- parent microforms - Performance characteristics. CIE Publication No. 17.4:1987, International lighting vocabulary. 3 Definitions For the purposes of this Inter
21、national Standard, the definitions given in IS0 6196 apply. 4 Magnification 4.1 Apparatus 4.1.1 Magnification test target, consisting of a transparent stable material upon which is marked a graduated scale with an overall accuracy of f 0,5 % and which, when projected on the screen, will cover at lea
22、st 80 % of the reader screen width or height of 1) To be published. 1 BSI BS*ISO*75b5 93 lb24bb9 0393947 890 = IS0 7565:1993(E) the measurement area as shown in figure 1. The dis- tance between graduations shall be not greater than 0,2 mm. The magnification test target may be in- cluded with other t
23、est objects within the image frame. 4.1.2 Graduated reference scale, of at least scope may be used on front-projection readers. 200 mm in length, graduated in millimetres, having an overall accuracy of f 0,5 %, for measuring the image of the test target on the screen. 4.1.3 Magnifier, if necessary,
24、having a magnification between x 3 and x 12, for comparing the image length on the screen with the divisions on the gradu- ated reference scale. A hand-held magnifier may be used on rear-projection readers and a mounted tele- NOTE - Measurement area of the screen is defined as the central area forme
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