Accession Number : ADA257205
Title : Color Test Chart for Facsimile
Descriptive Note : Final rept.
Corporate Author : DELTA INFORMATION SYSTEMS INC HORSHAM PA
Report Date : Dec 1991
Pagination or Media Count : 51
Abstract : The purpose of this project was to generate a new set of test charts and standard images that can be used by experimenters working in the field of color facsimile. The NCS has been a leader in the development and promulgation of standardized imagery for facsimile. The NCS sponsored the scanning of documents used by the International Telegraph and Telephone Consultative Committee (CCITT) at resolutions of 200, 240, 300, 400 and 480 lines per inch and stored the resultant data on tape. This data has been used by many experimenters in the development of standard compression algorithms, for digital facsimile. This work contributed significantly to the development of high resolution facsimile standards which will be of considerable value to the U.S. Government. In addition, the NCS sponsored the preparation of standard gray scale images, representative of continuous tone pictures to be transmitted through Group 4 facsimile systems. All of this past work has been directly solely at black-white imagery. This report is comprised of five sections. Section 1 provides a brief description of the objectives of the study and an outline of the contents of this report. Section 2 discusses test chart and test image requirements and describes the general set of features that satisfy the requirements. Section 3 contains Facsimile Images Color Test descriptions of the charts currently under development. Section 4 describes the scanned images, and Section 5 is a summary of the work performed and recommendations for further work.
Descriptors : *IMAGES , *FACSIMILE EQUIPMENT , SCANNING , TEST AND EVALUATION , ALGORITHMS , REQUIREMENTS , PREPARATION , STANDARDS , CHARTS , GRAY SCALE , PICTURES , INTERNATIONAL , DOCUMENTS , RESOLUTION , HIGH RESOLUTION , SCALE , COLORS
Subject Categories : Non-radio Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE