【英文标准名称】:InformationtechnologyLosslessandnear-losslesscompressionofcontinuous-tonestillimages:BaselineAdoptedbyINCITS;CorrectedandReprinted09/15/2000
【原文标准名称】:信息技术.连续色调静态影像的无损或近无损压缩:被INCITS采用的基线.修订版与再版09/15/2000
【标准号】:ANSIISO/IEC14495-1-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Definesasetoflossless(bit-preserving)andnearlylossless(wheretheerrorforeachreconstructedsampleisboundedbyapre-definedvalue)compressionmethodsforcodingcontinuous-tone,gray-scale,orcolordigitalstillimages.Thisdraftstandard(a)specifiesaprocessforconvertingsourceimagedatatocompressedimagedata;(b)specifiesprocessesforconvertingcompressedimagedatatoreconstructedimagedata;(c)specifiescodedrepresentationsforcompressedimagedata;and(d)providesguidanceonhowtoimplementtheseprocessesinpractice.
【中国标准分类号】:L71;L81
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语


Product Code:SAE J2730
Title:Dynamic Cleat Test with Perpendicular and Inclined Cleats
Issuing Committee:Vehicle Dynamics Standards Committee
Scope:This SAE Recommended Practice describes a test method for measuring the forces and moments generated at a high frequency response spindle when a rolling tire impacts a cleat. The cleat is configured either with its crest perpendicular, 90, to the path of the tire or optionally with its crest inclined at an angle to the path of the tire. The carraige to which the spindle is attached is rigidly constrained in position during each test condition so as to provide a good approximation to fixed loaded radius operation. The method discussed in this document provides impact force and moment time histories essentially free from variations due to tire non-uniformities. The method applies to any size tire so long as the equipment is properly scaled to conduct the measurements for the intended test tire. The data are suitable for use in determining parameters for road load models and for comparative evaluations of the measured properties in research and development. NOTE: Herein, road load models are models for predicting forces applied to the vehicle spindles during operation over irregular surfaces, paved or otherwise. Within the context of this document, forces applied to the road or terrain surfaces are not considered.