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Fluke 9640A RF Reference Source combines level precision,dynamic range,frequency capability in a single instrument
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作者 Stream lines workload enables automationof calibration procedures with MET/CAL(Plus Calibration Measurement Software 《国外电子测量技术》 2007年第1期81-81,共1页
关键词 Source RF Fluke 9640A RF Reference Source combines level precision dynamic range frequency capability in a single instrument
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COLOR AC-PDP ENHANCEMENT OF LOW LEVELS IMAGE QUALITY WITH DYNAMIC MODIFYING SUB-FIELDS CODE 被引量:1
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作者 魏巍 孙鉴 《Journal of Pharmaceutical Analysis》 SCIE CAS 2006年第2期126-130,145,共6页
Based on the "Grayscales average distribution" method which equally distributes the input gray levels to output gray levels, three improved methods named: "Reduce the gray range expressed by the less si... Based on the "Grayscales average distribution" method which equally distributes the input gray levels to output gray levels, three improved methods named: "Reduce the gray range expressed by the less significant subfields", "Low levels preset" and "Modify the exponent of inverse-gamma function" are proposed in this paper. Using these methods, the inverse-gamma relation subfields code can be obtained easily which can improve the low level expressions of AC-PDP. And a program, "gray scales distribution validate program", which can enhance the expressions of the demanded gray levels range, is also proposed in this paper. 展开更多
关键词 Color AC-PDP grayscales average distribution gray gray levels range inverse-gamma function
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