Uniformity Assessment of Digital Prints based on NPS and CSF

2011 ◽  
Vol 291-294 ◽  
pp. 2922-2926
Author(s):  
Ling Jun Kong ◽  
Zhong Ming Jiang ◽  
Xue Ling Gao
Keyword(s):  
Quality Factor ◽  
Measurement Method ◽  
Quantitative Measurement ◽  
Visual Assessment ◽  
Measurement Technology ◽  
Print Quality ◽  
Essential Quality ◽  
Digital Print ◽  
Digital Prints

The standard for digital print quality and its measurement technology is now under consideration, and uniformity evaluation should be an important and essential quality factor. The paper provides a practical quantitative measurement method for traditional visual assessment on uniformity, and proposes a simple and effective IUI index to evaluate the uniformity of digital prints through NPS curve of the printed flat areas and CSF of HVS. The validity of the IUI is demonstrated through its applications in the uniformity assessment of the digital prints.

scholarly journals Non-Contact Respiration Measurement Method Based on RGB Camera Using 1D Convolutional Neural Networks

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3456
Author(s):  
Hyeon-Sang Hwang ◽  
Eui-Chul Lee
Keyword(s):  
Measurement Method ◽  
Respiratory Diseases ◽  
Region Of Interest ◽  
Average Error ◽  
Measurement Technology ◽  
Altman Analysis ◽  
Clinical Scenarios ◽  
Actual Environment ◽  
Error Bias ◽  
Robust To Noise

Conventional respiration measurement requires a separate device and/or can cause discomfort, so it is difficult to perform routinely, even for patients with respiratory diseases. The development of contactless respiration measurement technology would reduce discomfort and help detect and prevent fatal diseases. Therefore, we propose a respiration measurement method using a learning-based region-of-interest detector and a clustering-based respiration pixel estimation technique. The proposed method consists of a model for classifying whether a pixel conveys respiration information based on its variance and a method for classifying pixels with clear breathing components using the symmetry of the respiration signals. The proposed method was evaluated with the data of 14 men and women acquired in an actual environment, and it was confirmed that the average error was within approximately 0.1 bpm. In addition, a Bland–Altman analysis confirmed that the measurement result had no error bias, and regression analysis confirmed that the correlation of the results with the reference is high. The proposed method, designed to be inexpensive, fast, and robust to noise, is potentially suitable for practical use in clinical scenarios.

Does Stimulant Pretreatment Modify Atomoxetine Effects on Core Symptoms of ADHD in Children Assessed by Quantitative Measurement Technology?

2012 ◽  
Vol 18 (2) ◽  
pp. 105-116 ◽  
Author(s):  
Peter M. Wehmeier ◽  
Ralf W. Dittmann ◽  
Tobias Banaschewski ◽  
Alexander Schacht
Keyword(s):  
Quantitative Measurement ◽  
Measurement Technology ◽  
Core Symptoms

scholarly journals Quantitative Measurement Method for Possible Rib Fractures in Chest Radiographs

2013 ◽  
Vol 19 (3) ◽  
pp. 196 ◽  
Author(s):  
Jaeil Kim ◽  
Sungjun Kim ◽  
Young Jae Kim ◽  
Kwang Gi Kim ◽  
Jinah Park
Keyword(s):  
Measurement Method ◽  
Quantitative Measurement ◽  
Rib Fractures ◽  
Chest Radiographs

MACRO- AND MICRO-DISPERSION OF SILICA IN TIRE TREAD COMPOUNDS: ARE THEY RELATED?

2021 ◽  
Author(s):  
J. Jin ◽  
W. Kaewsakul ◽  
J.W.M. Noordermeer ◽  
W.K. Dierkes ◽  
A. Blume
Keyword(s):  
Measurement Method ◽  
Silane Coupling Agent ◽  
Quantitative Measurement ◽  
Large Problem ◽  
Common View ◽  
Surface Areas ◽  
Silane Coupling ◽  
Filler Dispersion ◽  
The Common ◽  
Direct Measurement Method

ABSTRACT The dispersion of rubber fillers, such as silica, can be divided into two categories: macro- and micro-dispersion. Both dispersions are important; however, to achieve the best reinforcement of rubber, micro-dispersion of silica is crucial. The common view is that these filler dispersions are strongly related. The micro-dispersion is understood as the consequence of the continuous breakdown of filler clusters from macro-dispersion. Yet, a large problem is that an objective unequivocal direct measurement method for micro-dispersion is not available. In this study, a set of parameters is defined that are anticipated to have an influence on the micro- as well as the macro-dispersion. Mixing trials are performed with varying silanization temperature and time, different amounts of silane coupling agent, and by using silicas with different structures and specific surface areas. The degrees of micro- and macro-dispersion are evaluated by measuring the Payne effect as an indirect method for micro-dispersion and using a dispergrader for quantitative measurement of macro-dispersion. The results show that the filler dispersion processes happen simultaneously but independently. These results are supported by earlier work of Blume and Uhrlandt, who stated as well that micro- and macro-dispersion are independent. The major influencing factors on micro- and macro-dispersion of silica are also identified.

scholarly journals A Parallel-Phase Demodulation-Based Distance-Measurement Method Using Dual-Frequency Modulation

2019 ◽  
Vol 10 (1) ◽  
pp. 293
Author(s):  
In-Gyu Jang ◽  
Sung-Hyun Lee ◽  
Yong-Hwa Park
Keyword(s):  
Frequency Modulation ◽  
Measurement Method ◽  
Continuous Wave ◽  
Measurement Range ◽  
Distance Measurement ◽  
Measurement Technology ◽  
Dual Frequency ◽  
Distance Measurements ◽  
Time Required ◽  
Phase Demodulation

Time-of-flight (ToF) measurement technology based on the amplitude-modulated continuous-wave (AMCW) model has emerged as a state-of-the-art distance-measurement method for various engineering applications. However, many of the ToF cameras employing the AMCW process phase demodulation sequentially, which requires time latency for a single distance measurement. This can result in significant distance errors, especially in non-static environments (e.g., robots and vehicles) such as those containing objects moving relatively to the sensors. To reduce the measurement time required for a distance measurement, this paper proposes a novel, parallel-phase demodulation method. The proposed method processes phase demodulation of signal in parallel rather than sequentially. Based on the parallel phase demodulation, 2π ambiguity problem is also solved in this work by adopting dual frequency modulation to increase the maximum range while maintaining the accuracy. The performance of proposed method was verified through distance measurements under various conditions. The improved distance measurement accuracy was demonstrated throughout an extended measurement range (1–10 m).

Quantitative measurement method for impact basin characteristics based on localized spherical harmonics

Icarus ◽  
2014 ◽  
Vol 228 ◽  
pp. 315-323 ◽  
Author(s):  
Yoshiaki Ishihara ◽  
Yuki Saruwatari ◽  
Akihiro Sawada ◽  
Tomokatsu Morota ◽  
Yoshihiro Hiramatsu
Keyword(s):  
Spherical Harmonics ◽  
Measurement Method ◽  
Quantitative Measurement

scholarly journals Vision-based Deformation Measurement for Pile-soil Testing

2019 ◽  
Vol 275 ◽  
pp. 03009
Author(s):  
Kun Zhou ◽  
Linhua Chen ◽  
Shanshan Yu
Keyword(s):  
Measurement Method ◽  
Optical Measurement ◽  
High Sensitivity ◽  
Steel Tube ◽  
Image Features ◽  
Deformation Measurement ◽  
Measurement Technology ◽  
Full Field ◽  
Progressive Development ◽  
Point Tracking

Image measurement technology has been widely used in monitoring the deformation of the soil field around the pile with its advantages of no damage, no contact, full-field measurement, no added quality and high sensitivity. But there are few researches on image-based bearing deformation measurement of the pile. Through an indoor pile-soil semi-model test, the rigid body displacement and load-bearing deformation of a new type of prefabricated steel tube pile foundation under horizontal load was measured based on image features. In this study, the concept of optical extensometer is first applied to the measurement of local average strain of a non-uniform deformed structure. Based on an improved feature point tracking algorithm SURF-BRISK, non-contact measurement of tiny strain of pile body is realized. In addition, based on DIC technology, this study also obtained the progressive development of displacement field of soil around pile. The above work fully reflects the non-contact convenience and full-field richness of the optical measurement method compared with the traditional measurement method.

Backside wear in total knee replacement: A new quantitative measurement method and a comparison of polished cobalt-chromium tibial trays with titanium tibial trays

Wear ◽  
2021 ◽  
Vol 466-467 ◽  
pp. 203552
Author(s):  
Steffen Braun ◽  
Maximilian Uhler ◽  
Therese Bormann ◽  
Stefan Schroeder ◽  
Sebastian Jaeger ◽  
...  
Keyword(s):  
Total Knee Replacement ◽  
Knee Replacement ◽  
Measurement Method ◽  
Quantitative Measurement ◽  
Cobalt Chromium ◽  
Backside Wear ◽  
Total Knee

scholarly journals In-Field Digital Photography and the Curation of Associated Records: Not All Prints Are Created Equal

2019 ◽  
Vol 7 (3) ◽  
pp. 302-310 ◽  
Author(s):  
Michelle K. Knoll ◽  
A. Carver-Kubik
Keyword(s):  
Image Quality ◽  
Direct Effect ◽  
Digital Photography ◽  
Digital Content ◽  
Digital Cameras ◽  
The World ◽  
Digital Print ◽  
Digital Prints ◽  
Print Process

AbstractWith the advent of commercially available digital cameras in the late 1990s resulting in the near-exclusion of analog photographic prints today, most archaeological repositories around the world have a mix of analog and digital photographic prints. That ratio is increasingly moving toward digital print processes, of which there are several types. To minimize the loss of image quality, collection managers must become familiar with the unique curation challenges of photographic prints from digitally created images. Likewise, creators of digital content must be aware that choices made when selecting a print process for reposit will have a direct effect on image and print permanence. Site photographs are critical evidence of archaeological activity, and so the preservation of digital prints is in the interest, and is the responsibility, of collection managers and archaeologists alike.

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