Accuracy of measurement

In this paper, an algorithm to detect multiple planes on point cloud data was developed based on RANSAC algorithm to evaluate the accuracy of point cloud measured by structural light. To evaluate the accuracy of the point cloud obtained, two-step height parts are used. The planes are detected and the distance between them needs to be measured with high accuracy

6p trinhthamhodang1218 04-03-2021 0 0   Download

The purpose of Measurement, Instrumentation, and Sensors Handbook CRCnetBase 1999 is to provide a reference that is both concise and useful for engineers in industry, scientists, designers, managers, research personnel and students, as well as many others who have measurement problems. The CD-ROM covers an extensive range of topics that comprise the subject of measurement, instrumentation, and sensors. The CD-ROM describes the use of instruments and techniques for practical measurements required in engineering, physics, chemistry, and the life sciences.

0p camchuong_1 04-12-2012 109 25   Download

I have been associated with uncertainty calculations for quite sometime. Asia Metrology Program (APMP) took interest in unification of expressing the measurement results along with uncertainty. In those days the uncertainty components were divided according to source of errors. The errors were named as random and systematic errors. Hence components of uncertainty were named random uncertainty and systematic uncertainty. Around 1980, BIPM took initiative by circulating questioners to the countries who were members of Metre Convention.

342p camchuong_1 04-12-2012 39 3   Download

In a structured light system, calibration is an important step for estimating the intrinsic and extrinsic parameters of the camera and projector. System calibration errors directly affect the measurement errors. Therefore, the accurate calibration is the main prerequisite for a successful and accurate surface reconstruction. In this paper, the effect of checker size and checkerboard angle on the accurate calibration for a structured light system is presented.

6p trangcham1896 10-12-2018 10 0   Download

The study evaluates and compares the accuracy of nine peak flow meters (“PFMs”) and spirometers that are currently available in Europe and have Conformité Européene (“CE”) marking. The CE marking is a manufacturer’s declaration that their product complies with European health regulations and it is a requirement for marketing medical devices in Europe.

5p vimaine2711 26-03-2021 0 0   Download

Every day we make measurements, yet, do we consider the accuracy of that measurement? If you are a provider of service or product then this publication will help you to take your quality systems to levels that can save you time and money, improving your methodology and giving you a clearer understanding on how to measure up. In many cases measurements are made as a guide for approximating, therefore...

42p namde04 03-05-2013 54 7   Download

In particular, we examine whether the discourse coherence found in an essay, as de ned by a measure of relative proportion of Rough-Shift transitions, might be a signi cant contributor to the accuracy of computer-generated essay scores. Our positive nding validates the role of the Rough-Shift transition and suggests a route for exploring Centering Theory's practical applicability to writing evaluation and instruction.

8p bunrieu_1 18-04-2013 43 3   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài:Measuring the accuracy of genome-size multiple alignments...

11p thulanh19 05-11-2011 38 2   Download

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Accuracy of biplane x-ray imaging combined with model-based tracking for measuring in-vivo patellofemoral joint motion

8p panasonic10 13-01-2012 37 2   Download

In this paper, we study different centrality measures being used in predicting noun phrases appearing in the abstracts of scientific articles. Our experimental results show that centrality measures improve the accuracy of the prediction in terms of both precision and recall. We also found that the method of constructing Noun Phrase Network significantly influences the accuracy when using the centrality heuristics itself, but is negligible when it is used together with other text features in decision trees. ...

6p bunbo_1 17-04-2013 38 2   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Correlating measurements across samples improves accuracy of large-scale expression profile experiments...

0p thulanh21 15-11-2011 32 1   Download

When one considers the criteria according to which an analytical procedure is selected, precision and accuracy are usually the first time to come to mind. Precision and accuracy together determine the error of an individual determination. They are among the most important criteria for judging analytical procedures by their results. Precision refers to the reproducibility of measurement within a set, that is, to the scatter of dispersion of a set about its central values. The term ‘set’ is defined as referring to a number (n) of independent replicate measurements of some property.

204p kmkmkmkmkm 06-09-2012 25 1   Download

Accurate log processing by harvesters during bucking is of great importance if round timber is to be fully exploited for maximum value recovery. Logs that exceed the target length can cause difficulties in further processing (e.g., in the pulp industry), while logs which are too short may not be of further use (e.g., boards for pallets).

6p danhdanh11 11-01-2019 9 0   Download

This weighting method based on statistical estimation of the importance of a word for an SMS categorization problem. The experiments reported in the paper shows that this weighting method improves significantly the classification accuracy as measured on many categorization tasks.

6p girlsseek 27-02-2019 17 0   Download

In this paper, the effect of checker size and checkerboard angle on the accurate calibration for a structured light system is presented. Relations between calibration error and checker size, fitting plane error and checkerboard angle are also studied.

6p visasuke2711 25-04-2019 6 0   Download

The study was conducted to forecast the price of black pepper in one of the major markets of Karnataka state as the state ranks first position in production of pepper in India. The Gonikoppal market in Kodagu district was selected purposively on the basis of highest area and production in the state. The monthly prices of black pepper in Gonikoppal market were collected from the Karnataka State Agricultural Marketing Board, Bangalore, Karnataka state for the year 2008-09 to 2017-18.

11p nguaconbaynhay1 04-12-2019 11 0   Download

Previous studies have examined correlations between BMI calculated using parent-reported and directlymeasured child height and weight. The objective of this study was to validate correction factors for parent-reported child measurements.

8p vidr2711 19-02-2020 6 0   Download

When using the useful 2013 Fenton Chart, data should be interpreted with caution taking into account two aspects: the physiologic loss of body water after birth for the weight curves, and the questionable accuracy of the birth length curves considering the heterogeneity and reliability of the methods used in the original measurements.

4p vinatri2711 29-02-2020 5 0   Download

Currently, mobile networks and their applications have been developed quickly. Mobile users not only request various types of information, but also demand on Quality of Service (QoS). One of the measures to improve QoS is to apply mobile users’ location prediction method.

10p vitomato2711 11-03-2020 8 0   Download

The infrared tympanic thermometer (IRTT) is a popular method for temperature screening in children, but it has been debated for the low accuracy and reproducibility compared with other measurements.

10p viorochimaru2711 29-05-2020 5 0   Download