Reducing the additional error caused by the time‐difference method in transit‐time UFMs

Yazdanshenasshad, B.; Safizadeh, Mir Saeed

doi:10.1049/iet-smt.2018.5106

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…e time difference method mainly uses the difference of two or several consecutive frames in the digital video sequence to extract the moving target of basketball shooting training [29][30][31]. e basic process of the time difference method is shown in Figure 2.…”

Section: Extracting the Goal Of Basketball Shooting Trainingmentioning

confidence: 99%

Standardized Judgment Method of Shooting Training Action Based on Digital Video Technology

Guo

Hui

2021

Scientific Programming

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Aiming at the difficulty of standardizing the action of basketball shooting training, a new method of standardizing the action of basketball shooting training is proposed based on digital video technology. The digital video signal representation, video sequence coding data structure, and video sequence compression coding method are analyzed, and the pixels of basketball shooting training action position space are sampled to collect basketball shooting training images. The time difference method is used to extract the movement target of basketball shooting training from a digital video sequence. Based on digital video technology, the initial background image is estimated, and the update rate is introduced to update the background estimation image. According to the pixel value sequence of the basketball shooting training image, the pixel model of the basketball shooting training image is defined and modified. By judging whether the defined pixel value matches the background parameter model, the standardization of shooting training can be realized. The experimental results show that the proposed method has good stability, high precision, and short time in determining the standardization of shooting movement, can correct the wrong shooting movement in real time, and can effectively guide basketball shooting training.

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Section: Extracting the Goal Of Basketball Shooting Trainingmentioning

confidence: 99%

Standardized Judgment Method of Shooting Training Action Based on Digital Video Technology

Guo

Hui

2021

Scientific Programming

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“…Some UFM researchers suggest reducing the amount of electronic calculations in them (Yazdanshenasshad & Safizadeh, 2019). As a result, its required power will decrease and additional errors that arise in such a modified approximate method are eliminated by mathematical procedures.…”

Section: Introductionmentioning

confidence: 99%

The Use of an Ultrasonic Flow Meter in the Zone of Influence of Indirect Sections of the Water Pipeline

Bosak¹,

Matlai²,

Hvozdetskyi³

et al. 2022

Theory build. pract.

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The accuracy of water flow rate measurement with an ultrasonic flow meter (UFM) is affected by pipeline conditions. On water pipelines, there is often no the required length of direct section, required by the device passport or regulatory documents. Therefore, we conducted experiments using UFM to measure water flow rate in the zone of influence of non-direct sections of the water pipeline. The flow rate was measured in two planes of the pipeline with an offset of 90 o and the average value was taken. Thus, it was expected to take into account the average water velocity for the asymmetric velocity profile. The results of water flow rate measuring with UFM on short direct sections of the water pipeline, limited by pipeline bends sudden constriction of the pipeline, are presented. The greatest influence on the UFM measurement error is the 90 o pipeline bends.

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Reducing the additional error caused by the time‐difference method in transit‐time UFMs

Cited by 2 publications

References 14 publications

Standardized Judgment Method of Shooting Training Action Based on Digital Video Technology

Standardized Judgment Method of Shooting Training Action Based on Digital Video Technology

The Use of an Ultrasonic Flow Meter in the Zone of Influence of Indirect Sections of the Water Pipeline

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