Preprogrammed focusing of a micro-objective of an angle-measuring setup

In this study, an automatic pennation angle measuring approach based on deep learning is proposed. Firstly, the Local Radon Transform (LRT) is used to detect the superficial and deep aponeuroses on the ultrasound image. Secondly, a reference line are introduced between the deep and superficial aponeuroses to assist the detection of the orientation of muscle fibers. The Deep Residual Networks (Resnets) are used to judge the relative orientation of the reference line and muscle fibers. Then, reference line is revised until the line is parallel to the orientation of the muscle fibers. Finally, the pennation angle is obtained according to the direction of the detected aponeuroses and the muscle fibers. The angle detected by our proposed method differs by about 1° from the angle manually labeled. With a CPU, the average inference time for a single image of the muscle fibers with the proposed method is around 1.6 s, compared to 0.47 s for one of the image of a sequential image sequence. Experimental results show that the proposed method can achieve accurate and robust measurements of pennation angle.

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Intelligent Profile Measurement for Wide-Area Resist Surface Using Multi-Sensor AFM System

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.381-382.407 ◽

2008 ◽

Vol 381-382 ◽

pp. 407-410

Author(s):

Shu Jie Liu ◽

K. Watanabe ◽

Satoru Takahashi ◽

Kiyoshi Takamasu

Keyword(s):

Thin Film ◽

Semiconductor Industry ◽

Surface Profile ◽

Vertical Direction ◽

Profile Measurement ◽

Measuring Device ◽

Scanning Method ◽

Angle Measuring ◽

Experimental Apparatus ◽

Sensor Errors

In the semiconductor industry, a device that can measure the surface-profile of photoresist is needed. Since the photoresist surface is very smooth and deformable, the device is required to measure vertical direction with nanometer resolution and not to damage it at the measurement. We developed the apparatus using multi-cantilever and white light interferometer to measure the surface-profile of thin film. But, this system with scanning method suffers from the presence of moving stage and systematic sensor errors. So, in this paper, an error separation approach used coupled distance sensors, together with an autocollimator as an additional angle measuring device, was consulted the potentiality for self-calibration of multi-cantilever. Then, according to this method, we constructed the experimental apparatus and do the measurement on the resist film. The results demonstrated the feasibility that the constructed multi-ball-cantilever AFM system combined with an autocollimator could measure the thin film with high accuracy.

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Fabrication and characteristic evaluation of a rotary type SDA with a rotation angle measuring scale

10.1117/12.648844 ◽

2005 ◽

Author(s):

Shinya Nagao ◽

Fumikazu Oohira ◽

Takashi Matsui ◽

Maho Hosogi ◽

Gen Hashiguchi

Keyword(s):

Rotation Angle ◽

Angle Measuring ◽

Measuring Scale ◽

Rotary Type

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Linear CCD senso Lens r (102 ) Band pass filter 4 elements Laser range finder Angle measuring unit rJ La

Mechatronics in Engineering Design and Product Development ◽

10.1201/9781482289862-139 ◽

1998 ◽

pp. 567-568

Keyword(s):

Band Pass Filter ◽

Laser Range Finder ◽

Range Finder ◽

Pass Filter ◽

Laser Range ◽

Linear Ccd ◽

Angle Measuring ◽

Band Pass ◽

Measuring Unit

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High resolution rainfall – runoff measurement setup for green roof experiments in a tropical environment

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-7-9367-2010 ◽

2010 ◽

Vol 7 (6) ◽

pp. 9367-9410 ◽

Cited By ~ 2

Author(s):

T. Vergroesen ◽

U. Man Joshi ◽

N. C. van de Giesen ◽

F. H. M. van de Ven

Keyword(s):

High Resolution ◽

Green Roof ◽

Rain Gauge ◽

Tropical Environment ◽

Rainfall Runoff ◽

External Disturbances ◽

Data Treatment ◽

Measuring Setup

Abstract. This article describes the measurement setup that is used for green roof experiments in a tropical environment, the required data treatment to obtain reliable values of rainfall, runoff and evapotranspiration, and how to deal with external disturbances that can influence the experiment results. High resolution rainfall runoff measurements to identify, understand and properly model the relevant runoff processes in a green roof require both tailored equipment and data treatment. A tipping bucket rain gauge is calibrated for and installed to measure minute based rain intensities. A runoff measuring setup is developed that can accurately quantify the runoff up to 6 l/min, and has a high resolution in both time and volume. Two different measuring setups are used to verify the evapotranspiration that is derived from the rainfall and runoff measurements.

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Influence of the measurement configuration on the results of Raman microspectroscopy of human hair

Quantum Electronics ◽

10.1070/qel17973 ◽

2022 ◽

Vol 52 (1) ◽

pp. 36-41

Author(s):

N N Brandt ◽

E I Travkina ◽

E V Mikhal'chik ◽

A Yu Chikishev

Keyword(s):

Human Hair ◽

Optical Axis ◽

Spectroscopic Studies ◽

Original Method ◽

Raman Microspectroscopy ◽

Measuring Setup ◽

Experimental Facilities ◽

Accuracy Of Measurement ◽

Confocal Raman Microspectroscopy ◽

Chemical Influence

Abstract Increasing interest in spectroscopic studies of human hair raises the question about the accuracy of measurement of their spectra and requires optimisation of experimental facilities. An original method of obtaining transverse hair sections without using a microtome and chemical influence is proposed. The results obtained by confocal Raman microspectroscopy of human hair differently oriented with respect to the optical axis of the measuring setup are compared. It is shown that, in addition to expected changes in the spectra measured at different distances from the hair periphery in the direction to its centre, the spectra measured in the case of hair excitation perpendicular and parallel to its axis are also considerably different.

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