Application of image processing for spray angle measurement of furnace oil gun nozzle

2012 ◽  
Author(s):  
P. P. Gangal ◽  
V. R. Satpute ◽  
K. D. Kulat ◽  
A. G. Keskar
Keyword(s):  
Image Processing ◽  
Angle Measurement ◽  
Spray Angle

scholarly journals Precise levelling in crossing river over 5 km using total station and GNSS

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
DingLiang Yang ◽  
JinGui Zou
Keyword(s):  
Image Processing ◽  
Processing Technique ◽  
Angle Measurement ◽  
Second Order ◽  
Image Processing Technique ◽  
Long Distance ◽  
River Bank ◽  
Total Station ◽  
Pixel Image ◽  
Reciprocal Method

AbstractThe trigonometric levelling using the simultaneous reciprocal method has been proved to meet the precision of second order levelling. But this method is invalid once the distance of river crossing is beyond 3.5 km due to the difficulty of target recognition at such a long distance. To expand the available range of this method, this paper focuses on solving the target aiming and distance observation over a long distance. A modular LED 5-prism (modified Leica GPR1 reflector) as an illuminated target instead of the common prism is introduced, and we adopt the sub-pixel image processing technique to recognize the center of the target image pictured by image assisted total station (Leica Nova TM50 I equipped with a coaxial camera). Based on the principle of precise trigonometric levelling, this paper utilizes two image assisted total stations using image processing technique to perform simultaneous reciprocal for zenith angle measurement and GNSS static measurement for slope distance measurement to determine the height difference of either river bank. And long-distance precise river-crossing levelling can be realized based on the mentioned above. Besides, it is successful to apply in the experiment of Fuzhou Bridge spanning 6.3 km in China. The result shows the standard deviation is ± 0.76 mm/km that is compatible with the precision of second order levelling has.

scholarly journals Design and construction of the pressure swirl nozzle and experimental investigation of spray characteristics

2019 ◽  
Vol 13 (3) ◽  
pp. 204-212
Author(s):  
Seyed Hadi Seyedin ◽  
Majid Ahmadi ◽  
Seyed Vahid Seyedin
Keyword(s):  
Image Processing ◽  
Digital Camera ◽  
Air Pressure ◽  
Spray Angle ◽  
Orifice Diameter ◽  
Measuring Time ◽  
Total Measuring Time ◽  
Liquid Atomization ◽  
And Performance ◽  
Pressure Swirl

This paper focuses on the structure and performance of the pressure swirl nozzle and the study of liquid atomization. In this study, the atomizer has been designed and some experiments have been performed on it. Since image processing is an efficient method for measuring the size of the droplet and since it considerably reduces the total measuring time and eliminates the subjective observer’s error in sizing and counting spray drops, a digital camera has been used for capturing images and image processing has been done by the MATLAB software. The results show that by increasing the atomization air pressure, the spray angle increases and the droplet’s size decreases. It is concluded that the spray angle is a function of the atomization air pressure and orifice diameter. Moreover, when the distance from the spray centre line increases, the droplet’s average velocity decreases.

Quantitative Chamber Angle Measurement Utilizing Image-Processing Techniques

1990 ◽  
Vol 22 (1) ◽  
pp. 81-84 ◽  
Author(s):  
Takashi Shibata ◽  
Kazuyuki Sasaki ◽  
Yasuo Sakamoto ◽  
Nobuo Takahashi
Keyword(s):  
Image Processing ◽  
Angle Measurement ◽  
Image Processing Techniques ◽  
Processing Techniques ◽  
Chamber Angle

scholarly journals Investigation of Spray Angle Measurement Techniques

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 22276-22289 ◽  
Author(s):  
Irene Ruiz-Rodriguez ◽  
Radboud Pos ◽  
Thanos Megaritis ◽  
Lionel Christopher Ganippa
Keyword(s):  
Measurement Techniques ◽  
Angle Measurement ◽  
Spray Angle

An Angle Measurement of Hard Disk's Head in the HSA Using Image Processing

2009 ◽  
Author(s):  
Dongjin Fu ◽  
Montri Karnjanadecha ◽  
Anant Choksuriwong
Keyword(s):  
Image Processing ◽  
Angle Measurement

The Research on Assembly Angle Measurement of Cylinder Rod Located at ICF Target

2011 ◽  
Vol 66-68 ◽  
pp. 250-254
Author(s):  
Xiao Jie Xu ◽  
Xi Yan Dong
Keyword(s):  
Image Processing ◽  
Projection Method ◽  
Inertial Confinement Fusion ◽  
Ccd Camera ◽  
Angle Measurement ◽  
Image Processing Technique ◽  
Inertial Confinement ◽  
Laser Target ◽  
Positioning Precision ◽  
Measuring Machine

Aiming at the installation angle measuring requirement of cylinder rod located at some kind of laser target for inertial confinement fusion, a non-contact five-coordinate measuring machine is exploited and built. According to the projection characteristic of spatial line, the mathematical model of spatial angle between the cylinder rod and support rod is established. Combining with image processing technique, the angle measurement issue between spatial lines can be dexterously transformed into the plane image processing problem. Based on this projection method, the direction vector of cylinder rod centerline can be obtained by testing the cylinder rod from two perpendicular directions with CCD camera. LOG operator is applied to detect the edge of image, which is able to reach single-pixel positioning precision. Furthermore, the application of sub-pixel detecting method based on least squares linear regression can further improve the positioning precision of image edge. The experiments illustrate the measuring accuracy of angle can reach 0.1 degree with the projection method.

Some comments about observations and image processing of comet 29P/Schwassmann-Wachmann 1

1999 ◽  
Vol 173 ◽  
pp. 243-248
Author(s):  
D. Kubáček ◽  
A. Galád ◽  
A. Pravda
Keyword(s):  
Image Processing ◽  
Large Scale ◽  
Harvard College ◽  
Oak Ridge ◽  
Large Scale Structures ◽  
Short Period Comet ◽  
Short Period ◽  
Scale Structures ◽  
Harvard College Observatory ◽  
Period Comet

AbstractUnusual short-period comet 29P/Schwassmann-Wachmann 1 inspired many observers to explain its unpredictable outbursts. In this paper large scale structures and features from the inner part of the coma in time periods around outbursts are studied. CCD images were taken at Whipple Observatory, Mt. Hopkins, in 1989 and at Astronomical Observatory, Modra, from 1995 to 1998. Photographic plates of the comet were taken at Harvard College Observatory, Oak Ridge, from 1974 to 1982. The latter were digitized at first to apply the same techniques of image processing for optimizing the visibility of features in the coma during outbursts. Outbursts and coma structures show various shapes.

Analysis of the 9th November 1990 flare

2000 ◽  
Vol 179 ◽  
pp. 229-232
Author(s):  
Anita Joshi ◽  
Wahab Uddin
Keyword(s):  
Image Processing ◽  
Two Dimensional ◽  
Temporal Behaviour ◽  
Contour Maps ◽  
Dimensional Measurements ◽  
Processing Software ◽  
Image Processing Software

AbstractIn this paper we present complete two-dimensional measurements of the observed brightness of the 9th November 1990Hαflare, using a PDS microdensitometer scanner and image processing software MIDAS. The resulting isophotal contour maps, were used to describe morphological-cum-temporal behaviour of the flare and also the kernels of the flare. Correlation of theHαflare with SXR and MW radiations were also studied.

Sign in / Sign up

Export Citation Format

Share Document