Results 251 to 260 of about 14,331,564 (267)

[Application of star card in edge enhancement processing of pneumoconiosis DR image].

Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2018
Objective: The feasibility of applying DR card in the quality control of chest film of pneumoconiosis was discussed by using the image detail change of 1 degree star card. Methods: With different types of grid DR device for star card photography, to ensure that the grid bars are orthogonal to the direction of star card image quality is stable, conforms
W W, Li, H T, Qiao, H, Li, Z Q, Jiang, J Q, Chen   +4 more
openaire   +1 more source

On-chip image-processing algorithm for real-time CCD-based star trackers and wavefront sensors

Publications of the Astronomical Society of the Pacific, 1994
In this paper, we describe on-chip and off-chip image procesing algorithms utilizing the internal architect of recently developed CCD sensors to provide high speed readout of selected portions of the imager or accelerated scanning of an entire CCD frame.
openaire   +1 more source

A novel method incorporating digital image processing and A-star algorithm for soil-rock mixture (SRM) slope stability

Environmental Earth Sciences, 2023
Shiqi Liu, Zhichao Cheng, Xiao Qu
openaire   +1 more source

Processing of CCD images of star fields without the frame of a flat field by using new software in program shell of MIDAS/ROMAFOT

2015
Results of CCD frames of star fields processing obtained by two ways, are analyzed. In the first case (a traditional method) the frame of flat field are used. In the second one the own large-scale flat field is obtained directly from the processable frames of image. That is we suggest to find the frame of a flat field individually for each frame of the
Andruk, V.M., Vid'machenko, A.P., Ivashchenko, Yu.M.   +2 more
openaire   +1 more source

Infrared star image denoising using regions with deep reinforcement learning

Infrared Physics and Technology, 2021
Ming Xie, Zhenduo Zhang, Yuanhao Wu
exaly  

Motion-blurred star image restoration based on multi-frame superposition under high dynamic and long exposure conditions

Journal of Real-Time Image Processing, 2020
Yi-Yang He
exaly  

<title>Image Signal Processing In Sub-Pixel Accuracy Star Trackers</title>

SPIE Proceedings, 1980
Phil M. Salomon, Tom A. Glavich
openaire   +1 more source

<title>Method for three-axis attitude determination by image-processed star constellation matching</title>

SPIE Proceedings, 1997
Hartmut Renken, Hans J. Rath
openaire   +1 more source

<title>Design Of A Polaris Star Sensor Using Charge-Coupled Device (CCD) Imaging, And LSI And Microprocessor-Based Signal Processing</title>

SPIE Proceedings, 1979
Richard A. Brook, David J. Purll
openaire   +1 more source

The image stitching algorithm based on aggregated star groups

Signal, Image and Video Processing, 2018
Shi Qiu
exaly