Improvement of Speckle Contrast Image Processing by an Efficient Algorithm

Abstract The article presents an algorithm for digital image processing of astronomical objects in order to effectively determine the position of these objects. The proposed method has been optimized due to its effectiveness of removing noise and distortion caused by atmospheric turbulence and imperfections in long exposure photography of astronomical objects. This solution is ready for implementation in a system for automatic identification of stars in the recorded images. Such a system is designed for GoTo circuits at telescope’s drives, which can automatically point a telescope to astronomical objects. The method was verified by simulation in MATLAB program on real images of astronomical objects.

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Application of laser speckle contrast image in the evaluation of arthritis animal model

10.1117/12.2004013 ◽

2013 ◽

Author(s):

Taeyoon Son ◽

Won Hyuk Jang ◽

Jihoon Park ◽

Hyung-Ju Yoon ◽

Jeon Lee ◽

...

Keyword(s):

Animal Model ◽

Laser Speckle ◽

Speckle Contrast ◽

Contrast Image

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Contrast Enhancement of Laser Speckle Contrast Image in Deep Vasculature by Reduction of Tissue Scattering

Journal of the Optical Society of Korea ◽

10.3807/josk.2013.17.1.086 ◽

2013 ◽

Vol 17 (1) ◽

pp. 86-90 ◽

Cited By ~ 13

Author(s):

Taeyoon Son ◽

Jonghwan Lee ◽

Byungjo Jung

Keyword(s):

Contrast Enhancement ◽

Laser Speckle ◽

Speckle Contrast ◽

Tissue Scattering ◽

Contrast Image

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Long-term observation of cultured cells by interference-reflection microscopy: near infrared illumination and Y-contrast image processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100102432 ◽

1988 ◽

Vol 46 ◽

pp. 70-71

Author(s):

M. S. Zand ◽

G. Albrecht-Buehler

Keyword(s):

Image Processing ◽

Near Infrared ◽

Cultured Cells ◽

Video Recording ◽

Time Lapse ◽

Live Cells ◽

3 Dimensional ◽

Long Term Observation ◽

Contrast Image

Analysis of dynamic changes in cell-substratum adhesion patterns during cell locomotion requires continuous, extended observation of single living cells. To date, interference-reflection microscopy (IRM) is the only method available to visualize cell -substratum adhesions in vitro. This method uses 1% of the incident illumination to produce an IRM image, and so far requires use of a high intensity visible light source (400 - 800 nm). However, light of this intensity and spectral range induces marked changes in fibroblast behavior, including cessation of locomotion. Therefore, we developed a method allowing continuous IRM observation of live cells for up to 8 hours, without any observable changes in normal cell behavior, using near infrared illumination (750-1100 nm). In addition, we use Y-contrast image processing of IRM images to create a 3-dimensional relief of the ventral cell surface.Single locomoting PTK1 cells were observed continuously in IRM with time lapse video recording for periods of up to 8 hours.

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