scholarly journals Rendering Self and Microagressions Visible Through the Shadow Image

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Kim Snepvangers
Keyword(s):  
Shadow Image

scholarly journals A n-out-of-n Sharing Digital Image Scheme by Using Color Palette

Electronics ◽  
2019 ◽  
Vol 8 (7) ◽  
pp. 802
Author(s):  
Ching-Nung Yang ◽  
Qin-Dong Sun ◽  
Yan-Xiao Liu ◽  
Ci-Ming Wu
Keyword(s):  
Digital Image ◽  
Shadow Image ◽  
Cover Image ◽  
Secret Message ◽  
Secret Image Sharing ◽  
Color Palette ◽  
Secret Image ◽  
Image Sharing

A secret image sharing (SIS) scheme inserts a secret message into shadow images in a way that if shadow images are combined in a specific way, the secret image can be recovered. A 2-out-of-2 sharing digital image scheme (SDIS) adopts a color palette to share a digital color secret image into two shadow images, and the secret image can be recovered from two shadow images, while any one shadow image has no information about the secret image. This 2-out-of-2 SDIS may keep the shadow size small because by using a color palette, and thus has advantage of reducing storage. However, the previous works on SDIS are just 2-out-of-2 scheme and have limited functions. In this paper, we take the lead to study a general n-out-of-n SDIS which can be applied on more than two shadow. The proposed SDIS is implemented on the basis of 2-out-of-2 SDIS. Our main contribution has the higher contrast of binary meaningful shadow and the larger region in color shadows revealing cover image when compared with previous 2-out-of-2 SDISs. Meanwhile, our SDIS is resistant to colluder attack.

Errors of the shadow image of a lying drop of melt caused by the divergence of illuminating rays

2000 ◽  
Vol 36 (3) ◽  
pp. 401-405
Author(s):  
O. V. Lychak ◽  
S. A. Nechyporuk ◽  
V. M. Pidzharyi
Keyword(s):  
Shadow Image

A shadow image microscope based on an array of nanoLEDs

2020 ◽  
Author(s):  
Joan Canals ◽  
Victor Moro ◽  
Nil Franch ◽  
Sergio Moreno ◽  
Oscar Alonso ◽  
...  
Keyword(s):  
Shadow Image

A Radiographic Technique to Identify Healthy, Parasitized, and Diseased Sawfly Prepupae Within Cocoons

1958 ◽  
Vol 90 (1) ◽  
pp. 59-61 ◽  
Author(s):  
C. S. Holling
Keyword(s):  
Wave Length ◽  
Shadow Image ◽  
Low Density ◽  
X Rays ◽  
Fine Grain ◽  
Radiographic Technique

Many entomological problems require the identification and observation of insects without disturbing their surroundings. Such problems are usually concerned with insects within host or pupal coverings and radiography is a method well suited to their solution. The technique is a special type of radiography in which soft X-rays (wave length longer than about 0.25A), passing through an object of low density, produce a shadow image on fine-grain film in contact with the object.

Shadow images for in-line holography in STEM

1992 ◽  
Vol 50 (1) ◽  
pp. 142-143
Author(s):  
Shi-Yao Wang ◽  
J. K. Weiss ◽  
J. M. Cowley
Keyword(s):  
Field Emission ◽  
Relative Phase ◽  
Spherical Aberration ◽  
Shadow Image ◽  
Objective Lens ◽  
Interference Effects ◽  
Detector Plane ◽  
Diffraction Plane ◽  
Original Scheme ◽  
Thin Crystal

Shadow images are obtained on the detector plane when the specimen in a STEM instrument is illuminated by a stationary beam formed with a very large or no objective aperture. It has been recognized for some time that the shadow image formed after a thin crystal specimen in the diffraction plane of a STEM instrument with a field emission gun can be treated as an in-line hologram. Since the transmitted and diffracted beams are added to give interference effects, all the information on the relative phase of the scattered beams is recorded in the shadow image. In fact, this is basically equivalent to the original scheme envisioned by Gabor, where he proposed that a reconstruction could be made from a hologram so that the imperfection due to spherical aberration of the objective lens could be corrected and improved resolution could be achieved.

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