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0. Complete issue
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1. Features of Indian paper currency and its validation
- Pages: 5-14
- Sonia Sarkar, Arun Kiran Pal
- Abstract | Download | View
Abstract
In this paper the different salient features of the old and new version of Indian paper currency notes have been studied and compared. The list of security features of Indian currencies have been mentioned and discussed. Various kinds of conventional methods that are used to detect
authenticity and to recognize a note has been explained. It has been
observed that each technique has its own objective and significance.
There are many conventional tools that can be used to recognize different
features of a note. To classify different techniques, the detection method
comprises of two parts i.e., the first line detection method and the second
line detection method. Physical dimensions of a paper note along with
its thickness have pointed out a new parameter which is the diagonal of
a genuine currency note that has been calculated to obtain a proposed
standardization and each value differs from different denominations.
The classification of different Indian banknotes giving emphasis on its
characteristics, both salient and security features, dimensions and detection
methods has been mentioned and briefly explained. For validation of
the paper currencies two methods have been discussed emphasizing on
fuzzy logic framework by taking into consideration a 3-point likert scale
and another validation methodology using digital image processing.
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2. Showthrough and Strikethrough print defect detection using histogram equalization based computer vision method
- Pages: 15-21
- Jayeeta Saha, Shilpi Naskar, Sayanti Maiti
- Abstract | Download | View
Abstract
This paper presents a comparatively simple approach for showthrough
and strikethrough print defect detection using computer vision method.
Showthrough and strikethrough are common printing problem and are
typically functions of a paper’s opacity. Under normal lighting condition
the visibility of printing on the reverse side of printed paper is termed as
showthrough whereas the penetration of ink to the other side is termed as
strikethrough. Moreover the intensity of showthrough pixel is extremely low
thus it is difficult to identify the showthrough pixel from the printed area.
On the other hand strikethrough is the result of penetration of ink through
paper and depends on the absorbent nature of paper. Comparatively the
intensity of the strikethrough pixel is higher than that of the showthrough
but due to similar intensity of the ink of the printed pixel and strikethrough
pixel, both overlapped with each other in the foreground of the image. These
print defects can degrade the image quality as well as print production. In
this study, the detection of these two print defects achieved using histogram
equalization technique, to enhance the contrast between foreground and
back ground pixels. A global thresholding algorithm was applied on a histogram
equalized image to segment the printed area from the background
of the image. Pixels in the background which are considered as showthrough
and strike through pixels are identified by image subtraction. The pictorial
representations of the results show the remarkable potential of the proposed
technique which can be possible alternative of present subjective measures
of showthrough and strikethrough.
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3. Bookplate in the context of Ukrainian printmaking at the turn of the XX and XXI centuries: Typological aspect
- Pages: 23-29
- Julia Romanenkova, Ivan Bratus, Nina Araya Berrios
- Abstract | Download | View
Abstract
The article is dedicated to the examination of the bookplate of modern
Ukraine, which starting from the 1990s entered the state of its revival and
flourishing. A version of the bookplate typology, formed on the basis of
pictorial motifs as the main classification criteria is proposed, while typologically
bookplate is usually divided into groups based on the scope of use or
the technique for creating graphic sheets. The reasons for the actualization
of bookplate as a type of engraving at the turn of the 20th and 21st centuries,
the factors that influenced its popularization outside the country, and
the transformation of the functions of bookplate are considered. The role
of collecting as one of the most powerful stimuli for the popularization of
bookplate in the modern world of graphic arts is emphasized; the leading
centers for the development of the bookplate in Ukraine at the beginning
of the 21st century and the technique preferred by artists are indicated.
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4. MTC: Visualization method of assessing physical movements with dribbling performance of basketball based in 3D Space
- Pages: 31-40
- Mengru Liu, Newman Lau, Kelly Tang
- Abstract | Download | View
Abstract
We present a basketball training visualization method – Motion
Time Cylinder (MTC) designed to help novice players learn basketball
techniques more easily. The basketball player can select their preferred
movement to learn and visualize the body and joint movements in detail.
Extensive visualization as a graphical assistant help supports the player
in understanding 3D movements from the visual patterns. At the same
time, players can understand the coordination and spatial relationship
when playing the movement. The visualization principle is based on the
mapping of body movement into the graphic of clock-based division
locations. The movements can then be represented by the translation
pattern between the frontal and transverse planes of cylinder spaces. As a
result, the movement can be visualized by rendering the translation pattern
base on the clock from a specific perspective, for example, an orthogonal
view. This paper explains the visualization principles of the mapping and
pattern as well as the graphical representation based on user perception.
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