491 research outputs found
Application of Python-OpenCV to detect contour of shapes and colour of a real image
No full textAbstract: OpenCV-Python has found its use in various fields during the course of its development, especially in the shape and colour detection of an actual image. It is more reliable to make a better and faster decision. So, OpenCV and Python are increasingly finding their application in the shape and colour detection of the images. In this following work, we will focus on how to detect the shapes and colour of a binary image by using Python 3.8, OpenCV 4.5, and Numpy 1.19.3 resources. This research is investigated in two steps process. Firstly, the image has been processed to detect the various shapes and colors of an image's specific shape. Secondly, catching the colour of an actual image by using our model.
Keywords: OpenCV, Python, Numpy, Computer vision, shape and colour detection.
Title: Application of Python-OpenCV to detect contour of shapes and colour of a real image
Author: Mohammed Khalid Hossen, Sayed Mashequl Bari, Partho Protim Barman, Rana Roy, Pranajit Kumar Das
International Journal of Novel Research in Computer Science and Software Engineering
ISSN 2394-7314
Vol. 9, Issue 2, May 2022 - August 2022
Page No: 20-25
Novelty Journals
Website: www.noveltyjournals.com
Published Date: 24-May-2022
DOI: https://doi.org/10.5281/zenodo.6576264
Paper Download Link (Publisher Website):
https://www.noveltyjournals.com/upload/paper/Application%20of%20Python-24052022-3.pdfInternational Journal of Novel Research in Computer Science and Software Engineering, ISSN 2394-7314, Novelty Journals (Publisher), Website: www.noveltyjournals.co
Kudakrumia rangnekari Kumar & Lelej & Das & Raveendran & Loktionov 2019, sp. nov.
No full text<i>Kudakrumia rangnekari</i> Girish Kumar & Lelej, sp. nov. <p>(Figs. 1–10)</p> <p> <b>Type material.</b> Holotype ♂, mounted on card stock, <b>India</b>: Goa, South Goa district, Kotigao Wildlife Sanctuary (14°58’36’’N 74°12’22’’E, 108 m), 18.v.2018, Coll. P. Girish Kumar, ZSIK Regd. No. ZSI/ WGRC /IR/INV.12178. Paratype ♂, <b>India</b>: Kerala, Kasaragod district, Ranipuram Hill (12°24’56’’N 75°21’11’’E, 901 m), 21.i.2018, Coll. P.M. Rajan, ZSIK Regd. No. ZSI/ WGRC /IR/INV.12179.</p> <p> <b>Diagnosis</b>. Male. This new species is characterized by the following combination of characters: metasomal sternum 1 basally with distinct, long process (Fig. 1); metapleuron uniformly punctured, except median small smooth area (Fig. 5); propodeum punctate laterally (near metapleuron) (Fig. 5); propodeum strongly punctate without microsculptures (Fig. 5); parapenial lobe of basiparamere apically not modified, simple (Fig. 10). Female unknown.</p> <p> <b>Description</b>. Holotype male. Length: 3.28 mm. Body black but mandible except base, scape, pedicel and flagellum beneath brownish red; palpi, tegulae and legs testaceous except mesocoxa partially, metacoxa, apical half of mesofemur, metafemur almost entirely, meso- and metatibia except base, protarsomere 2–5, meso- and metatarsomere 1–5 black. Vestiture short and silvery, moderately dense and appressed on most of body, sparse erect setae also present between punctures. Wings hyaline, veins testaceous.</p> <p> <i>Head.</i> Sculpture dense, fine, at higher magnification polygonal in shape (Fig. 2); eye setae length about half frons setae length; apical clypeus margin not emarginated; mandible with three teeth; POL 0.605 × OOL; POL 1.619 × LOL; POL 2.44 diameter of posterior ocellus; scape (Fig. 3) 1.59 × as long as wide, inner lateral margin carinate, inner surface of flagellomeres 2–10 with few shorter, stouter setae.</p> <p> <i>Mesosoma</i>. Notauli almost touching anterior border of mesoscutum, parapsidal lines two-thirds of mesoscutum length, dorsum with slightly larger, more separated punctures, with microsculpture similar to that of head (Fig. 4); propodeum strongly punctate without microsculptures; metapleuron uniformly punctured, except median small area smooth. Forewing as in Fig. 6; basal part of medial vein of hindwing curved but not angulate (Fig. 7).</p> <p> <i>Metasoma</i>. First two metasomal terga with fine, subcontiguous punctures, with microsculpture almost similar to that of mesosomal dorsum, remaining terga with finer, slightly separated punctures (Fig. 8); sternum 1 basally with distinct long process (Fig. 1); second sternum with larger subcontiguous punctures, remaining sterna with small subcontiguous punctures (Fig. 9). Genitalia as in Fig. 10. Parapenial lobe of basiparamere apically not modified, simple.</p> <p>Female. Unknown.</p> <p> <b>Etymology</b>. The species is named after Mr. Parag Rangnekar, a well-known butterfly and dragonfly specialist from Goa who helped the first author to conduct a collection tour in Goa state during which the holotype was collected.</p> <p> <b>Distribution</b>. India: Goa, Kerala.</p> <p> <b>Remark</b>. The differences between the male of this new species and <i>Kudakrumia mirabilis</i> are given in the key below.</p>Published as part of <i>Kumar, Girish P., Lelej, Arkady S., Das, Dipanwita, Raveendran, Hanima K. P. & Loktionov, Valery M., 2019, Discovery of the genus Kudakrumia Krombein, 1979 (Hymenoptera: Mutillidae) in India and description of a new species, pp. 260-266 in Zootaxa 4612 (2)</i> on pages 261-264, DOI: 10.11646/zootaxa.4612.2.8, <a href="http://zenodo.org/record/3234350">http://zenodo.org/record/3234350</a>
Diabetic Retinopathy Classification: Performance Evaluation of Pre-trained Lightweight CNN using Imbalance Dataset
No full textDiabetic Retinopathy (DR) is an eye complication that arises from long-term diabetes and damages the retinal blood vessels. Various clinical studies claim that Diabetic retinopathy infects about eighty percent of patients who suffer from diabetes type 1 for the last 15 years and a hundred percent of patients with this disease for 20 years. The human evaluation method is challenging but useful because it can detect diseases by the presence of lesions associated with Diabetic Retinopathy in most cases, but it is also time-consuming, erroneous, and requires a sophisticated medical setup. An efficient and automatic Diabetic Retinopathy identification method is still a challenging task. The feature extraction part is a very significant part and plays a vital role in the automatic Diabetic Retinopathy identification system. CNN has demonstrated its efficiency in medical image classification tasks as compared to other neural networks and traditional image processing methods. In this study, two lightweight CNN models: MobileNet and MobileNetV2 are used via transfer learning for binary (2-class) and multiclass (5-class) Diabetic Retinopathy classification using the DDR dataset, which is highly imbalanced. The efficiency of the models is measured using accuracy, precision, recall, and F1-score values. The ROC curve is generated for both models in binary and multiclass classification. The MobileNet model performed slightly better than MobilenetV2 in Diabetic Retinopathy classification for binary and multiclass classification. MobileNet shows 80% and 71% accuracy whereas MobileNetV2 shows 79% and 69% in binary and multiclass classification, respectively
Article and Author Level Measurements
No full textArticle and author level measurements have been discussed in this Unit. Author and researcher identifiers are absolutely essential for searching databases in the WWW because a name like D Singh can harbour a number of names such as Dan Singh, Dhan Singh, Dhyan Singh, Darbara Singh, Daulat Singh, Durlabh Singh and more. The ResearcherID.com, launched by Thomson Reuters, is a web-based global registry of authors and researchers that individualises each and every name. Open Researcher and Contributor ID (ORCID) is also a registry that uniquely identifies an author or researcher. Both have been discussed in this Unit. Article Level Metrics (Altmetrics) has been treated in this Unit with the discussion as to how altmetrics can be measured with Altmetric.com and ImpactStory.org. Altmetrics for Online Journals has also been touched. There are a number of academic social networks of which ResearchGate.net, Academia.edu, GetCited.org, etc. have been discussed. Regional journal networks with bibliometric indicators are also in existence. Two networks of this type such as SciELO – Scientific Electronic Library Online, and Redalyc have been dealt with. This Unit discusses in details aspects such as Unique Identifiers for Authors and Researchers; Article Level Metrics (Altmetrics); Academic Social Networks; and Regional Journal Networks with Bibliometric Indicators
Redox-Responsive Nanocapsules for the Spatiotemporal Release of Miltefosine in Lysosome: Protection against Leishmania
No full textLeishmaniasis, a vector-borne disease, is caused by intracellular parasite Leishmania donovani. Unlike most intracellular pathogens, Leishmania donovani are lodged in parasitophorous vacuoles and replicate within the phagolysosomes in macrophages. Effective vaccines against this disease are still under development, while the efficacy of the available drugs is being questioned owing to the toxicity for nonspecific distribution in human physiology and the reported drug-resistance developed by Leishmania donovani. Thus, a stimuli-responsive nanocarrier that allows specific localization and release of the drug in the lysosome has been highly sought after for addressing two crucial issues, lower drug toxicity and a higher drug efficacy. We report here a unique lysosome targeting polymeric nanocapsules, formed via inverse mini-emulsion technique, for stimuli-responsive release of the drug miltefosine in the lysosome of macrophage RAW 264.7 cell line. A benign polymeric backbone, with a disulfide bonding susceptible to an oxidative cleavage, is utilized for the organelle-specific release of miltefosine. Oxidative rupture of the disulfide bond is induced by intracellular glutathione (GSH) as an endogenous stimulus. Such a stimuli-responsive release of the drug miltefosine in the lysosome of macrophage RAW 264.7 cell line over a few hours helped in achieving an improved drug efficacy by 200 times as compared to pure miltefosine. Such a drug formulation could contribute to a new line of treatment for leishmaniasis.A. Das acknowledges SERB (India) Grants (CRG/2020/000492 and JCB/2017/000004) and DBT Grant (BT/PR22251/NNT/28/1274/2017) for supporting this research. N. Mukherjee acknowledges SERB (India) Grant PDF/2016/001437 and K. Das acknowledges the grant EMR/2015/001674 for supporting this research. Financial support from DST (DST/INSPIRE/03/2017/002477) is acknowledged by R.T. This manuscript bears CSMCRI registration no 7/2021.Pramanik, SK (corresponding author), CSIR Cent Salt & Marine Chem Res Inst, Bhavnagar 364002, Gujarat, India.
Mukherjee, N (corresponding author), CSIR Indian Inst Chem Biol, Canc Biol & Inflammatory Disorder Div, Kolkata 700032, India.
Chattopadhy, S (corresponding author), BITS Pilani, Pilani 403726, Goa, India.
Das, A (corresponding author), Indian Inst Sci Educ & Res Kolkata, Mohanpur 741246, W Bengal, India.
[email protected]; [email protected]; [email protected]
Response surface based experimental analysis and thermal resistance model of a thermoelectric power generation system
No full textIn this work, a response surface analysis is carried out on an experimental setup of a combined two-phase flow thermosyphon and thermoelectric generator (TEG) system. Three-level Box-Behnken response surface method is adopted for the design of experiments, and analysis of variance is carried out to gauge the contribution of operating parameters on various performance parameters. Effects of operating parameters such as working pressure, filling ratio, evaporator length, and evaporator temperature are studied. The performance of the system itself is gauged concerning the maximum power obtained, open circuit voltage and short circuit current. With an increase in vacuum pressure and evaporator temperature, performance parameters are found to increase. However, performance parameters under the influence of filling ratio and evaporator length first decrease and then increase due to uneven variation in evaporation rate of working fluid. Experiments also reveal that the performance of the thermosyphon-assisted (TEG) system is mainly governed by pressure and evaporator temperature, whereas filling ratio and evaporator length have relatively lesser influence.Design and Development of a Solar Pond and Biomass Driven Thermoelectric Unit for Domestic Power Generation using Inverse Method from Science & Engineering Research Boar
Regulations Aware Motion Planning for Autonomous Surface Vessels in Urban Canals
No full textIn unstructured urban canals, regulation-aware interactions with other vessels are essential for collision avoidance and social compliance. In this paper, we propose a regulations aware motion planning framework for Autonomous Surface Vessels (ASVs) that accounts for dynamic and static obstacles. Our method builds upon local model predictive contouring control (LMPCC) to generate motion plans satisfying kino-dynamic and collision constraints in real-time while including regulation awareness. To incorporate regulations in the planning stage, we propose a cost function encouraging compliance with rules describing interactions with other vessels similar to COLlision avoidance REGulations at sea (COLREGs). These regulations are essential to make an ASV behave in a predictable and socially compliant manner with regard to other vessels. We compare the framework against baseline methods and show more effective regulation-compliant avoidance of moving obstacles with our motion planner. Additionally, we present experimental results in an outdoor environment.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Learning & Autonomous Contro
Inverse prediction and optimization analysis of a solar pond powering a thermoelectric generator
No full textA given temperature difference across the upper and the lower convective zone of a solar pond is commonly
sought in thermoelectric power generation. Based on this consideration, this work is aimed at predicting the
lengths of various zones of a solar pond to ensure a minimum temperature potential throughout the year be-
tween its upper and lower convective zones. For predicting the critical lengths of various zones of the solar pond,
at first, the heat energy conservation-based model available in the literature is modified by accounting the effect
of salinity and temperature on various thermal parameters. The model is satisfactorily-validated with similar
model and experimental data reported in the literature. Thereafter, considering the requirement of a thermo-
electric power generator (TEG), an inverse problem is solved with the aid of a genetic algorithm-based opti-
mization method to predict feasible lengths of various zones satisfying a minimum temperature potential across
TEG considering suitable thermal resistances. The present results reveal improved pond dimensions achieving a
better temperature profile at a lower total height than that available in the literature. Further, case studies of
diverse meteorological conditions of India are carried out and it becomes apparent that, around the year,
multiple combinations of convective and non-convective regions of the solar pond can ensure the required
minimum (or more) temperature difference across relevant zones of the solar pond. Finally, the present study
also reveals that the temperature of the upper convective zone is largely governed by the thickness of this zone,
whereas, the thickness of the non-convective zone is largely responsible for the temperature within the storage
zone. The present study provides a novel inverse methodology to predict and optimize the suitable dimensions of
various regions of a salt-gradient solar pond to ensure a minimum temperature potential across the year for
thermoelectric power generation.Science & Engineering Research Board (SERB
Journal of Informetrics: A Bibliometric Profile
No full textThis paper critically analyses 239 scholarly communications published in the inaugural five volumes of Journal of Informetrics (JOI) to examine growth of literature, types of communications, authorship pattern, collaboration trend, predominant research domains, etc. Subsequent analysis focuses on prolific contributors, degree of collaboration, and time-lag trend. Findings reveal that - publication output doubles over the study period as article publications increase considerably; though single-authored
contributions were significant (30 %), majority of contributions were collaborated by two-authors (36 %),
while average authorship accounts for 2.28 per communications. Degree of collaboration (DC) was
impressive (0.699) but not overwhelming as research collaborations has emanated from 199 higher learning institutions of 32 countries across the globe. Ranking of prolific contributors has shown Prof. Egghe on the top followed by L Bornmann; R Rousseau and L Leydesdoff. Result also shows upward trend of keyword usage with an average of 4.55 per items, of which h-index, citation analysis,
bibliometrics, g-index, etc, expectedly predominates. Scholarly nature of source journal has been further ascertained from increasing citations and reference usage trend. Moreover, growing hardness of the field has been attributed to JOI due to the increasing usage of tables and figures. Study also showed that the journal takes an average of about four month time to publish a manuscrip
Global trends in chemistry research and the challenge for Malaysian scientists: a perspective review
No full textMalaysia is currently poised to introduce its Science, Technology and Innovation (STI) Policy and Act to bolster the nation\u27s efforts at economic and social transformation. In championing this initiative, the Academy of Sciences Malaysia, while continuing to advise the Government on STI issues of the day, has made major strides in taking stock of the country\u27s STI strengths in the various sectors of the economy as well as weaknesses that need to be addressed in terms of human capital development. In this article, the author examines the level of research expertise presently in the country in the field of chemistry, and elaborates on the four key areas of energy, catalysis and chemical synthesis, materials science and biological chemistry which will be researched globally in the next few decades that we would also need to be engaged upon to remain competitive. Intended for a wider audience than chemists alone, the descriptive sections in the article by and large belie an interdisciplinary flavour. The article also advocates the need for a more thorough road mapping exercise of the STI efforts in chemistry across the spectrum of academia and industry and makes some recommendations towards forging strong collaborations in research between the universities, public research institutes and the industry which are seen as vital in providing cross-cutting chemical solutions throughout the value chains and to the success of technologies identified as critical to the nation
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