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Recognizing Human Actions in Realistic and Complex Scenarios Using Bag of Expression Boe Model

Thesis Info

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Author

Nazir, Saima

Program

PhD

Institute

University of Engineering and Technology

City

Taxila

Province

Punjab

Country

Pakistan

Thesis Completing Year

2019

Thesis Completion Status

Completed

Subject

Software Engineering

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10527/1/Saima%20Nazir_SE_2019_UET%20Taxila_PRR.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727819681

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Human action recognition (HAR) has emerged as a core research domain for video understanding and analysis, thus attracting many researchers. Although signi cant results have been achieved in simple scenarios, HAR is still a challenging task due to issues associated with view independence, occlusion and inter-class variation observed in realistic scenarios. In previous research e orts, the classical Bag of Words (BoW) approach, along with its variations, has been widely used. In this dissertation, we propose a novel feature representation approach for action representation in complex and realistic scenarios. We also present an approach to handle the inter and intraclass variation challenge present in human action recognition. The primary focus of this research is to enhance the existing strengths of the BoW approach like view independence, scale invariance and occlusion handling. The proposed Bag of Expressions (BoE) includes an independent pair of neighbors for building expressions; therefore it is tolerant to occlusion and capable of handling view independence up to some extent in realistic scenarios. We apply a class-speci c visual words extraction approach for establishing a relationship between these extracted visual words in both space and time dimensions. To improve classical BoW, we propose a Dynamic Spatio-Temporal Bag of Expressions (D-STBoE) model for human action recognition without compromising the strengths of the classical bag of visual words approach. Expressions are formed based on the density of a spatiotemporal cube of a visual word. To handle inter-class variation, we use class-speci c visual word representation for visual expressions generation. The formation of visual expressions is based on the density of spatiotemporal cube built around each visual word, as constructing neighborhoods with axed number of neighbors would include non-relevant information hence making a visual expression less discriminative in scenarios with occlusion and changing viewpoints. Thus, the proposed approach makes our model more robust to occlusion and changing viewpoint challenges present in realistic scenarios. Comprehensive experiments on publicly available datasets show that the proposed approach outperforms existing state-of-the-art human action recognition approaches.
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روٹی سمجھ چنگیر والی چن ہو گئی

روٹی سمجھ چنگیر والی چن ہو گئی
تھگڑی سو جو نال بدن ہو گئی

لگا عشق میں رن پرنا آندی
اگوں بالاں دی ادھی درجن ہو گئی

پردہ مکھ توں الٹیا جس ویلے
جھلک چودھویں دا ہک چن ہپو گئی

یونیورسٹی دی کڑی پرنا آندی
مکلاوا آندیاں سار ان بن ہو گئی

ترلے کرنا ایں کیوں وڈیریاں دے
ایڈی وڈی کہیڑی تینوں بھن ہو گئی

روندا آیا ایں تے روندا ٹر جاسیں
دنیا کتھوں ایہہ تیری سجن ہو گئی

بیوی لڑدی رہندی سی نال میرے
دتا خرچہ تے اوہ مکھن ہو گئی

پایا سوہنیاں نے صرف اک پھیرا
رونق ویکھ وچ کیویں چمن ہو گئی

دنیا مال نہ دولت کم کسے
دولت عمل دی نال کفن ہو گئی

والضحیٰ چہرہ والیل زلفاں
رحم دلی وی سنگ بدن ہو گئی

پنجابی لکھنا بولنا گھٹ ہویا
لگ دا پیا اے بے وطن ہو گئی

بچہ اپنا ہی سوہنا لگ دا اے
لگے سوہنی پرائی جو رن ہو گئی

تناں شئیاں توں اصل وچ ھین جھگڑے
زر، زمین تے تیسری زن ہو گئی

Challenges for Indian Entry into Organisation of Islamic Countries (OIC)

Enough of humiliation and what India calls as defaming by the resolutions by OIC on Kashmir, India has dealt with the challenges it had to face to enter into OIC. The tale of challenges faced by India, and the reciprocal attitude of New Delhi is a concrete depiction of international politics based on national interests, and where International organizations voice for human rights but get overpowered by individual member’s national interests. This piece of paper encompasses a show of challenges what India had to face, could overcome them and how creating challenges for its rivals.

Analysis of Constraints to the Growth of Small and Medium Enterprises: A Study of Smes in Sindh and Punjab

It has been empirically evidenced and hence widely acknowledged that SMEs play a major and active role in economic growth, social development, employment generation and poverty reduction. The developing countries like Pakistan have been facing various macro problems such as low and unsustainable economic growth, unemployment, and poverty. SMEs can be used as a panacea for resolving a nation''s macroeconomic issues. SMEs have a great capacity to produce jobs which would reduce the problem of unemployment. In Pakistan, labor force has been continuously growing and it can only be tackled through the promotion of an active SME sector. SMEs have also been providing impetus to the growth of developed economies. The entrepreneurial spirit in the developed countries has been created, nourished, and sustained through the development of the SME sector. The dynamic SME sector is essential for creating employment, generating foreign exchanges, advancing the quality of labor force, upgrading business management skills, and disseminating technological know-how across Pakistan. The study also evidenced that Pakistan has plenty of unutilized domestic resources that can be productively mobilized through the involvement of the SMEs sector. This study is aimed at identifying the factors which are associated with the growth of SMEs and to measure the impact of those factors on constraining the pace of their growth. In total thirty-one (31) constraint-items were identified which were hampering the growth of SMEs in Pakistan. Through literature review and application of exploratory factor analysis these 31 constraint-items were grouped into seven categories (i.e. financial constraints with seven items, market constraints with five items, government regulation constraints with three items, infrastructure constraints with three items, mode of communication constraints with four items, technological constraints with four items and economic constraints with five items).Of the seven constraints categories, the technological constraints have been found to be the most severely influencing the growth of sampled SMEs in Pakistan. This is followed by the market and economic constraints which have also been severely impairing the growth of SMEs. The least important category with respect to its severity was found to be financial constraints. The infrastructure and mode of communication constraint categories have been moderately influencing the growth of SMEs. The study further demonstrated three interaction variables and testified their impact on each of the seven constructs. The first moderator''s (Firm''s Size) impact was found significant with three constructs (i.e.-economic, government regulations and mode of communication constraints); the second construct Firm''s Location was found statistically influencing three constructs (finance, government regulations, economic constraints); and the third construct Firm''s Age was found significant in the relationship between SME growth and two constructs (finance and government regulations constraints). It is recommended that the government of Pakistan has to launch more programs to support SMEs. SMEs, which are characterized as innovative and are technology-based, need government support in building and enhancing their capacity to adopt emerging technological advancements. Further government has to create a conducive and enabling environment in which SMEs can establish themselves and thrive competitively. The government has to intensify its efforts in reducing uncertainties and anomalies in the regulatory, tax, and macro-economic environment. The government needs to reform its policies with respect to financing, business environment, technology, and access to the market. Under the financing policy, the government has to provide traditional loans and venture capital to support the growth investments of SMEs. In the business environment, the government has to scrutinize the business laws and regulations carefully and systematically in order to ensure they should not put a disproportionate burden on SMEs in comparison to large businesses. The government also has to remove the red tape and other bureaucratic hurdles. In the sphere of technology, the government should launch initiatives to enhance the innovative capacity of SMEs. In the organizational internal capability context, the government has to enhance the quality of managerial competence of managers working in SMEs. The government also has to facilitate SMEs in human resource procurement. In access to markets, the government has to develop programs and aim at giving access to SMEs on international markets. The findings of this study will add and update the existing literature on the constraints SMEs face in Pakistan. Secondly, the specific findings of this study would further stimulate the research studies on this important area which has great socio-economic implications at local, regional, national, and international levels. Thirdly, the findings would greatly help the managers of SMEs to understand the severity of constraints which enable them to formulate practical strategies in order to mitigate those constraints. 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