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Home > An Evolutionary Approach to Unsupervised Color Image Segmentation

An Evolutionary Approach to Unsupervised Color Image Segmentation

Thesis Info

Access Option

External Link

Author

Khan, Ahmad

Program

PhD

Institute

National University of Computer and Emerging Sciences

City

Islamabad

Province

Islamabad

Country

Pakistan

Thesis Completing Year

2014

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2877/1/Ahmad_Khan_Computer_Vision_2016_NUCES_HSR_E_29.12.2016.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727698958

Similar


The process to divide or partition a color image into a set of non- overlapping regions (segments) is called color image segmentation. Color image segmentation can be performed through clustering process by con- sidering the features of each pixel as a pattern and a set of pixels, having similar features or characteristics as a cluster ( segment). Generally, the effectiveness of a clustering algorithm depends on the number of clusters (should be known in advance), initialization of the search space and the searching behaviour of the algorithm. In this work, clustering based algorithms are proposed for color image segmentation which not only determine the number of clusters automat- ically, but also generate compact and well separated segments. First, a hybrid genetic algorithm, called Spatial Fuzzy Genetic Algorithm (SFGA) is proposed which incorporate the colour and spatial information to optimize the fuzzy separation and global compactness simultaneously. The Self Organizing Map (SOM) is adopted to find out the number of clusters (segments) automatically. To initialize the SOM network and SFGA to the productive regions, the dominant peaks in the color his- togram of the wavelet transform image are determined. The problem of over-segmentation is handled with a simple pruning technique. The second contribution is the incorporation of objective function i.e. the ratio of multiple cluster’s overlap to the fuzzy separation into genetic algorithm called Dynamic Genetic Algorithm (DGA). DGA is capable to adjust the number of clusters automatically. Finally, the segmenta- tion of color images are performed by Modified Adaptive Differential Evolution Algorithm (MoADE). MoADE has the ability to automat- ically adjust the crossover and mutation parameters according to the underlying distribution. Moreover to reduce the computational cost the MoADE is applied to the superpixel segmented image. An opposition based strategy is adopted to initialize the population to the productive areas in the search space. The effectiveness of the proposed approaches are tested on Berkeley Im- age Segmentation Database and Benchmark (BSD) with comprehen- sive quantitative and qualitative evaluations. The experimental results demonstrate that the proposed image segmentation methods perform better when applied to complex color images.
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مولانا غلام محمد نورگت

مولانا غلام محمد نورگت
گزشتہ ماہ ہندوستان کی مشہور دینی شخصیت حضرت مولانا غلام محمد نورگت کی وفات سے علمی ودینی حلقوں میں صفِ ماتم بچھ گئی۔ان کی اچانک وفات کی خبر ہندوستان ہی میں نہیں بلکہ تمام عالم اسلام میں رنج وغم کے ساتھ سنی گئی۔ اِنّالِلّٰہِ وَاِنَّااِلَیْہِ رَاجِعُوْن۔
ادارہ ندوۃ المصنفین سے مرحوم مولانا غلام محمد نورگت کاتعلق ورابطہ اس کے قیام اول ہی سے تھا۔وہ اس کے نہ صرف لائف ممبر ورکن تھے بلکہ اس کے بانی اورعالم اسلام کی زبردست ہستی مفکرِ ملّت حضرت مفتی عتیق الرحمن عثمانی ؒ کے خصوصی رفقاء میں تھے۔حضرت مفتی صاحبؒ کے مشوروں وہدایات کے تحت انہوں نے اپنے آبائی وطن گجرات سورت اوراس کے مضافات میں اسلامیات کے فروغ اور مذہبی ودینی تعلیمات کے لیے دینی مدرسوں کے قیام میں بڑھ چڑھ کرحصہ لیا۔کتنے ہی مدارس انہوں نے قائم کیے اور ان کاسنگ بنیاد حضرت قبلہ مفتی عتیق الرحمن عثمانیؒ کے دستِ مبارک سے رکھوایا۔ علمی ودینی کاموں کوانجام دینے اورانہیں پایۂ تکمیل تک پہنچانے کے لیے حضرت مفتی صاحبؒ سے برابر صلاح ومشورہ لیتے رہتے، قدم قدم پرمفتی صاحبؒ کی رہنمائی سے استفادہ حاصل کرتے رہتے تھے۔حضرت مفتی صاحبؒ سے حضرت مولانا غلام محمد نورگتؒ کے اس قدر تعلق خصوصی اوران کی بے لوث دینی خدمات سے متاثر ہوکر مشہور علمی و دینی شخصیت حضرت مولانا ابوالحسن علی ندوی مدظلہ العالی دامت برکاتہم نے اپنی تصنیف ’حیات عبدالحئیؒ ‘میں خاص طور پراسے بیان فرمایا ہے۔ مفتی صاحبؒ کو وہ اپنا مشفق و مہربان اور بڑے بھائی کی طرح سمجھتے تھے، ان کی ہربات ماننا وہ باعث سعادت سمجھتے تھے۔حضرت مفتی صاحبؒ کی وفات کی خبرسن کر پھوٹ پھوٹ کر بچوں کی طرح رونے لگے،اس کے بعد جب بھی حضرت مفتی صاحبؒ کاکہیں ذکر ہوتاتو ان کی یاد کرتے کرتے ان کی آنکھوں سے آنسو چھلک...

Analysis of Quarantine Service Quality on Ship Crew Satisfaction during the Covid-19 Pandemic at Belawan Sea Port

This study aims to analyze the quality of quarantine services on ship crew satisfaction during the Covid-19 pandemic at the Belawan Sea port. This study is a quantitative study with a cross sectional method which aims to analyze the quality of quarantine services on satisfaction during the COVID-19 pandemic at the Belawan Sea Port using the ServQual approach which consists of physical evidence, reliability, responsiveness, assurance, and empathy. The results of the study are expected to provide input regarding the quality of quarantine services provided by the Class I Medan KKP to ship crews during the COVID-19 pandemic. Based on the ServQual analysis, the results show that the satisfaction of the crew of the quarantine service at Belawan Port is very satisfying with a suitability level of 107.56% (the average service / reality score is 4.00 and the expectation score is 3.72). It is suggested to improve coordination and more intensive advocacy with shipping agents as intermediaries between officers and skippers as crew so as to reduce the length of service waiting time, in order to increase the number of human resources carrying out document checks on board, involving female medical officers for health checks The crew who came from affected countries/ports to facilitate information retrieval, ordered the boarding officers to bring Personal Protective Equipment when interacting with the crew.

Studies on Intercropping of Sugarbeet Beta Vulgaris L. With Sugarcane Saccharum Officinarun L. by Different Management Practices

Keeping in view the low fertilizer, less organic matter in soil and small holdings for sugarcane-sugar beet in Pakistan, the present research work was started at the Agricultural Research Institute, Dera Ismail Khan during 2009-10 and 2010-11 to make available a possible pack up of reserve management technology to sugarcane and sugar beet farmers under dry region. Three experiments were laid out in a randomized complete block design with factorial arrangement and four replications. The treatment size was 4.5 m x 5 m (22.5 m2). Approved sugarcane varity “HSF-240” and sugar beet varity “Antak” was used in all experiments.In first experiment, six NPK doses F0 (0-0-0), F1 (100-100-100), F2 (150-150- 150), F3 (200-200-200), F4 (250-250-250), and F5 (300-300-300) NPK kg ha-1 and sugar beet was intercropped in sugarcane with 90 cm spaced row. In second experiment, manures @ 10 t ha-1(farm yard manure, press mud, compost) in combination with NPK 100-100-100 and 250-250-250 NPK kg ha-1. Sugar beet was intercropped in sugarcane with 90 cm spaced row. In third experiment, three planting geometries 75 cm spaced single row strips, 30/90 cm row strips, 30/120 cm row strips and sugar beet intercrop in sugarcane were practiced. Data were recorded on various growth and yield parameters like germination (%), millable cane (m-2), individual cane weight (kg), sugar recovery (%), stirpcane yield, and sugar yield of sugarcane, whereas, beet germination (%), number of beets (m-2), individual beet weight (kg), beet sugar recovery (%), and beet sugar yield (t ha-1) were recorded in sugar beet, benefit cost ratio (BCR), in all experiments. In first trial the highest benefit cost ratio (BCR) and land equivalent ratio were obtained from the combination of NPK application @ 250: 250:250 NPK kg ha-1, when sugar beet was intercropped in sugarcane. In second trial, maximum economic benefit was obtained with FYM + 250:250:250 NPK kg ha-1, in sugarcane intercropped with sugarbeet. In the third trial maximum economic benefit was obtained fromplanting geometry of 30/90 cm row strips when sugar beet was intercropped in sugarcane. It is concluded that sugarcane growers of arid areas can get maximum return when sugarcane is planted in 30/90 cm spaced paired row strips with FYM 10 tons ha-1 and 250:250:250 NPK kg ha-1 in sugarcane intercropped with sugarbeet. Better water and fertilizer use efficiency of autumn sugarcane on above mentioned soils was noted due to enhanced light interception. Cultural operations in standing crop like irrigation, fertilization, weeding, hoeing, earthing up and foliar spray of pesticides are easily carried out as ample interstrip space was available. Minimum lodging was observed due to availability of adequate space among the paired row strips.