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Forgery Detection in Digital Images Using Computational Intelligence

Thesis Info

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Author

Mahmood, Toqeer

Program

PhD

Institute

University of Engineering and Technology

City

Taxila

Province

Punjab

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Computer Science

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10290/1/Toqeer_Mahmood_Computer_Engineering_HSR_UET_Taxila_15.06.2017.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727759530

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Due to availability of powerful image editing tools images are open to several manipulations. Therefore, their authenticity is becoming questionable especially when images have influential power, for example in a court of law, news reports, insurance claims, criminal investigation, medical imaging etc. The most common image tampering often for malicious purposes is to copy a region and paste to hide some other region of the same image is known as copy-move forgery (CMF). As both regions usually have same texture properties, therefore, this artifact is invisible for the viewers and credibility of the image becomes questionable in proof centered applications. Hence, means are required to validate the integrity of the image and identify the tampered regions. Image forensic techniques determine the integrity of the images by applying various high-tech mechanisms developed in the literature. In this dissertation, three techniques for copy-move forgery detection (CMFD) are presented to verify the truthfulness of image contents. Thus, for efficient detection of CMF, the first approach that we have presented exploits local binary pattern variance (LBPV) over the low approximation components of the stationary wavelets. The proposed CMFD method is applied over the circular regions to address the possible post-processing operations in a better way. The proposed method is evaluated on CoMoFoD (Copy Move Forgery Detection) and KLTCI (kodak lossless true color image) datasets in the presence of translation, flipping, blurring, rotation, scaling, color reduction, brightness change and multiple forged regions in an image. Our second method, presents an algorithm that utilizes stationary wavelet transform (SWT). The method exploits low approximation sub-band for forgery detection. The algorithm divides the low approximation sub-band into the small overlapping square blocks. A reduced feature vector representation is achieved by dividing each block into four triangles. The experimental results demonstrate that the algorithm is capable of detecting duplicated blocks precisely and identify multiple CMF effectively, even when the images are contaminated by blurring and noise. In our third method of CMFD, images are first divided into overlapping square blocks and DCT components are adopted as the block representations. Due to the high dimensional nature of the feature space, Gaussian radial basis function (RBF) kernel principal component analysis (PCA) is applied to achieve the reduced dimensional feature vector representation that also improved the efficiency during the feature matching step. Extensive experiments are performed on DVMM image forensic dataset and google images to evaluate the proposed method in comparison against state-of-the-arts. The experimental results reveal that the proposed technique precisely determines the CMF even when the images are contaminated with blurring, noise, compression and can effectively detect multiple CMF. All the three techniques presented in this dissertation are compared against renounced methods of CMFD over multiple image forensic datasets. The evaluation reveals the prominence of the presented methods as compared to state-of-the-arts. Consequently, the proposed techniques can reliably be applied to detect the forged regions and the benefits can be obtained in journalism, law enforcement, judiciary, and other proof critical domains.
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اپنی بات

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حافظ محمد اقبال بن میاں غلام محمد بن میاں نادر علی ماندری بن میاں جندوڈا بن بابا بڈھن قوم آرائیں یہاں تک تو صحیح صحت کے ساتھ ہم نے اپنے بزرگوں سے سنا ہے اور سکونت کے لحاظ سے بھی ہمارا علاقہ یہی ہے ۔ 1890ء کے ریونیو ریکارڈ کے مطابق مشہور دربار عالیہ توگیرہ شریف کے اطراف میں موضع موسیٰ بھوتہ میں ساڑھے نو مربع زر خرید رقبہ تھا جس کو چھوڑ چھاڑ کر بزرگ گائیں لے کر ریاست بیکا نیر چلے گئے ۔ کئی سالوں کے بعد جب واپس آئے تو رقبہ ضبط ہوکر بھوتہ قوم کے کسی فرد کو منتقل ہوگیا تھا ۔ اس وقت یہ قانون تھا کہ تین سال تک جو واجبات ادا نہ کرتا رقبہ بحق گورنمنٹ ضبط ہوجاتا اور قانونی چارہ جوئی کی تاریخ بھی گزر گئی تھی ۔ یوں رقبہ تو گیا مگر ان کی عزت وقار برقرار رہا ۔ آپس میں بھائیوں کا اتفاق تھا اور غریب و مظلوم کی مدد اور اپنے اچھے اخلاقی اصولوں کی وجہ سے وہ لوگوںکے دلوں پرراج کرتے تھے ۔ کسی زمیندار کے ڈیرے پر حاضری نہ دیتے ، آزاد مرضی کے لوگ تھے ۔ جہاں کہیں بھی ان کا تذکرہ ہوتا تو لوگ ان کے خلاف بات کرنے سے گریز کرتے ۔ علاقے میں ان کا ایک نام تھا وہ اس دنیا سے چل بسے اور ان کے اچھے اصول بھی رفتہ رفتہ ختم ہوگئے ۔
راقم الحروف کی پیدائش کا حتمی سال معلوم نہیں البتہ شناختی کارڈ کے مطابق راقم ستمبر ۲۰۲۴ میں محکمہ قانون سے ریٹائرڈ ہونے جارہا ہے۔راقم کی جائے پیدائش چاہ بوٹے والا ہے جو کہ بہاول نگر چک ماتراں سے مغرب کی طرف دو کلو میٹر کے فاصلے پر واقع ہے ۔ راقم نے جونہی ہوش سنبھالی والد صاحب ہیڈ جالوالہ اپنے رقبہ...

Parental Role in Recognition, Prevention and First Aid Management of Foreign Body Aspiration amongst Children

Background: Foreign body aspiration (FBA) is a commonly observed, fatal but preventable condition in children. To reduce the incidence of FBA, it is essential to provide parents with knowledge and guidelines regarding the prevention and management of FBA. Objectives: To assess parental knowledge and parental role in the prevention and first aid management of foreign body aspiration in children. Methods: A descriptive cross-sectional study was carried out at Mayo Hospital, Lahore from January 2019 to September 2019. After IRB approval and informed consent, 151 parents were enrolled through convenient sampling. Data were recorded in a structured questionnaire and analyzed through SPSS version 26. Results: Breathlessness and vomiting were recognized as symptoms of FBA by 49.7% & 7.3% of parents respectively. Hand clutched to throat, color & voice change were recognized as signs by 6.6 %, 9.9 % &10.6 % of the parents. As a first aid measure, 66.2% of individuals knew about back slaps, while only 2% were aware of abdominal thrusts. Literate parents were well aware of the facts that children under the age of three should not consume seeds, hazelnuts, and hard nuts and the child should not laugh or talk while eating compared to illiterate parents (p<0.05) Conclusion: The majority of the parents are not well aware of signs, symptoms, preventive measures and first aid measurements regarding FBA.

Leading Role of Political Dynasties of Faisalabad Division in Politics-1985-2015

Faisalabad Division is comprised of four districts namely Chiniot District, Faisalabad District, Jhang District and Toba Tek Singh District Faisalabad,whose old name is Lyallpur, is famous as Manchester of Pakistan being industrial city. The foundation of Lyallpur was laid in 1896 on the direction of the then time Lt. Governor of the Punjab, Sir James Loyal.Before 1880, it was known as Chenab colony. The map of Faisalabad was planned by Sir Ganga-Ram. River Chenab is at a distance 25-miles towards north-west and river Ravi is at about 27-miles towards East. Area in between these rivers was named Sandal Bar. Strong establishment in central government in sub-continent goes to chandar Gupt Moria, Ashoka family, However different tribes like Pehlvi, Parthvi, Satwahan etc, all are note worthy Hindu rulers. Alexandar the great, Muhammad Bin Qasim, Ghaznvi, Ghori, Mir-Taimor, Subsequent rulers and later Ahmad Shah Abdali attacked the northern side of the India and east India company entered from southern side these invaders brought change in civilization, cultural impact and political thinking. Pre-partition Punjab is attractive site due to fertility of the land. So land was devided accordingly to rain fall in this region, namely Sandal Bar, Gunji Bar, Karana Bar, Gondal Bar, Neeli Bar are famous due to agricultural products. Plateau of potohar is famous for oldest civilation of the world. Sandy and deserted area is of cholistan lies in Bahawalpur-Division and Thal in Sindh tributaries. Gordaspur, Amirsar Ferozpur, Lahore, Kasur in upper souty of Bari-tributory is called Majha, peoples of this area are famous for bravery, healthy, lilitary support culture. Old Punjab was partitioned under the act of 3rd June 1947. Which resulted, Lahore division consisting of Gujranwala, Sheikhpura and Sialkot. Second Division was Multan, havingDera Ghazi Khan, Jhang, Lyallpur, Sahiwal and Muzzaffargarh while in third division, Rawalpindi, Attock , Jhelum. Sseikhpura and Mian-wali District were added. After the breakup of west Pakistan, Punjab Province restored back by general Yahya Khan in 1070. Fertility of the land made Punjab Prominent from other provinces whereas it maintained its cultural as well as traditions. Whereas the percentage of Rajpoot, Jatt, and Arains is more than Pathans or Sindhis in Punjab. As compared to Hindu Caste system, every villager has caste that represent his personality and recognition. Present Punjab is the biggest province of Pakistan on the basis of population. Punjab has nine Divisions and Faisalabad is one to them. The main tribes and castes which are settled in Faisalabad division are Jatt, Arain, Gujjar, Rajput, Mughal, Syed, Pathan, Balochi, Bhatti, Awan and Kashmiri. Before the creation of Pakistan there was a difference between locals and settlers. Afterward, Faisalabad division was molded with the arrival of Mahajreen. The agricultural system is the main cause of its prosperity. The main power of influence lies in villages. British rulers, like Mughals, established administrative management basing the landlord’s co-operation. The term Biradary, is used on small scale level while caste is used at broader level. The basic unit of Punjab Biradarism is village. Its social structure has much low-level itself. These are, Arain, Aroray, Awan, Baloch, Pathan, Pakhi-was, peernay, Jutt, Chohray (Khakh-roob) Dogar, Doom, Rajpoot structures are due to political power and influence. The major Biradaries as accepted by British rulers, Sayyed, Sheikh, Bucher, Kamboh, Kanjar, Khoja, Gujjar, Laghari, Mizari, Makhdom, Gillani, Dohay, Noon, Watto, Moakhal, Twanay, Doltany, Ranay, Roy, Cheema, Chatha, Khosa, Sial, Mazari, Bosal, Kharal, Jiwana, Varyo, Niazi, Khawaja Sheikh, Kashmiri. Much has been written about political situation in Punjab but topic is unique and significant for further investigation of reasons of presence/support of Biradary system in politics of Faisalabad Division. Despite huge politics and social changes during last 70-years, the electoral politics in Pakistan has remained largely basing on family enterprises, Yet Biradary/caste system, is very prominent in Faisalabad Division. Biradary system is follow up old Aryas’s Social system. Hindu-Society strictly adhere where as Muslims replace this with Biradary system. In 1970, on slogan of Roti, Kapara Makkan, Biradary system was broken at provincial and national level yet local grouping remained in contact in local bodies election. However in Zia-ul-Haq regime local bodies election, on-party basis, played very crucial role in up-rooting the Biradary system. Never-theless in General election in 1988, 1990, 1996 and in 2002, the political impact of Biradary system lessened in general election in Punjab. Even then Biradary system remained empowered due to the reason of chairman’s election which were held on the baiss of Biradary system is the indicative of fact that Biradary system campaign remain incontact in National/Provincial or local bodies organizations. That is why regionalism got severe in Punjabi politics and the Baradarism engulfed the province of the Punjab with different Baradaries who got more tendancy of the tradition of Baradarism during martial law, because Political parties cound not take part in politics directly. Before independence, Arain and Jutt Biradary was prominent in local bodies election. Major political party was unionist party and afterward Muslim league achieved historical victory due to Jutt and Arain Biradary. Later on due to migrated peoples made sandal Bar prosperous (Faisalabad Div). Peasants of Faisalabad are more powerful than non-peasants due to Biradism. Up to 1970, Jutt, Rajpoot and Arain was in majority. There are 200-political parties registered with election commission of Pakistan. Some active parties are described. Ratio of different Biradarism based memberism National Assembly in Faisalabad division is as Rajputt: Sayyed: Arain: Religious: Baloch: Jutt: Ansari: Gujjar: Khan: Awan: Malik: Sial: Cheema. The average statistical data for Punjab Provincial Assembly is :: 24%: 18% :14%: 6%: 5%: 17%: 4%: 2%: 4%: 2%: 4%: 1%: 1%: 2%: 1%: 1%: for above Biradaries in Faisalabad division. The prescribed ratio has slight variation in this division of winning of seats in general election year 1988, 1990, 1993, 1997, 2002, 2008, 2013 for provincial assemblies. However, no political party formally nominated candidates for district council’s chairmanship in election 2013. So Biradaries nominatedand planned especially for the success of their councilors. No doubt, the factors of urbanization and industrialization slow down the impact of Biradarism but the process is snail paced which has negative effects on national politics. Incapable, vulgar elements, joined politics as profession and idealized traditions like good will, tolerance unanimity are diminished.To eliminate the Baridarism impact in political system. We should impart and expand education system, provision of justice and fairply be made for idealized politics, maturity of people’s political consciousness, rectitude of political parties and finally increasing the representation of low classes of the society in politics.