Moving Object Detection in Wavelet Compressed Video

Cataloged from PDF version of article.In many surveillance systems the video is stored in wavelet compressed form.In this paper, an algorithm for moving object and region detection in video which is compressed using a wavelet transform (WT) is developed.The algorithm estimates the WT of the background scene from the WTs of the past image frames of the video.The WT of the current image is compared with the WT of the background and the moving objects are determined from the difference.The algorithm does not perform inverse WT to obtain the actual pixels of the current image nor the estimated background. This leads to a computationally efficient method and a system compared to the existing motion estimation methods. (C) 2005 Published by Elsevier B.V

Sinop at the Travelogues

Seyahatname, Arapça gezmek, gezi anlamındaki seyâhat ile, Farsça risale, mektup anlamındaki nâme kelimelerinin birleşmesiyle oluşmuştur. En geniş anlamıyla seyahatname, herhangi bir gezgin veya gözlemcinin ziyaret ettiği belli bir coğrafi alana ve tarihsel döneme dair izlenimlerini ve topladığı bilgileri yazıya aktardığı metinlerdir. Seyyah tanımlaması, sadece yabancı topraklardan gelen gezginlerle sınırlı değildir, aynı zamanda ait olduğu topraklara dair izlenimlerini aktaran gözlemcileri de kapsar. Seyahatnameler, iletişim imkânlarının kısıtlı olduğu dönemlerde bilimsel ve kültürel gelişmelerin aktarıcısı konumunda olmuştur. 1453 öncesinde yazılan Anadoluya yönelik seyahatnameler, Haçlı seferlerine katılan görgü tanıklarının veya Anadoludan Asyaya uzanan ticaret yollarından geçen tacirlerin aktarımlarıdır. XV. yüzyılın son yarısında Suriye ve Mısırın Osmanlılar tarafından alınması, 1580li yıllarda Osmanlıdan Hindistana uzanan doğu ticaret yolunun önem kazanması, Osmanlının bir siyasi güç olarak yükselişi ve Avrupa devletleriyle yoğun ilişkilerin başlamasıyla, imparatorluk topraklarına yönelik seyahatnameler ivme kazanır. Öte yandan Doğu; hem ötekinin yaşadığı zengin ülke, hem de Hz. İsanın doğduğu, Hıristiyanlığı yaydığı ve çarmıha gerildiğine inanılan kutsal topraktır. Dolayısıyla Doğuya gitmek, Batılılar için kendi özüne dönüş anlamı taşımaktadır. Bu çalışmada Sinopun Türklere geçmesinden sonra, 13. yüzyıldan başlayarak bu şehre gelen Doğulu ve Batılı seyyahların yazdığı seyahatnameler, kronolojik olarak incelenmiştir.Seyahatname (Travelogue), consists of two words; seyahat in Arabic and nâme in Persian. Seyahatname in the broadest sense is the texts in which travelers and observers collect their impressions of a visited specific geographical area and/or information for a particular historical period. The definition of Seyyah (traveler) is not limited only to the foreign travelers but includes local observers who transfer their impressions for their own land also. Seyahatname s are the transmitters of scientific and cultural advancements where communication facilities are limited. The seyahatname s which has been written before 1453 and intended for Anatolia were the quotations of the eye witnesses of the crusaders or merchants who travelled from Anatolia to Asia. Seyahatname s on the territory of the empire gains momentum after invading of Syria and Egypt by the Ottomans, increasing importance of east trade lines from Ottomans to India by the years of 1580 s, the rise of Ottomans as a political power and beginning of intensive relations with European countries. On the other hand, East means both the rich land where the others are living and the holy land where it s believed that the Jesus was born and crucified. Traveling to east means returning to their self-essence. In this article, the seyahatnames, which has been written by eastern and western travelers coming to town beginning with 13th cent., after the Sinope captured by Turks are chronologically analyze

A small library of chalcones induce liver cancer cell death through Akt phosphorylation inhibition

Hepatocellular carcinoma (HCC) ranks as the fifth most common and the second deadliest cancer worldwide. HCC is extremely resistant to the conventional chemotherapeutics. Hence, it is vital to develop new treatment options. Chalcones were previously shown to have anticancer activities in other cancer types. In this study, 11 chalcones along with quercetin, papaverin, catechin, Sorafenib and 5FU were analyzed for their bioactivities on 6 HCC cell lines and on dental pulp stem cells (DPSC) which differentiates into hepatocytes, and is used as a model for untransformed control cells. 3 of the chalcones (1, 9 and 11) were selected for further investigation due to their high cytotoxicity against liver cancer cells and compared to the other clinically established compounds. Chalcones did not show significant bioactivity ([Formula: see text]) on dental pulp stem cells. Cell cycle analysis revealed that these 3 chalcone-molecules induced SubG1/G1 arrest. Akt protein phosphorylation was inhibited by these molecules in PTEN deficient, drug resistant, mesenchymal like Mahlavu cells leading to the activation of p21 and the inhibition of NF[Formula: see text]B-p65 transcription factor. Hence the chalcones induced apoptotic cell death pathway through NF[Formula: see text]B-p65 inhibition. On the other hand, these molecules triggered p21 dependent activation of Rb protein and thereby inhibition of cell cycle and cell growth in liver cancer cells. Involvement of PI3K/Akt pathway hyperactivation was previously described in survival of liver cancer cells as carcinogenic event. Therefore, our results indicated that these chalcones can be considered as candidates for liver cancer therapeutics particularly when PI3K/Akt pathway involved in tumor development

Moving region detection in compressed video

In this paper, an algorithm for moving region detection in compressed video is developed. It is assumed that the video can be compressed either using the Discrete Cosine Transform (DOT) or the Wavelet Transform (WT). The method estimates the WT of the background scene from the WTs of the past image frames of the video. The WT of the current image is compared with the WT of the background and the moving objects are determined from the difference. The algorithm does not perform inverse WT to obtain the actual pixels of the current image nor the estimated background. In the case of DOT compressed video, the DC values of 8 by 8 image blocks of Y, U and V channels are used for estimating the background scene. This leads to a computationally efficient method and a system compared to the existing motion detection methods. © Springer-Verlag 2004

Proteomic analysis of plasma exosomes from cystic echinococcosis patients provides in vivo support for distinct immune response profiles in active vs inactive infection and suggests potential biomarkers

The reference diagnostic method of human abdominal Cystic Echinococcosis (CE) is imaging, particularly ultrasound, supported by serology when imaging is inconclusive. However, current diagnostic tools are neither optimal nor widely available. The availability of a test detecting circulating biomarkers would considerably improve CE diagnosis and cyst staging (active vs inactive), as well as treatments and follow-up of patients. Exosomes are extracellular vesicles involved in intercellular communication, including immune system responses, and are a recognized source of biomarkers. With the aim of identifying potential biomarkers, plasma pools from patients infected by active or inactive CE, as well as from control subjects, were processed to isolate exosomes for proteomic label-free quantitative analysis. Results were statistically processed and subjected to bioinformatics analysis to define distinct features associated with parasite viability. First, a few parasite proteins were identified that were specifically associated with either active or inactive CE, which represent potential biomarkers to be validated in further studies. Second, numerous identified proteins of human origin were common to active and inactive CE, confirming an overlap of several immune response pathways. However, a subset of human proteins specific to either active or inactive CE, and central in the respective protein-protein interaction networks, were identified. These include the Src family kinases Src and Lyn, and the immune-suppressive cytokine TGF-β in active CE, and Cdc42 in inactive CE. The Src and Lyn Kinases were confirmed as potential markers of active CE in totally independent plasma pools. In addition, insights were obtained on immune response profiles: largely consistent with previous evidence, our observations hint to a Th1/Th2/regulatory immune environment in patients with active CE and a Th1/inflammatory environment with a component of the wound healing response in the presence of inactive CE. Of note, our results were obtained for the first time from the analysis of samples obtained in vivo from a well-characterized, large cohort of human subjects

Giant hepatic hydatid cyst with sub-fascial extension treated by open minimally invasive surgery: a case report

<p>Abstract</p> <p>Introduction</p> <p>Hepatic hydatid disease can be successfully treated by a variety of modalities.</p> <p>Case Presentation</p> <p>We report a case of a 60 year old male with giant hepatic hydatid disease who presented with a huge cystic mass in the upper abdomen. Diagnosis was confirmed by serology, ultrasonography and CT scan. The patient was treated successfully by open minimally invasive surgery with minimum breaching of the peritoneal cavity using a laparoscopic trocar to evacuate the cyst.</p> <p>Conclusion</p> <p>The use of a laparoscopic trocar through a small abdominal incision in selected patients with hepatic hydatid disease with subfascial extension can be a safe, minimally-invasive option of treatment</p

Primum Non Nocere in interventional oncology for liver cancer: How to reduce the risk for complications?

: Interventional oncology represents a relatively new clinical discipline based upon minimally invasive therapies applicable to almost every human organ and disease. Over the last several decades, rapidly evolving research developments have introduced a newer generation of treatment devices, reagents, and image-guidance systems to expand the armamentarium of interventional oncology across a wide spectrum of disease sites, offering potential cure, control, or palliative care for many types of cancer patients. Due to the widespread use of locoregional procedures, a comprehensive review of the methodologic and technical considerations to optimize patient selection with the aim of performing a safe procedure is mandatory. This article summarizes the expert discussion and report from the Mediterranean Interventional Oncology Live Congress (MIOLive 2020) held in Rome, Italy, integrating evidence-reported literature and experience-based perceptions as a means for providing guidance on prudent ways to reduce complications. The aim of the paper is to provide an updated guiding tool not only to residents and fellows but also to colleagues approaching locoregional treatments

Solitary pancreatic tuberculous abscess mimicking pancreatic cystadenocarcinoma: a case report

BACKGROUND: The incidence of pancreatic tuberculosis is extremely rare, and it frequently misdiagnosed as pancreatic neoplasms. The nonsurgical diagnosis of this entity continues to be a challenge. CASE PRESENTATION: A 33 year old male with six-month history of intermittent right epigastric vague pain and weight lost had found a solitary pancreatic cystic mass and diagnosed as pancreatic cystadenocarcinoma. The chest X-ray film and physical examination revealed no abnormalities. Abdominal ultrasound (US) examination showed an irregular hypoechoic lesion of 6.6 cm × 4.4 cm in the head of pancreas, and color Doppler flow imaging did not demonstrate blood stream in the mass. The attempts to obtain pathological evidence of the lesion by US-guided percutaneous fine needle aspiration failed, an exploratory laparotomy and incisional biopsy revealed a caseous abscess of the head of pancreas without typical changes of tuberculous granuloma, but acid-fast stain was positive. CONCLUSIONS: Pancreatic tuberculosis should be considered in the differential diagnosis of focal pancreatic lesions, especially for young people in developing countries

Mixture of learners for cancer stem cell detection using CD13 and H and e stained images

In this article, algorithms for cancer stem cell (CSC) detection in liver cancer tissue images are developed. Conventionally, a pathologist examines of cancer cell morphologies under microscope. Computer aided diagnosis systems (CAD) aims to help pathologists in this tedious and repetitive work. The first algorithm locates CSCs in CD13 stained liver tissue images. The method has also an online learning algorithm to improve the accuracy of detection. The second family of algorithms classify the cancer tissues stained with H and E which is clinically routine and cost effective than immunohistochemistry (IHC) procedure. The algorithms utilize 1D-SIFT and Eigen-Analysis based feature sets as descriptors. Normal and cancerous tissues can be classified with 92.1% accuracy in H and E stained images. Classification accuracy of low and high-grade cancerous tissue images is 70.4%. Therefore, this study paves the way for diagnosing the cancerous tissue and grading the level of it using H and E stained microscopic tissue images. © 2016 SPIE