Comparison of Quantization Index Modulation and Forbidden Zone Data Hiding for Compressed Domain Video Data Hiding

Data hiding is now a part of daily life through various applications. In this work, we apply two data hiding methods, Quantization Index Modulation and Forbidden Zone Data Hiding, to video applications. We place these methods into a general video data hiding scheme and compare their performance against compression attacks. The results of the experiments with typical TV content indicate the superiority of FZDH, specifically for powerful attacks

Effectiveness of 2-year application of schoolbased chlorhexidine varnish, sodium fluoride gel, and dental health education programs in high-risk adolescents

PubMed ID: 18560640Objective: To compare the caries preventive effects of 2-year application of school-based chlorhexidine varnish, sodium fluoride gel, and dental health education programs among a high-risk group of 11- to 13-year-olds with low caries activity. Method and Materials: A total of 149 subjects who had previous caries experience in the primary dentition and Streptococcus mutans levels higher than 105 at baseline with 0 DMFS index were selected for this randomized clinical trial. Subjects were allocated to one of 3 groups for treatment with chlorhexidine varnish (n = 50), sodium fluoride gel (n = 50), or a dental health education program (n = 49), which were repeated throughout the 2-year study. The outcomes examined at the end of the study were the caries increment (DMFS index), dental plaque scores, and salivary S mutans counts. Results: The subjects in the education group showed a significant increase in the salivary levels of S mutans in comparison with the other groups (P = .004), but there was no significant difference among the groups in the caries increment after 2 years, with mean DMFS ± SD as 0.95 ± 1.33, 0.88 ± 1.47, and 1.05 ± 2.01 in the chlorhexidine varnish, sodium fluoride gel, and education groups, respectively. There were also no significant differences in the pre- and posttreatment plaque scores between the groups. Conclusion: Although all 3 preventive programs in this high-caries-risk group of children with low caries activity resulted in similar plaque and caries values after 2 years, longer follow-up studies are needed to clarify the effect of reduction in S mutans growth by chemotherapeutic agents in caries inciden. © 2008 by Quintessence Publishing Co Inc

Boundary Matching Based Translucent TV Logo Detection

Increasing trend in the usage of translucent television logos by broadcast channels renders opaque logo detection algorithms inadequate. Important applications such as identification of broadcast types make the detection of translucent logos a significant requirement. This paper presents a method for detecting translucent television logos in video streams. Firstly, boundary information of the logo, which will be searched in broadcast stream, is extracted manually. This search is carried out by comparing the edge map of the luminance channel of the interest region with inner and outer contours of the logo using different metrics. Performance is increased by utilization of temporal redundancies and solutions to special problematic cases. Furthermore, traces of the logo boundaries are examined in chrominance channels of video frames in order to eliminate false alarms caused by opaque logos with the same boundaries. Promising results indicate the applicability of the method in real life

FEATURE ENCODING MODELS FOR GEOGRAPHIC IMAGE RETRIEVAL AND CATEGORIZATION

In this work, we survey the perormance of various feature encoding models for geographic image retrieval task Recently introduced Vector-of-Locally-Aggregated Descriptors (VLAD) and its Product Quantization encoded binary version VLAD-PQ are compared with the widely used Bag-of-Word (BoW) model. Evaluation results are shown on a publicly available 21-class LULC dataset. With experiments, it is shown that VLAD outperforms classical BoW representation albeit with some increases in the computation time. Additionally, VLAD-PQ results in similar retrieval performance with VLAD but requiring no more computational or memory resources are observe

Fistulized Crohn’ Disease Mimicking Sigmoid Cancer: A Case Report

Crohn’s disease is an inflammatory bowel disease of unknown etiology, progressing with frequent exacerbation periods that can involve any part of the gastrointestinal tract. Although, it can manifest itself with complaints from the entire gastrointestinal tract; abdominal pain, diarrhea, nausea, weight loss and fever are the most important clinical symptoms. In this presentation, a 41-year-old male patient with known Crohn’s disease was presented to our hospital with the help of operation images

The protective effect of erythropoietin on ischaemia/reperfusion injury of liver

Backgroun

A fast method for animated TV logo detection

As a recent trend some TV stations prefer to use animated logos, therefore the detection of the presence of an animated TV logo emerges as a new requirement for certain applications. In this paper we present a novel method for the detection of animated television logos in real-time. The main idea is to handle all frames of the animated logo in a unified manner. For this purpose a unified logo boundary representation is utilized. In the training stage, the boundaries of the animated logo from each frame are placed in a single set. During detection, a voting-based decision scheme is performed in order to determine the presence of the trained logo. Furthermore robustness of the method is improved by incorporating negative clues regarding the existence of the animated logo obtained from the region of interest. Aforementioned clues are unified in order to reach a final decision by using effective combination rules. Finally, time windowing is used for eliminating false positives with short durations. The proposed method is examined through typical broadcast data and promising results are obtained

The struggle against endometrial cancer: ten years of experience of a tertiary center

Objectives: We aimed to investigate the clinical and pathological factors of our patients who were diagnosed with endometrial cancer in terms of prognosis. With this study, we present our 10 years of surgical experience in endometrial carcinoma cases. Material and methods: Four hundred twelve patients with endometrial carcinoma who applied to our center between 2010–2019 and that we followed up were evaluated retrospectively. Results: Most of the tumors were low-grade endometrioid malignancies. Non-endometrioid types accounted for 12.1% of cases. Lymph node dissection was performed in 395 of 412 patients (95.9%). 66 (16.01%) of the 412 patients died during the follow-up period in the study sample. Higher OS and DFS rates were associated with endometrioid histological types, FIGO stage, absence of lymphovascular space invasion, lower grade and less than 50% myometrial invasion (p < 0.05). 5-year OS at stage 1, 2, 3, 4 was found as 88.9 ± 2.2%, 65.5 ± 10.8%, 49.4 ± 0.79% and 23.7 ± 0.97% respectively. 5-year DFS at stage 1, 2, 3, 4 was found as 84.1 ± 2.6%, 65.5 ± 10.8%, 47.7 ± 0.78% and 23.7 ± 0.97% respectively.  In univariate analysis, Age, tumor histology, FIGO stage, histological grade, LVSI, positive peritoneal cytology, cervical involvement, myometrial invasion and not receiving adjuvant therapy were defined as prognostic factors. Conclusions: Age, grade, FIGO stage, myometrial invasion, histological type, LVSI involvement, cervical involvemet, positive peritoneal cytology and not receiving adjuvant therapy are important prognostic factors for progression-free survival and overall survival in patients diagnosed with endometrial cancer