Learn More
Content-based image retrieval (CBIR) work includes feature selection, object representation, and matching. If a shape is used as feature, edge detection might be the first step to extract that feature. Invariance to translation, rotation, and scale is required by a good shape representation. Sustaining deformation contour matching is an important issue at(More)
Mesenchymal stromal cells (MSCs) are multilineage progenitors with immunomodulatory properties, including expansion of immunomodulatory leukocytes such as regulatory T lymphocytes (Tregs) and tolerogenic dendritic cells. We report that human MSCs can expand CD14(-)CD11b(+)CD33(+) human myeloid-derived suppressor cells (MDSCs). MSC-expanded MDSCs suppress(More)
OBJECTIVE Coinhibitory signals mediated via programmed death 1 (PD-1) receptor play a critical role in downregulating immune responses and in maintaining peripheral tolerance. Programmed death 1 ligand 1 (PD-L1), the interacting ligand for PD-1, widely expressed in many cell types, acts as a tissue-specific negative regulator of pathogenic T-cell responses.(More)
This paper presents a digital watermarking technique based on Support Vector Machines (SVMs). Use the nice characteristic of the SVM, which can result an optimal hyperplane for the given training samples, the imperceptibility and robustness requirements of watermarks are fulfilled and optimized. In the proposed scheme, to improve imperceptibility, the(More)
In this paper we present a scene-based video watermarking scheme using support vector machines (SVMs). In a given scene, the algorithm uses the first h′ frames to train an embedding SVM, and uses this SVM to watermark the rest of frames. In the extracting phrase, the detector uses center h frames of the first h′ frames to train an extracting SVM. The final(More)
This paper describes the development of a GPS transmission model for improving the attitude accuracy by modelling the GPS transmission path. Various factors are considered, such as receiving antenna gain, distance dependent path loss, effects of the ionosphere, GPS satellite transmitting antenna gain and varying GPS satellite transmission power. The(More)
We present a video watermarking scheme which is robust to video coding standards H.264. The proposed scheme embeds watermark on all AC coefficients of 4×4 DCT blocks of I-frames. It integrates Watson's human visual system and the contents of 4×4 DCT blocks to determine the embedding strength. Since the high correlation of the video content(More)