Learn More
Digital watermark technology is used to protect the legal owner's copyrights. We propose a blind watermarking algorithm combination of Discrete Wavelet Transform (DWT) and Discrete Cosine Transform (DCT). The watermark is scrambled by Arnold and embedded in a spread spectrum pattern using pseudo random. The block-based DCT transform of DWT LL sub-band is(More)
Altered expression of prostate tumor overexpressed-1 (PTOV1) is observed in various types of human cancers. However, the role of PTOV1 in epithelial ovarian cancer (EOC) remains unclear. PTOV1 messenger (m)RNA expression in EOC patients was evaluated by quantitative real-time PCR (qRT-PCR). PTOV1 protein expression was also analyzed in archived(More)
Little is known about the risk factors associated with hepatitis B virus (HBV) intrauterine transmission among HBsAg-positive mothers. We conducted a study in Taiyuan, China, including 1133 HBsAg-positive mothers and their babies. A total of 101 neonates had HBsAg and/or HBV DNA positive with an intrauterine transmission rate of 8.9%. Maternal menstrual(More)
In modern radar reconnaissance system, feature extraction of multi-component LFM signal based on Wigner-Hough transform has been disturbed by the noise. Faced with this problem, firstly, use the improved Sobel operator of digital image processing to detect edge feature of WVD figure of signal with noise, and then search local max in parameter space though(More)
In this paper, we present a design and implementation of multi-standard video decoder, which adopts the principle of HW/SW cooperation to achieve real time video decoding process. Based on the profiling of MPEG-1/2/4 video decoding algorithms, the computational intensive IDCT and sub-pixel interpolation are figured out to implement with hardware, and the(More)
Rare colored capsule (RCC) is the capsule which is mixed in the normal product but with different color. To detect this kind of capsules online, a method based on RGB color space and using HSV color difference formula is proposed in this paper. Considering HSV color space with more balanced color-difference perception, the original RGB formatted capsule(More)
Detecting and estimating multi-component LFM signal based on fractional Fourier transform (FrFT) becomes a hot field in recent years. In most situations, it will come across multi-component LFM signal with similarly parameters in signal processing. This means illegibility occurs in time-frequency analysis and there is a problem about resolution ability.(More)
Regional hypoxia caused by accelerated cell proliferation and overgrowth is an important characteristic of neoplasm. Hypoxia can cause a series of changes in gene transcription and protein expression, thereby not only inducing tumor cell resistance to radiotherapy and chemotherapy but also promoting tumor invasion and metastasis. This study aimed to(More)
AIM OF THE STUDY This study was conducted in the Naban River Watershed National Nature Reserve to identify and analyse knowledge and use of wild plants for medicinal purposes by Hani ethnicity and to search out culturally as well as economically important plant species and land use types. MATERIAL AND METHODS Ethnobotanical data was collected using(More)