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Although Synthetic Aperture Radar (SAR) can capture rich land cover information as a most important advanced technique in the field of international earth observation, the application effects still limited significantly. One of the reasons is that the study of SAR imaging processing, SAR image processing and SAR applications are usually conducted respectively, and the study on integrating the three...
Hypertext is the most popular file format on the Internet, which has simple formal standard, and has the feature of non-continuity. This paper studies how to extract information from hypertext by regular expression, gives results of how to extracting weather information from the weather forecasting pages of sohu, sina and tencent. This paper gives the feasible extraction approach of hyper text, which...
This paper studied the management and operator schema of spatial data based on metadata. The mining multi-scale DLG Data Organization and Management System is established by ArcEngine and Oracle as development platforms. The system can provide a convenient and intuitive data resource management platform for the mining production manager, and the database functions supplied effective access to the...
Sleep scheduling protocols are widely used in wireless sensor networks for saving energy in sensor nodes. However, without considering the special requirements of object tracking, conventional sleep scheduling protocols may lead to intolerable degradation of tracking qualities when they are used in object tracking applications. To handle this problem, sleep scheduling protocols tailed for object tracking...
Botnets have been recognized as one of the most important threats to the Internet security. They are engaged in DDOS attacks, email spamming and other malicious activities likewise. Traditional botnets usually organized themselves in a hierarchy architecture, which offers professionals opportunities to detect or defend the botnets in their servers. However, newly-appeared P2P botnet such as Storm...
The goal of blind steganalysis is to detect the presence of hidden data and to eventually extract them from the stego images generated by various data hiding schemes. In this paper, we construct a new blind classifier capable of detecting several steganographies for JPEG images. Thirteen statistics are collected in the DCT domain and spatial domain. By using the characteristic function and the center...
With the feature size shrinking down to 65 nm and beyond, manufacturing process variation starts to significantly impact the device and interconnect electrical parameters, and therefore the performance of circuits. Back-end-of-line (BEOL) design for manufacturability concerns such as lithography variation and misalignment are more pronounced in the advanced technology node. Since SRAM cell always...
This paper proposes a lossless data hiding scheme with high embedding capacity, which can recover the original image without any distortion after the hidden data have been extracted. In this scheme, difference value of the adjacent pixels is calculated first. After adjusting the difference slightly, we can increase (decrease) it by 1 or maintain it intact to embed information into the cover image...
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