@article {18191, title = {Data hiding in curves with application to fingerprinting maps}, journal = {Signal Processing, IEEE Transactions on}, volume = {53}, year = {2005}, month = {2005/10//}, pages = {3988 - 4005}, abstract = {This paper presents a new data hiding method for curves. The proposed algorithm parameterizes a curve using the B-spline model and adds a spread spectrum sequence to the coordinates of the B-spline control points. In order to achieve robust fingerprint detection, an iterative alignment-minimization algorithm is proposed to perform curve registration and to deal with the nonuniqueness of B-spline control points. Through experiments, we demonstrate the robustness of the proposed data-hiding algorithm against various attacks, such as collusion, cropping, geometric transformations, vector/raster-raster/vector conversions, printing-and-scanning, and some of their combinations. We also show the feasibility of our method for fingerprinting topographic maps as well as writings and drawings.}, keywords = {(mathematics);, algorithm;, alignment-minimization, B-spline, CONTROL, curve, data, detection;, edge, embedding;, encapsulation;, fingerprint, geospatial, hiding, identification;, image, iterative, method;, methods;, minimisation;, point;, protection;, registration;, sequence;, spectrum, splines, spread, watermarking;}, isbn = {1053-587X}, doi = {10.1109/TSP.2005.855411}, author = {Gou,Hongmei and M. Wu} } @conference {18288, title = {Video access control via multi-level data hiding}, booktitle = {Multimedia and Expo, 2000. ICME 2000. 2000 IEEE International Conference on}, volume = {1}, year = {2000}, month = {2000///}, pages = {381 -384 vol.1 - 381 -384 vol.1}, abstract = {The paper proposes novel data hiding algorithms and system design for high quality digital video. Instead of targeting on a single degree of robustness, which results in overestimation and/or underestimation of the noise conditions, we apply multi-level embedding to digital video to achieve more than one level of robustness-capacity tradeoff. In addition, an adaptive technique is proposed to determine how many bits are embedded in each part of the video. Besides user data, control information such as synchronization and the number of hidden user bits are embedded as well. The algorithm can be used for applications such as access control}, keywords = {access, adaptive, algorithms;hidden, bits;high, conditions;robustness;robustness-capacity, control;adaptive, data, data;video, design;user, digital, embedding;noise, encapsulation;multimedia, hiding, hiding;multi-level, information;data, processing;, QUALITY, signal, systems;authorisation;data, systems;video, technique;control, tradeoff;system, user, video;multi-level}, doi = {10.1109/ICME.2000.869620}, author = {M. Wu and Yu,Hong Heather} }