Abstract: The systems and methods of this invention watermark an original data file using dimensional compression and expansion. The original data file extends along a given dimension and has portions that extend along that given dimension. The information is embedded into the data file by selectively dimensionally compressing or expanding a size of each of some or all of the portions along the given dimension, which can be space or time. The portions of the data file are selectively dimensionally expanded or compressed according to a given encoding scheme. This encoding scheme can use the kind of modification, the relationships between the type of modification between adjacent portions, or the duration or degree of compression or expansion to store a portion of the embedded information. The portions of the embedded information can be individual bits of binary or trinary information, or can be a portion of analog information.

Abstract: Aspects of the present invention can be configured to demultiplex an asynchronously multiplexed video signal, which comprises images from a number of different cameras. Image matching techniques are used to assign input images with states. After a period, the number of states will generally equal the number of input cameras. The states may be modeled through any number of techniques, such as histogram analysis, clustering, and hidden Markov model analysis. Input images are assigned to states, and the input images are output as being associated with the states. Zone surveillance may be performed on a series of images from one or more of the states. Any events that occur can be distinguished and reported.

Abstract: A method of processing an image includes processing the image so as to produce a modified image in which the width of each line object is a single pixel, identifying pixels of the modified image which are relocated on a line object, and allocating to each image point a score value dependent upon the number of adjacent pixels which are likewise located on a line, determining from the score values which of the image points is disassociated with a crossing point or a bifurcation of the respective line object, performing a matching operation on pairs of line segments for each crossing point, classifying the line objects in the original image into two arbitrary sets, and designating one of the sets as representing venous structure, the other of the sets as representing arterial structure.

Abstract: The invention aims at providing personal identification in environments where non-contact is required, with high accuracy even though using a finger vein pattern images unclear and susceptible to positional deviations, wherein it has: a means for acquiring finger vein patterns without contact; a means for carrying out rotational correction using the outline of a finger as a method of taking out a vein pattern contained in the acquired image; a means for normalizing the position of the finger image with reference to the fingertip; a means for acquiring an overall vein pattern statistically by repetitively tracking regions of dark luminance intensities for a desired length from a desired position in the image; a matching means for comparing regions where vein patterns manifest vivid features; and a means for independent matching of subregions and evaluating positional deviations where matching is recognized.

Abstract: A watermark and extracting method and a watermark hardware structure used in an image compression system. A series of data is generated by random variables, such that duplication is avoided. According to characteristics of the human vision system, weighted value of each block is analyzed by classification in the frequency domain. According to the specific weighted value for each block, a watermark intensity is embedded, such that the embedded watermark is not easily observed, while the robustness is retained. Therefore, the original figure is not required for extraction. In addition, the watermark embedding hardware structure can be incorporated in a joint photographic experts group (JPEG) system, so that the image itself contains the watermark data while being intercepted.

Abstract: A security feature, by which a genuine document can readily be visually distinguished from a reproduction, employs finely detailed, laterally spaced structures to yield the illusion of a 3D texture. When replicated using commonly-available scanning or printing devices, the fine detail is lost, and with it the 3D illusion.

Abstract: Disclosed is a method of analyzing curvilinear structures by receiving three-dimensional space imaging data of a curvilinear structure, defining an axis curve within the curvilinear structure, sweeping a line segment along said axis curve so as to define a ribbon in said three-dimensional space, and adsorbing data from said three-dimensional space onto said ribbon. This ribbon may then be flattened for convenient examination.

Abstract: An image transmission system includes: a client; a server; and a network connecting the client and the server. The client includes: an image request section that requests transmission of image data; an output instruction section that issues an output instruction for an image data file of a general purpose format; and an output section that outputs the image data file of the general purpose format specified as an output file. The server includes: a watermark insertion section that forms high-resolution data as an image data file to be transmitted and low-resolution data as a general purpose format file of image data to which an electronic watermark is given to specify the high-resolution data as watermark information whose resolution is reduced relative to the high-resolution data; and a distribution section that transmits the high-resolution data, the low-resolution data and a data selection program.

Abstract: The present invention includes in a system and method for estimating and tracking an orientation of a user's face by combining head tracking and face detection techniques. The orientation of the face, or facial pose, can be expressed in terms of pitch, roll and yaw of the user's head. Facial pose information can be used, for example, to ascertain in which direction the user is looking. In general, the facial pose estimation method obtains a position of the head and a position of the face and compares the two to obtain the facial pose. In particular, a camera is used to obtain an image containing a user's head. Any movement of the user's head is tracked and the head position is determined. A face then is detected on the head and the face position is determined. The head and face positions then are compared.

Abstract: An image input section inputs an image of a letter P and stores the same into an image memory. A stamp detecting section detects a stamp by a luminance projection value based on the image of the letter stored in the image memory, determining that an area is not an external area of the stamp and determining the area as an internal area of the stamp if the length of the area is smaller than a stamp internal gap permissible threshold value used for determining a stamp internal gap even in a case where the area which is partly determined as an external area of the stamp is present in an area which is determined as the internal area of the stamp affixed to the letter P based on the thus derived projection value.