Abstract: A technique for hiding information in an image that is based a property of the human vision system. Because of its relation to human vision properties, the technique of the present invention provides an information hiding capacity is as large as 50% of the original image data. The method includes the steps of segmenting each region of a vessel image into informative and noise-like regions by using a threshold value, arranging the data into a series of data blocks, and embedding each data block into the noise-like regions of the image.

Abstract: A method and computer program product for embedding information within an indexed color image such that the existence of the data is not recognizable by the human eye. The method includes the steps of altering color image data, such that it will not cause a large color change in the representing image, and hiding information using an information hiding method. The altering step is accomplished via a color set changing method. The color set changing method involves first decomposing the image in to a set of color component images, embedding data in the color component or components, which the human visual system is most sensitive to, then merging representative colors until the number of representative colors is less than or equal to the target number of colors and reformatting the resulting image into indexed color image format.

Abstract: A display device is constructed with a support for cyclic or repetitive motion. An array of lights is mounted on the support for sweeping across a region of space during motion of the support. A microcontroller or other microprocessor is coupled to the lights for turning on and off the respective lights of the array. A periodically actuated switch such as an inertial switch is coupled to the microcontroller for measuring the time period or cycle time of a cycle of the cyclic or repetitive motion of the support and for indicating initiation of a cycle. The microcontroller is programmed for synchronizing the turning on and off of respective lights of the array according to the time period or cycle time of a cycle of the cyclic or repetitive motion of the support for forming at least one image across the region of space swept by the array of lights using persistence of vision of a viewer. According to one example the support is a hand held wand for hand held swinging motion back and forth.

Abstract: An apparatus for trimming a sole of a shoe includes a support structure and a shoe carriage mounted on the support structure. The shoe carriage is constructed and arranged for mounting a shoe thereon and is movable along x and z axes. A sensing station is mounted on the support structure, the sensing station having a detector for detecting the exact outline of the shoe upper with respect to the sole. A cutting station is mounted on the support structure for trimming the sole of the shoe with a first cutter. The first cutter is movable along a y axis and rotatable about a t axis. A microprocessor controls the movement of the carriage between a starting position, the sensing station, the cutting station and back to the starting position and controls the operation and movement of the first cutter for trimming the sole of the shoe when the shoe is in the cutting station. A process for trimming a sole of a shoe is also disclosed.