Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Shaz Naqvi

Dan S Johnson

Tom Malzbender

Barthold Lichtenbelt

The present invention provides a compact, portable system for capturing two dimensional images from printed and related media, as well as three dimensional scenic images, such as photographs, combining the optical features of scanning and photography. A compact, portable image capturing system is provided that is relatively simple and inexpensive, which is easy to operate, rugged, reliable, integrating the navigational and text-gathering functionalities seamlessly, transparently, and reliably, and not prone to optical misalignment, or cessation of scanning and loss of information, obviating much of the repetition of scanning efforts required by the conventional art. The present invention provides a compact, portable system for capturing both two dimensional images from printed and related media, and three dimensional scenic images, such as photographs, while providing constant user feedback of the image quality and effectiveness, during the imaging process.

Compact portable 2D/ 3D image capture system

A volumetric data organization method for volume rendering that is both cache efficient and efficient for hardware graphics design and utilization. A volume data set is divided up into a number of smaller sub-volumes or blocks through a process called blocking. The size of each sub-volume is a function of the computer system being used and/or the application program being run. Typical sub-volume sizes are approximately 5% of cache size. Each voxel tuple in a volume data set is converted to a linear address for linear storage in memory. Two techniques are used for blocking: overlapping and non-overlapping. The non-overlapping blocking technique divides the volume data set up into sub-volumes such that each sub-volume contains a unique set of voxels with no overlap of voxels between sub-volumes. The overlapping blocking technique expands each sub-volume to include voxels located on six planes that are located one voxel away from the sub-volume's existing bounding planes. After employing either technique, each sub-volume can be selected as containing desired or non-desired data. The volume rendering system ignores any sub-volumes that do not contain desired data, greatly speeding up rendering time.

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Ft. Collins, CO, United States of America

Shaz Naqvi