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Full-Text Articles in Engineering
System And Method For 3d Imaging Using Structured Light Illumination, Laurence G. Hassebrook, Daniel L. Lau, Henry G. Dietz
System And Method For 3d Imaging Using Structured Light Illumination, Laurence G. Hassebrook, Daniel L. Lau, Henry G. Dietz
Electrical and Computer Engineering Faculty Patents
A biometrics system captures and processes a handprint image using a structured light illumination to create a 2D representation equivalent of a rolled inked handprint. The biometrics system includes an enclosure with a scan volume for placement of the hand. A reference plane with a backdrop pattern forms one side of the scan volume. The backdrop pattern is preferably a random noise pattern and the coordinates of the backdrop pattern are predetermined at system provisioning. The biometrics system further includes at least one projection unit for projecting a structured light pattern onto a hand positioned in the scan volume on …
Lock And Hold Structured Light Illumination, Laurence G. Hassebrook, Daniel L. Lau, Charles J. Casey
Lock And Hold Structured Light Illumination, Laurence G. Hassebrook, Daniel L. Lau, Charles J. Casey
Electrical and Computer Engineering Faculty Patents
A method, system, and associated program code, for 3-dimensional image acquisition, using structured light illumination, of a surface-of-interest under observation by at least one camera. One aspect includes: illuminating the surface-of-interest, while static/at rest, with structured light to obtain initial depth map data therefor; while projecting a hold pattern comprised of a plurality of snake-stripes at the static surface-of-interest, assigning an identity to and an initial lock position of each of the snake-stripes of the hold pattern; and while projecting the hold pattern, tracking, from frame-to-frame each of the snake-stripes. Another aspect includes: projecting a hold pattern comprised of a …