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Depending on the PCB fiber weave style, electrically long differential microstrip signal traces may introduce significant signal skew due to weave effect that deteriorates the signal quality. As closed-form expression for the effective permittivity that includes the weave effect is not readily available, full-wave method is often used to study the weave effect. As such, a novel analytical method is...
Electrically long differential signal traces may introduce significant signal skew due to weave effect that deteriorates the signal quality. As serial data link pushes towards higher data transfer rate and yet the length of the signal trace has not reduced, the weave effect will become significant. Full wave method is often used to study the weave effect, however, the computational time is expensive...
A novel 24-sided concave-convex geometry monolithic transformer that has high self-resonant frequency and quality factor is presented. It is implemented with the top level thick Cu metal and multiple geometrical structures in 0.13 um CMOS mixed-signal 1P6M salicide back-end process. Compared to those with conventional square, hexagonal and octagonal geometry structure, the novel transformer achieves...
This paper proposed an approach based on epipolar geometry for three-dimensional (3D) vertebrae reconstruction from two conventional radiographic views (posteroanterior and lateral). The proposed method consisted in detecting the corresponding landmarks and estimating the 3D coordinates of landmarks under the constraint of epipolar geometry. With the 3D landmarks reconstructed as control points, the...
This paper describes general framework photo-realistic 3D visualization of urban building with digital map, Lidar point and close-range image in photogrammetry community. First, Vanish Point (VP) geometry deduced from classic photogrammetry co-linear equation is used to obtain camera Interior Of Parameter (IOP) using groups of mutually orthogonal space lines appeared in buildings; Next, "line...
ASM (active shape model) and AAM (active appearance model) model are both parametric model based on statistics. We can locate the key points of a face by AAM model accurately. There is a shape model both in the ASM and AAM. When we build the ASM model and AAM model, we must align the shapes of the training set to a unified framework. In the original alignment process, there are only scale, rotation...
This paper describes general framework of photo-realistic 3D visualization of urban building with digital map, Lidar point and close-range image in photogrammetry community. First, Vanish Point (VP) geometry deduced from classic photogrammetry co-linear equation is used to obtain camera Interior Of Parameter (IOP) and Exterior Of Parameter (EOP) using groups of mutually orthogonal space lines appeared...
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