How to access Cadence on Fedora 16
I wanted to share the process of getting started after installing fedora 16 for Cadence login account.Fedora 16 is very easy to explore as it has a really easy interface and GUI.
1. Click on the terminal and you will be already logged on your user account.Then switch to the root account by using the following command in the terminal.
su – root
2. Insert the root password of the linux installed on your PC, after the prompt.
3.Install the x11 by typing:
yum groupinstall “X Software Development”
Remember you have to connected to the internet to perform this operation because the yum installer downloads the repositories from the internet.Otherwise you can download the packages from the xming website and then source them yourself.
4.Install the fonts that are requried for our server by typing the following:
yum install xorg-x11-fonts-75dpi
and then install the second one,
yum install xorg-x11-fonts-ISO8859-1-75dpi
5.Finally you can switch to your account on cadence
ssh -X user@hostname
If the -X option is specified, X11 forwarding is enabled.Othewise it will display Xwindows error.
and use your cadence account from there on.
De-noising efforts on mono-metal material for Industrial Computed Tomography (ICT) -Part 2
Please find the respective information in the following paper.
Qureshi,H., Malik,M., Ahmad,M.A., Heinzl,C.: “Benchmarking of De-noising Techniques for Streaking Artifacts in Industrial 3DXCT Scan Data” (http://www.wscg.eu/)
Abstract:
De-noising is one of the most important applications of
image processing, which has found application in a wide
variety of domains. De-noising allows for improving
image quality in noise prone imaging modalities.
Although, de-noising has been applied rigorously in 2D
imaging, but new modalities of imaging such as industrial
3D X-ray computed tomography (3DXCT) have not
received much attention. Industrial XCT scanning is used
today to acquire images of industrial components and
machinery so that defects within these can be identified
non-destructively and non-intrusively. However, the main
problem in XCT is that XCT imaging is prone to artifacts
and noise in the generated data. One solution to the
problem is the increased number of projections which
results in reduced noise but leads to increased cost. In
this paper, we show how various de-noising techniques
may be used to de-noise 3DXCT scan images. We also
benchmark these techniques using various picture quality
measures. Our investigation shows that high quality
results may be obtained using wavelet shrinkage and
anisotropic diffusion.
De-noising efforts on mono-metal material for Industrial Computed Tomography (ICT) -Part 1
Please find the respective information in the following paper.
Qureshi,H., Malik,M., Ahmad,M.A., Heinzl,C.: “Benchmarking of De-noising Techniques for Streaking Artifacts in Industrial 3DXCT Scan Data” (http://www.wscg.eu/)
Abstract:
De-noising is one of the most important applications of
image processing, which has found application in a wide
variety of domains. De-noising allows for improving
image quality in noise prone imaging modalities.
Although, de-noising has been applied rigorously in 2D
imaging, but new modalities of imaging such as industrial
3D X-ray computed tomography (3DXCT) have not
received much attention. Industrial XCT scanning is used
today to acquire images of industrial components and
machinery so that defects within these can be identified
non-destructively and non-intrusively. However, the main
problem in XCT is that XCT imaging is prone to artifacts
and noise in the generated data. One solution to the
problem is the increased number of projections which
results in reduced noise but leads to increased cost. In
this paper, we show how various de-noising techniques
may be used to de-noise 3DXCT scan images. We also
benchmark these techniques using various picture quality
measures. Our investigation shows that high quality
results may be obtained using wavelet shrinkage and
anisotropic diffusion.
How to save simulation states in Cadence
After we setup any analysis in the “Analog Design Environment” (ADE) such as for example “Transient Analysis” , we usually run the simulation and get the results. In some cases the total real time for the simulation is more than 30 minutes or so. Although the transient simulation time is set to 1 ms (for example). This is because the solver takes time to solve the conditions presented to it, and also depends on the complexity of the circuit.
Delta-Sigma A/D Converters
Delta-Sigma Modulator A/D Converters are a class of Oversampled Data-Converters which have been used commercially in the past ten years as a viable alternative for Nyquist-rate converters (such as Flash,SAR,Pipelined ADCs etc). The preference for Delta-Sigma A/D Converter is because of the reduced Quantization Noise in the band of interest due to OSR and the feedback loop.
