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Techniques for Fusion of Multimodal Images
Techniques for Fusion of Multimodal Images

... the other the MRI. When the slider is set in between these extremes an image that is a linear combination of the PET and MRI is shown. For example if the scroll bar is set to 76% PET image and 24% MRI image, the displayed image can be calculated by multiplying the brightness adjustment by the weight ...
Perception of mid frequency and high frequency
Perception of mid frequency and high frequency

Perception of mid frequency and high frequency intermodulation
Perception of mid frequency and high frequency intermodulation

... severely attenuate sound transmission above 4kHz. The slope of this curve would predict a transmission factor of –40dB at 30kHz ...
Considerations for Analog Input and Output
Considerations for Analog Input and Output

... 3.4 Sample rate and aliasing The “maximum sampling rate” indicates the fastest acquisition rate you can use with the device. For the PCI-6040E this is specified as 500 kS/s (kilosamples/sec) for a single channel and 250 kS/s for multiple channels. For the USB-6221 it is given as 250 kS/s for a singl ...
Accuracy versus Resolution - Scientific Devices Australia
Accuracy versus Resolution - Scientific Devices Australia

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... charge reservoirs. It is by now evident that even its lowfrequency power spectrum carries a wealth of information on the interactions and quantum correlations between the electrons [1,2] in both the charge reservoirs and the nanostructure itself. When the current I is made up from perfectly independ ...
HIGH PRECISION TORQUE MEASUREMENT SYSTEMS IN DYNAMIC AND STATIC APPLICATIONS
HIGH PRECISION TORQUE MEASUREMENT SYSTEMS IN DYNAMIC AND STATIC APPLICATIONS

... evaluated with a carrier frequency amplifier, passive torque transducers have far better reproducibility than active transducers with an integrated DC amplifier. A further examination of the influences in the frequency range provides the causes for this behaviour. The strain gage connection is a ser ...
Modeling and Analysis of Differential Signaling for Minimizing
Modeling and Analysis of Differential Signaling for Minimizing

A 0.5 - 5.5 GHz Distributed Low Noise Amplifier Errikos Lourandakis Fotis Plessas
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... 2. 2 Inductor & Parasitic Model - Final DA The next design step was to replace the ideal metal connections between the different circuit elements with microstrip line segments. The added components insert a more realistic behaviour for those conducting connections. These microstrip components are de ...
www.tektronix.com/tekselect
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... calibrated. You won’t make any compromises on signal fidelity and measurement accuracy by choosing a TekSelect reconditioned product. Rapid Delivery – TekSelect Instruments are typically available for immediate delivery so you can quickly get to work solving your measurement problems. Save on Extras ...
II. Design Procedure and calculation for LNA
II. Design Procedure and calculation for LNA

... Transistor selection is the first and most important step in an LNA design. Choosing a transistor for an RF amplifier is more complicate than choosing it for other application. It involves choosing one in the right package having an adequate current rating, with gain and noise figure capability that ...
Glossary of pro audio terms
Glossary of pro audio terms

... of an external magnetic field. In audio systems, this is usually manifested as a 60 Hz or 120 Hz hum or buzz (50 Hz or 100 Hz in 50 Hz systems). The source of this noise can be from a ground loop or from the signal wire coming too close to a strong magnetic field such as a transformer or high-curren ...
Digital-Pixel Focal Plane Array Technology
Digital-Pixel Focal Plane Array Technology

... FIGURE 1. A high-resolution, 250-megapixel, long-wave infrared (LWIR) image of the greater Boston area was collected at night using a 256 × 256 digital-pixel focal plane array operating using a digital time-delay and integrate (TDI) data collection mode. Insets include the Boston Financial District ...
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... IC amplifiers designed for low-noise operation generally use a simple differential-pair input stage with resistive loads. The noise of following stages is generally not significant, and the resistive loads make only a small noise contribution. However, circuits of this type (the 725 op amp is an exa ...
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LM1894 Dynamic Noise Reduction System DNR(RM)

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... The AD1866 is a high performance audio DAC specifically designed for portable and automotive digital audio applications. These market segments have technical requirements fundamentally different than those found in the high-end or home use market segment. Portable equipment must rely on components w ...
Feiglin3, 'Center
Feiglin3, 'Center

... By fusing the MRI and PET images a combined functional and morphological image is produced. We believe such an image will prove invaluable when detecting, grading the cancer, and assessing the need for surgical biopsy. While the fusion techniques are presented here in the context of MRI and PET brea ...
Active Pixel Sensor Arrays in 90/65nm CMOS
Active Pixel Sensor Arrays in 90/65nm CMOS

... active photosensor arrays and analog/mixed signal readout circuits. To compensate for the expected larger insufficiencies of the analog sensor array, advantage can be taken of the shrinking potential of further sub100nm CMOS technologies to implement image enhancement techniques by digital post proc ...
4.5.1 - Introduction Word Document
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... as far as speech, music and television are concerned, the original signals are in fact analogue, and that to make a loudspeaker reproduce the original sound then it must be provided with an analogue signal. This poses a simple question, if we start and end with analogue, where does the digital fit i ...
Digital Communications
Digital Communications

... as far as speech, music and television are concerned, the original signals are in fact analogue, and that to make a loudspeaker reproduce the original sound then it must be provided with an analogue signal. This poses a simple question, if we start and end with analogue, where does the digital fit i ...
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... • Motion artifact is caused by displacements between electrodes and skin due to patients’ slow movement. • It is simulated with an exponential function that decays with time. • Typically the duration is 0.16 second and the amplitude is almost as large as the peak-to-peak amplitude. • The phase is ra ...
2.5 Gb/s CMOS preamplifier for low-cost fiber-optic
2.5 Gb/s CMOS preamplifier for low-cost fiber-optic

... two electrostatic discharge (ESD) protection circuits. One is placed at the input and employs two diodes, D1 and D2, see Fig. 8. These input diodes are needed, especially in deep-submicron technologies where the prototype can be destroyed easily due to ESD.They are designed for this purpose followin ...
Image Restoration
Image Restoration

... Properties of Noise • When the Fourier spectrum of noise is constant, the noise is called a white noise. • This is similar to white light, which contains nearly all frequencies in the visible spectrum in equal quantities. • Fourier spectrum of a function containing all frequencies in equal proporti ...
Weigh Scale_Design
Weigh Scale_Design

... accept a differential input. The device should be a low noise ADC, with preferably some programmable gain so an external amplifier is not needed. It should also be able to except an external reference so that the load cell measurement can be accomplished ratiometrically. Performance and resolution s ...
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Dither



Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and video data, and is often one of the last stages of ""mastering"" audio to a CD.A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.
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