0
Frequencies of an image: roughly speaking they are a measure
of the amount by which the gray value changes with the
distance.
High frequency components are characterized by large
changes in gray values over small distances. e.g. edges, noise.
Low frequency components are characterized by little
changes in gray values over small distances. e.g. backgrounds,
skin texture.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What causes sideband frequency?
If you subtract from the carrier frequency the frequency of the tone that modulates it, then filter out the carrier frequency, then you have a lower sideband frequency. If you add to the carrier frequency, filter out the carrier, then you have an upper sideband frequency.
What is frequency sensitivity?
the amount of frequency change in the carrier frequency per unit amplitude change in the message signal is the frequency sensitivity this term comes in the frequency moulation
What is frequency response?
Frequency response is the measure of the frequency of the output a device gives in response to a stimulus that it receives. The frequency response is a characteristic of the device.
What is high frequency tuned amplifier?
High frequency amplifier is a device which is tuned by high frequency. Tuned means the overlapping of generated frequency with that amplifier.
What is transition frequency of a transistor?
The transition frequency of a transistor is the frequency in which the transistor will no longer provide any amplification or gain output. The frequency is out of the transistors's range.
If a radio station is tuned at 1600 kHz what is the image frequency?
Assuming that the receiver uses a high-side local oscillator and an IF of 455 KHz, the image frequency is 910 KHz above. When tuned to 1600 KHz, the image frequency would be 2,510 KHz.
How to calculate image frequency?
f (image) = 2 * f (local oscillator) + fc ................. if f ( l.o ) > fc f (image) = 2* f (local oscillator) - fc
Which uses high-frequency sound waves to make an image of a developing fetus?
ultrasound
What is image processing?
Image Processing is area in which image is processed based on pixel (spatial) and frequency methods. In spatial method pixel value are subject to change For more details on image processing research visit http://imageprocessing.webs.com/
What are the peaks and valleys called on waves?
Crest and trough Image commons.wikimedia.org/wiki/File:Crest_trough.svg
If a 25 cm diameter image intensifier is sampled at 1000 x 1000 what is the Nyquist frequency?
5,000,000,000,000,000
What does frequency mean in music?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What frequency meaning in music?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
What does Frequency mean in music terms?
Each note has a specific frequency. The frequency is defined by the wavelengths produced by the sound. Just as FM radio stations each have specific frequencies (ie: 96.5), musical notes are the same. Think of an image of a wavelength. The more squiggles, the higher the frequency, and the higher the pitch.
How do you calculate an image frequency?
Let's take an example. Suppose that the intermediate frequency is 10,7 MHz (FM). The local oscillator works on 110,7 MHz. First case: You receive a signal of 100 MHz, the mixer will generate a frequency of 110,7 + 100 = 210,7 MHz, which will be rejected by the band-pass filter. The difference of the two frequencies is 110,7 - 100 = 10,7 MHz (desired one). Second case: You receive a signal of 121,4 MHz. The sum of that frequency and the local oscillator is 232,1 MHz, which will be rejected. The difference is 121,4 - 110,7 = 10,7 MHz. So the image frequency in that case is going to be 121,4 MHz.
What is photosensetivity?
Fitting caused by quick movement of light at a particular frequency. So this can be strobe lights or simply a flickering image on the T.V.
What imaging technique uses high-frequency sound waves to produce an image of the liver gallbladder or pancreas?
Ultrasound imagery (or sonography).
