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What is up sampling and down sampling?
Upsampling is the process of increasing the sampling rate of a signal. For instance, upsampling raster images such as photographs means increasing the resolution of the image.In signal processing, downsampling (or "subsampling") is the process of reducing the sampling rate of a signal. This is usually done to reduce the data rate or the size of the data.
What type of image retains its quality after resizing?
You can retain 100% quality only with vector graphic. When resizing pixels you can never retain 100% quality, some pixels will be added or deleted depend on type of resizing: downsampling (make image smaller) or upsampling (make image larger).
What are the release dates for Mitch Dorge Downsampling Perception - 2002?
Mitch Dorge Downsampling Perception - 2002 was released on: Canada: April 2002 USA: 11 August 2002 (Rhode Island International Film Festival)
What is difference decimation and downsampling?
Loosely speaking, "decimation" is the process of reducing the sampling rate. In practice, this usually implies lowpass-filtering a signal, then throwing away some of its samples. "Downsampling" is a more specific term which refers to just the process of throwing away samples, without the lowpass filtering operation. Throughout this FAQ, though, we'll just use the term "decimation" loosely, sometimes to mean "downsampling".
What is the process of inserting a zero called?
The process of inserting zero-valued samples in between original samples is called "upsampling," In digital signal processing, this process can also be called "zero-stuffing."
In algebra what is the process of inserting a zero called?
In digital signal processing, the practice of inserting zero-valued samples in between original samples is called "upsampling." This process can also be called "zero-stuffing."
What does Upconversion mean when referring to the Samsung DVD1080P9 HDMI DVD Player and why do I need that feature?
Upconversion, or upsampling, refers to the ability to take a low-quality impage and interpolate the pixels to create a better quality picture.
What causes low resolution?
Low resolution is usually caused by a poor compression rather than poor capture. Low resolution images have less physical pixels than a high resolution one. The stretching of the image is what causes them to look poor. This low number of pixels is usually the result of downsampling of the the image for email or file size purposes.
You Have installed C-Media Audio in your system Will an add on sound card help improving the audio quality dramatically from your computer or will it be a waste Please advice?
The sound quality is a matter of the audio hardware, the software driver is irrelevant. Any decent sound card or USB/Firewire audio interface is a significant improvement over the built-in audio on motherboards/laptops. Units that are capable of higher sample rates (i.e. 24-bit 96kHz) generally do a better job, but beware of "upsampling".Upsampling is when the digital signal is converted to a higher resolution signal before converting to analog, which only serves to work the digital-analog converters harder trying to reproduce ultrasonic frequencies that aren't in the recording and humans can't hear. It only seems like a valuable feature because the numbers are higher, like more horsepower in a car. It's total crap. Look up the papers Dan Lavry has written on the subject if you're curious to know why. It's a LONG story.
What is high definition photography?
High Definition Photography is an image codec that gives a high-dynamic-range image encoding while requiring only integer operations (with no divides) for both compression and decompression. It supports monochrome, RGB, CMYK and even n-channel color representation, using up to 16-bit unsigned integer representation, or up to 32-bit fixed point or floating point representation, and also supports RGBE Radiance. It may optionally include an embedded ICC color profile, to achieve consistent color representation across multiple devices. An alpha channel may be present for transparency, and Exif and XMP metadata formats are supported. The format allows decoding part of an image, without decoding the entire image. Full decoding is also unnecessary for certain operations such as cropping, downsampling, horizontal or vertical flips, or cardinal rotations. All color representations are transformed to an internal color representation. The transformation is entirely reversible, so, by using appropriate quantizers, both lossy and lossless compression can be achieved.
