Best way to resample a signal (image)?

1. What is resampling of an image?
2. Is resampling the same as upsampling?
3. How to resample audio in Matlab?

What is resampling of an image?

Resample. Changing the pixel dimensions of an image is called resampling. Resampling can degrade image quality. Downsampling decreases the number of pixels in the image, while upsampling increases the number.

Is resampling the same as upsampling?

Resampling involves changing the frequency of your time series observations. Two types of resampling are: Upsampling: Where you increase the frequency of the samples, such as from minutes to seconds. Downsampling: Where you decrease the frequency of the samples, such as from days to months.

How to resample audio in Matlab?

x2 = resample(y,2,1);