The code implements a factor of 2 liters of sampling and down-sampling the image function. Downsampling including the use of smoothing filter (with using the averaging filter) and does not use smoothing filter (without using the averaging filter) in two ways. L sample includes direct copying pixels (pixel replication method) and linear interpolation (bilinear interpolatoin method) in two ways. Downsampling and upsampling method There are four combinations of methods. After the program runs, gives a picture of the original image and the four results. Picture 1 original picture. Picture 2. Smoothing filter downsampling & Pixel copied directly liter sample. Picture 3. Smoothing filter downsampling & linear interpolation upsampling. Picture 4 without using a smoothing filter downsampling & Pixel copied directly liter sample. Picture 5. Downsampling does not use smoothing filter & linear interpolation upsampling.

DownUpSampling_ByFactor2.m

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