How to Downsample image in both Horizontal and Vertical Direction

Delilah asked: 2021-03-04 matlab , signal , signal processing

Learn how to downsample images in MATLAB, reducing resolution horizontally & vertically! Our tutorial provides a clear, concise guide with code examples. Downsa

Expert Answer

Kshitij Singh answered . 2025-07-30 15:09:32

For grayscale:

Xdown = X(1:2:end,1:2:end);

If it's RGB, keep the third dimension:

Xdown = X(1:2:end,1:2:end,:);

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