With a decreased matrix size, how does the spatial resolution of a digital image change?

A decreased matrix size results in fewer pixels being used to represent the same area of the image, which directly impacts spatial resolution. Spatial resolution is determined by the number and arrangement of pixels in the matrix—essentially, how fine the details can be rendered in the image. When the matrix size is reduced, each individual pixel becomes larger and can cover more area, leading to a loss of detail. Therefore, spatial resolution decreases because the ability to distinguish between small structures within the image diminishes. With larger pixels, the image may appear more coarse or blurred, which underscores the relationship between matrix size and spatial resolution in digital imaging.