Why spatial resolution is important?
Spatial resolution is important as it influences how sharply we see the objects. The key parameter is not just the number of pixels in each row or column of the display, but the angle subtended, by each of these pixels on the viewer’s retina.
How spatial resolution of a digitized image is different from brightness resolution in MATLAB?
A digital image is represented in the form of a 2D matrix of integers/floats, in which each element of the matrix represents pixel intensity. This intensity distribution of images depicted in the form of 2D matrices is called Spatial Domain. The intensity value depends on the bit-depth of the image. For example, if bit-depth is 8bit then pixel intensity can take values from 0 to 255.